Precious Stones Collection | Loose Gemstones | US Auction Brokers - U.S. Auction Brokers

Loose Gemstones

Rare Precious Stones Collection

Lot: 3904317
All-Natural high grade Loose Persian turquoise lot - 1217 grams 186 pieces Total Weight: 1217 grams No. of Pieces: 186 Shape: Oval Size: Mix Size Biggest Size for Sample: Weight: 31.1 gram (1 Pc) Measurement: Length: 35 mm X Width: 27 mm X Height: 16 mm Smallest Size for Sample: Weight: 11.7 gram (1 Pc) Measurement: Length: 12 mm X Width: 8 mm X Height: 5 mm Note: The price mentioned is for all pieces.
Current Bid:
Lot: 3903080
Shining natural blue sapphire! This faceted oval gem measures 6x8mm, a calibrated size for easy setting.  it weighs 1.27 cts.  Very pretty! Treatment: heat only.   No fillers, no diffusion treatment, not irradiated.
Current Bid:
Lot: 3905473
This high grade amethyst has a violet color palette that shifts fluidly, exhibiting strong lavenders and pinks with vivid saturation. The color dominance changes in different lighting, producing either rich royal purple or vibrant violet in its brilliant display. And all of this is enhanced by a beautifully polished superior luster and pristine VS clarity. This very beautiful gem was sourced from Bolivia, and measures 12.1mm x 10mm x 7mm. UNTREATED! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3903078
Fine, sparkling natural pink tourmaline.  weighing 2.64 cts., this step-cut faceted cushion gem measures 5.25x11.3mm.  Clean gemstone with lots of internal life. Treatment: none.
Current Bid:
Lot: 3905458
After these rubies arrive, you are going to have a hard decision to make. Do you have them set, or do these become the newest addition to your gem safe? We would recommend doing both. Lock them away while you take your time deciding on how you want them set. These rubies are worth it! Why? Because they exhibit amazing red hues with well blended pink undertones giving them vibrant hues that make these scarce gemstones a prime choice for collectors. They are well matched, with an average weight of .23 carats each and measure 3.5mm with semi-opaque bodies. And you get 15 of them! These gems are heated only, and have a Mohs hardness rating of 9 out of 10, making them perfect daily wear for generations to come. Sourced from Myanmar. (Formerly Burma) Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905424
This is a piece that you definitely need for your collection. Due to the scarcity of Winza rubies, the demand is growing everyday, and that's not us saying it, it’s directly from the Gemological Institute of America. (GIA) Now is the time to invest in Winza ruby, and this piece is a beautiful place to start. Weighing 7.98 carats, this large example shows a rich red hue with a well blended dark violet undertone that enriches its color, adding a silky texture to its display. And its semi-translucent body ensures not only full saturation, but amazing color stability. It is breath taking. This stunning ruby measures an impressive 11.9mm x 10.3mm x 7.2mm, and has a Mohs hardness rating of 9 out of 10 meaning that you and your ruby will be remembered for generations to come. UNTREATED!!! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905469
Ladies and gentlemen, this is a single vein cut set of premium pink Malaya garnets with radiant princess faceting. And if that weren't enough, they exhibit eye clean to VS clarity! They have preferred medium saturation with strong tones, and each piece was professionally polished to reveal their stunning superior lusters. These garnets sparkle and pop with enough brilliance to rival any sapphire, only they are much rarer. This beautifully matched set measures 2.5mm each, and is all natural with no treatments. Sourced from Tanzania. Don't miss your chance to own this 41 piece set of boutique grade gemstones! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905452
This 100 piece collection exhibits outstanding natural spring green hues with vivid saturation with some serious weight. The fully transparent bodies of these VS clarity tsavorites is complimented by their diamond lusters that twinkle off of every facet. Measuring 1.5mm to 1.9mm each, this substantial gemstone parcel is ready to set. Only 10 percent of the tsavorite mined in the world is above 1 carat, with only 2.5 percent being over 2 carats. Made famous by Tiffany and Co., this very beautiful gem is held in high regard by collectors and connoisseurs. Sourced from Tanzania. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905421
Clear some space in your gem and jewelry collection, because you are going to want to add this piece! This peridot measures an impressive 11.4mm x 8.5mm x 6.8mm, and its natural! No treatments! Just pure peridot! It has a classic cushion with crisp faceting that results in nonstop flashing, and every cut is covered with a glistening superior luster. Its color is both rich and vibrant with a spring green hue showing preferred medium saturation and bright tone. This glittering gemstone was sourced from Myanmar (formerly Burma). Don't miss this substantial collectors gem! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905463
Measuring an impressive 16.5mm x 10.5mm x 8mm, this exciting ruby is ready to set as soon as it arrives! Sourced from Myanmar, (formerly Burma) this ruby features classic pear faceting with crisp angles, and a gorgeous pinkish red hue that will standout in any setting or collection. The luster on this piece is exceptional, glistening off of every facet and enhancing its beautifully visual crystal structure. Heated only! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3903067
Succulent natural green tourmaline  - bigger is always better! This faceted oval gem measures 8.6x10.3mm and weighs 3.58 cts.  Fine cutting and fine color! Treatment: none.
Current Bid:
Lot: 3905427
Oh yeah, do we have a set for you! The royal blue hues of these sapphires is so rich it's almost velvety. And when you add their superior lusters, they look silky. So now you have a set of sapphires that is both silky and velvety with a classic color palette, the only question is, what are you going to do with them? Well, since they have a Mohs hardness rating of 9 out of 10, pretty much whatever you want to! And measuring 5x3mm each, you can put them pretty much any where. And you get 10 of them! Add a dramatic touch to your favorite settings, or use them as an excuse to create a new settings. Or, just go crazy and use them all at once for a pendant or cocktail ring! Once they arrive at your house, the sky is the limit. Or stick them in the safe for later. The only decision you need to make right now is deciding not to let them slip away. Sourced from Madagascar. Heated only! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905464
Ladies and gentlemen, this is an opportunity that you do not want to miss. Whether you are new to gem and jewelry collecting, or a seasoned pro, you are going to want this set in your collection. Presented here are 9 single vein cut bright platinum blue sapphires sourced from Ceylon, Sri Lanka. Their source location itself is known for premium gem production and sets a premium in the market, even before their color is considered. The light to medium saturation of these gems is bright and lively with strong tones. And each individual sapphire presents a premium polished luster that glitters off of every facet. These pieces measure 4x3mm, and each display VS to SI clarity. The standard treatment to achieve this premium grade color is usually diffusion, but these rare sapphires were heated only. No dyes, no fillers, just pure sapphire. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905476
This rare pink tourmaline set is an absolute must-see. Its captivating color is intense, showing a rich rose pink hue with preferred medium saturation and a strong tone. The luster of these pieces has an incredible polish, casting velvety shadows that outline its full bodied flashing, adding beautiful definition to their glittering light return. And their entire display is captured through VS to SI clarity. This 3 piece set measures 6x5mm to 6.5x 5mm and are ready to add some serious color to your gem and jewelry collection. Sourced from Mozambique. Untreated!!! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905466
Don't miss this one! Only 10% of gem grade tsavorite is above 1 carat, and this beauty fits that bill to a "T". Showing a vibrant green hue with preferred medium saturation, this approximate SI clarity gemstone is the perfect investment for setting. It is well cut and polished with pops of linear flashing on the inside, and a superior luster that sparkles across every facet on the outside. It measures 6.7mm x 4.6mm x 3.2mm, and is untreated! Sourced from Tanzania. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905468
You have got to see this sapphire for yourself. It is kind of unbelievable. The first thing you will notice is the size. It's huge! And it's got a low profile cut, which makes it look huge-er-er. (For those of you without children, that means really big.) And measuring an impressive 12mm x 12mm x 6mm, this one of a kind sapphire was cut to set, and with its lower profile, you won't have to worry about this gem snagging you pockets or your purse when reach into them, which is nice. But you know it's big, after all it weighs 8.69 carats, so lets get into the color! This sapphire shows an almost black resting color with shocks of shimmering silver from abundant deposits of proustite, a mineral that develops naturally with select rubies and sapphires over millions of years. But that's only half of the story. When you hold it to the light, it instantly changes to green and blue chevrons that highlight the growth of this gem. They are well defined, and you can count the thick bands like growth rings in a tree! Its like your own private geological record captured in sapphire crystal. You can go from rich elegance to whimsical color just by holding your hand up to the light. And it's heated only! No dyes or fillers in this gemstone, just pure sapphire. Sourced from Mozambique. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905459
The cut, color, and clarity of this gemstone is breathtaking. The clean look of this amethyst is amplified by its eye clarity and glistening luster, while its exquisite faceting creates electric flashing that runs up and down and around its body like a current. The color of this piece is vibrant, moving between lavender, pink, and purple depending on the lighting, with its full color palette mirrored in its flashing. Measuring a whopping 22mm x 22mm x 14mm it has substantial size with fantastic symmetry, and a Mohs hardness rating of 7 out of 10. This is an extremely fine example of boutique grade pure Bolivian amethyst. Untreated. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905474
Wow! This blue is something special. This is the kind of blue that you don't find very often in natural crystal form. This is the kind of blue that you show off to friends and other collectors. This is an aquamarine with intense Santa Maria blue coloring, and it is all natural. It is so natural, that you can see its crystal content and traces of minerals that developed with the aquamarine crystal. This is literally a pure aquamarine specimen with an emerald cut. Its body has fantastic symmetry measuring 11.5mm x 11.5mm x 7.3mm, and every crystal facet was beautifully polished to finish it with a superior luster. Sourced from Brazil. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905454
You should get this set now, because you might not see one like it again outside of a high end jewelry store. And let's be honest, by then they will be too expensive. What we have here is 30 top caliber Songean rubies with no treatments what so ever. No heating, no dying, and no fillers. Just pure ruby. But what makes them extraordinary is their color and clarity. These are single vein rubies presenting rich fire red hues with a touch of pink and amber in their undertones that comes through in cooler lighting, and the whole display is filled with glittering flashing. They are beyond top crystal caliber with very rare eye clean to VS clarity, and are beautifully faceted featuring crisp radiant princess cuts with fantastic symmetry. These well matched gems measure 2.5mm to 3mm each, and have a Mohs hardness rating of 9 out of 10. Don't miss these legacy caliber gemstones! Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3903062
Natural amethyst in an attractive "rose de France" color.  This collectable sector-cut gem weighs 20.63 cts. Treatment: none.
Current Bid:
Lot: 3903079
Succulent color shines in this natural tourmaline! A step-cut octagon, this beauty measures 6x9mm and weighs 2.06 cts. Fine cutting of fine, clean material.  Intense color. Treatment: none
Current Bid:
Lot: 3905465
This fantastic 40 piece collection of sapphires is heated only, no dyes, no fillers, just natural sapphire. They have deep denim blue hues, all wrapped in excellent lusters with VS to SI clarity. They are well matched in size, measuring 2.5mm to 2.7mm each and have a Mohs hardness rating of 9 out of 10, making them perfect for setting. They were sourced from Madagascar, and are stunning examples of pure sapphire. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905455
This 8 piece collection of sapphires exhibits a mix of rich denim blue and blue green hues with swirling saturation, and are well matched in size measuring 5x3mm with an average weight of .34 carats each each and eye clean to VS clarity. They were heated only, with no dyes or fillers, and have a Mohs hardness rating of 9 out of 10. These gems were sourced from Australia, and present glistening superior lusters. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905422
How adorable is this? Like siblings playing, you have one iguana hiding from the other one. But say what you want about the subject matter, the fact is, this is over 132 carats of pure black sapphire! And its untreated! But this isn't any ordinary black, this is charcoal black, so you have nuances of grey and brown that give it a bi-color appearance when its turned in the light. And the luster of this piece? The luster makes it look wet! It measures an impressive 37.5mm x 31.5mm x 16.8mm, and is all natural with no treatments. Sourced from Tanzania. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid:
Lot: 3905470
This glittering set of topaz solitaires glow with open sky blue hues and glittering flashing through eye to VS clarity. They have great size measuring 8mm with an average weight of 2.31 carats each, making them big enough for individual solitaire setting, impressive earrings, or a substantial piece of your own design. These are natural topaz sourced from Brazil, and were radiated for permanent color enhancement, which is the preferred treatment for blue topaz. Gems come with a complimentary gem jar for display and protection, size permitting. All treatments are disclosed*, and all weights and sizes are approximate. Listed gemstones are greatly magnified, and minor details that present themselves in the photo may not be visible with the naked eye. There may be slight color differences due to individual monitor settings and capabilities. *Except for topaz. As irradiation is the standard treatment for this gem type, they should be assumed to be as such, unless stated otherwise in the description.
Current Bid: