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

Loose Gemstones

Rare Precious Stones Collection

Lot: 3890817
Don’t miss this simply amazing gem. Sourced from the Republic of Guinea, this rare example has a velvety hues that move between different shades of violet and pink, all combined with a glistening luster that is simply mesmerizing. It is rich and decadent with a semi-opaque body ensuring that it has a strong color palette, while still giving it a glowing appearance in sunlight. It measures 14mm x 12mm x 5.5mm, making it a perfect candidate for setting, and has a Mohs hardness rating of 9 out of 10, ensuring that it is both durable enough to wear daily, and to pass on for generations to come. 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: 3890814
Do you have a Nigerian emerald yet? We're going to guess that you don't. Zambian, yes. Colombian? Yes. Nigerian? Chances are you didn't even know you could get gem grade emeralds there. And their electric green color and scarcity make them fantastic investments. This example exhibits swirling color saturation with a vivid tone and mint green hue that glows through approximate SI1 clarity. And to top it off, it is filled with sparkling flashing! When is the last time you saw an emerald sparkle? This piece is cut with a modified oval shape, and measures 7mm x 6mm x 5mm. Oiled 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: 3890829
Ladies and gentlemen, presented here are 30 individual sapphires showing matched pink hues with vibrant color and preferred medium saturation. And strong flashing, we don't want to forget that part. Oh, and VS to SI clarity, that part is good too. And did we mention the superior lusters? Because they each have those as well. Come to think of it, this set of sapphires is absolutely stunning. They measure between 3x2mm and 4x2mm each, and have a Mohs hardness rating of 9 out of 10 so they are perfect for setting. You should definitely get these. Sourced from Madagascar. 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: 3888585
Radiant natural diamond - natural beauty at its best. This brilliant-cut round gem measures 4.4mm and weighs 34 points.  Clarity grade: I1. Color grade: J This diamond has been mined and processed in compliance with United Nations resolutions prohibiting trade in conflict stones Further, it is not irradiated and contains no fillers.
Current Bid:
Lot: 3890839
Ladies and Gentlemen, lets get ready to SPARKLE! What we have here is a pristine VS clarity gemstone cut from pure Bolivian amethyst. No treatments here folks, just natural beauty. Its color is both soft and bright with a violet hue, and a pronounced lavender undertone that really makes it pop. And speaking of popping, look at the sparkle in this piece! Its clean, open top is surrounded by glittering flashing that explodes in both pink and lavender while its superior luster twinkles off of every cut. It measures a whopping 19.2mm x 14.5mm x 10.7mm. Do you know what that means? It's time to assert your gemstone dominance with this large amethyst! 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: 3890816
This is such a great piece. Its emerald cut is covered with tight faceting from top to bottom giving it unparalleled light return, framing its table in brilliant non-stop flashing, even in low light. And its pristine VS clarity ensures that you won't miss a single glittering moment. Its hue is a gorgeous platinum blue color with light saturation accented by a premium polished luster. This creates the perfect background for its luster to sparkle off of every facet. It measures an impressive 9.3mm x 9.2mm x 6.5mm, and is untreated. Sourced from Africa. 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: 3888582
Natural 6-rayed star sapphire cabochon - love to watch the star dance with the light! This oval natural sapphire cabochon measures 8.2x9.6mm and weighs 3.55 cts.  Nicely defined star. Treatment: none.  No heat, no fillers, no diffusion treatment, not irradiated.
Current Bid:
Lot: 3890815
Don't settle for a boring one color solitaire, go for the gusto with a gemstone as unique as you are! Presented here is just over one full carat of pure sapphire center stone sourced from Madagascar that puts the swirl in swirling saturation. You have rich sapphire blues and smoky whites literally swirling around each other through crisp SI clarity. All set under a sparkling superior luster. This sapphire measures 5.5mm x 3.6mm, so it is perfect for setting. And with its Mohs hardness rating of 9 out of 10, it's perfect for daily wear, too. Don't miss this one of a kind sapphire! 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: 3890803
This is an amazing set of diamonds! And unlike other lab created diamonds, these are cognac colored giving this pair an authentic look and character that is missing in most of the lab created diamonds on the market. If you weren't told these were a lab created diamond, you wouldn't know. While everyone else is looking to create a flawlessly colored gemstone, these diamonds were created to look real, and they do. The flashing of these pieces fills them with light and movement, and just like the real thing, they have diamond grade lusters that graces every tightly cut facet. And measuring 5.2mm x 3.1mm this boutique grade set of gemstones is perfect for setting.
Current Bid:
Lot: 3890916
GIA Certified 3.37 CT Sapphire
Current Bid:
Lot: 3890819
You're not going to want to miss this set. These rubies are a touch brighter than most pigeons blood examples. The rich red hue of these 8 rubies is enhanced by a well blended violet undertone making these scarce gemstones a prime choice for collectors. But unlike most sets, these rubies have a stunning touch of pink in there undertones as well, lifting their color and adding a touch of vibrancy to their color palettes. They are well matched in size, with an average weight of .27 carats each and measure 4.5x3.5mm with semi-translucent bodies. 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: 3890853
7.5 Ct Emerald Green Radiant Emerald Cut Moissanite. This Moissanite measures 11 x 12.8 mm and has a vivid dark emerald greenish blue coloring with a fine even hue. With a refractive index of 2.65-2.69, this Moissanite exhibits more fire and brilliance than a natural diamond thanks to a dispersion that is 2.4 times higher than a natural diamond. With a 9.25 Mohs measurement of hardness this Moissanite will test positive for a diamond on almost any diamond tester.
Current Bid:
Lot: 3890828
Let's take a moment ladies and gentlemen to reflect on the things in life that make us happy. Now, imagine that reflection while looking at this massive sapphire! See? Happier already. Presented here is a truly significant gemstone. You have incredible size and weight, measuring 12.9mm x 10.1mm x 7.1mm and weighing 7.83 carats, but you also have a silky blue black color palette that is just as much at home in a slinky black dress as it is in jeans and a t-shirt. Whatever your mood, this sapphire is here for you, and with a Mohs hardness rating of 9 out of 10, you can wear it where ever your mood takes you. The classic oval cut of this sapphire glistens under its premium polished superior luster giving each facet a glittering appearance, and creating a kaleidoscope effect across its entire surface. All the while its fully opaque body ensures beautiful color stability. Sourced from Mozambique. 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: 3891319
CERTIFIED NATURAL VIOLETISH BLUE 2.51 CARATS TANZANITE. IT IS OVAL MIXED SHAPE. CERTIFIED BY GWLAB. CERTIFICATE #231104681026. CAN BE VERIFIED AT WWW.GWLAB.COM
Current Bid:
Lot: 3890841
WOW! Look at that color! Ladies and gentlemen, presented here is a set of true cornflower blue sapphires sourced from Ceylon, Sri Lanka. Whether you have them set or not, you are going to want these for your collection. They exhibit strong tones with preferred medium saturation, pops of glittering flashing, and superior lusters that sparkle off of each facet. And all of this color and flashing is captured through SI clarity. They measure from 6x4mm each giving you plenty of setting options, and all have a Mohs hardness rating of 9 out of 10. 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: 3891311
CERTIFIED NATURAL RED RUBY . IT IS 4.91 CARATS OVAL CUT. COLOR IS RED AND CLARITY IS CLEAN. CERTIFIED BY CLC, CERTIFICATE ֳG94420391. CAN BE VERIFIED AT WWW.GLC-LAB.COM. ALL INFORMATION IS ON THE CERTIFICATE.
Current Bid:
Lot: 3890810
This peridot is collectable for so many reasons. First of all, it was sourced from Vietnam. Do you have any Vietnamese peridot in your gem and jewelry collection? Probably not. Second, it has amazing size! Weighing well over 13 carats and measuring 15.5mm x 11.23mm x 9.37mm, this peridot will definitely not get lost in a crowd. And third is the color. Wow! The spring green hue of this peridot is bright and vibrant, showing preferred medium saturation with a strong tone, which is reflected in its smoldering flashing. And don't forget about the rutile needles! These are concentrated on one side and add a touch of uniqueness to the whole display. 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: 3890848
This 4.5 Cwt. Emerald Green Moissanite is an Asscher cut measuring approx. 8.9 x 8.9 mm. With a refractive index of 2.65-2.69, this lovely Moissanite exhibits more brilliance than a diamond thanks to a dispersion that is 2.4 times higher than a natural diamond. With a 9.25 Mohs measurement of hardness, it will test positive for a diamond on almost any diamond tester.
Current Bid:
Lot: 3890812
This is an eye catching opal! Its tangerine color bright with a vibrant tone that in itself is striking, but then you add surprising pops of electric orange flashing, and you have an opal that stand out in any setting. Its emerald cut shows fantastic symmetry with VS clarity, and it is finished with a glistening liquid luster that gives it the appearance of being wet. Since opals have less density than other gems, they have an incredible size to weight ratio, so your 3.65 carat weight translates to 12.7mm x 8.7mm x 5.9mm! Talk about more bang for your buck! And if all of that wasn't enough, this collectors fire opal is all natural with no treatments. Whether you wear it or display it, the most important thing is to own it. Sourced from Mexico. 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: 3890842
Buy them now ladies and gentleman, because this type of ruby is going fast! The popularity of Madagascar rubies grows daily as people grow to love the standout colors of these pieces. The unique violet red color of this ruby has incredible stability in different lighting thanks to its opaque body. This gorgeous example measures 12.2mm x 9.1mm x 7.3mm, and has a Mohs hardness rating of 9 out of 10 ensuring that its beauty will be enjoyed for generations to come. 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: 3890917
GIA Certified 4.68 CT Sapphire
Current Bid:
Lot: 3890820
It's time to dust off your collectors hat and prepare to bid! This eye catching sapphire shows a unique color palette of rich red orange with a dramatic stroke of violet swirling through its body. And it's all natural! The cut of this piece has fantastic symmetry with wide faceting that creates the perfect background for its superior luster to sparkle against. And it has impressive size measuring 11.5mm x 11.5.5mm x 6.2mm with a semi-translucent body that filters the light giving it a glowing effect. Sourced from Tanzania. 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: 3890806
This 12 piece set is for the most discerning gem and jewelry collectors. The red amber hue of this single vein collection is rare even among different gem types, with a color palette that shifts dominance between rich reds and fall oranges. Cut from premium VS citrine crystal with gorgeous oval cut faceting, these 7x5mm gems erupt in dazzling flashing that is a mix of their well blended matched hues. You will be amazed at the color of these gems. Sourced from Brazil. 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: 3888584
Brilliant color shines in this natural opal cabochon! This oval cabochon measures 11.2x14.4mm and weighs 4.31 cts.  Fine color! Treatment: none
Current Bid:
Lot: 3890809
This 24 piece collection of sapphires exhibits a mix of rich blue and green hues with round and oval cuts, and measure from 3.5x3mm to 4.5x3.5mm with an average weight of .28 carats each each with SI 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 Bang Kacha, Thailand, 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: 3890915
GIA Certified 2.07 CT Spinel
Current Bid:
Lot: 3890808
Introducing a magnificent 134.40ct Grandidierite lizard carving, a rare and extraordinary piece that is sure to captivate collectors and gemstone enthusiasts alike. Carved from one of the world's most elusive and precious gemstones, this Grandidierite sculpture showcases a stunning range of moss green to sea-green to blue hues, with liquid luster that allows light to dance across its surface. The skilled craftsmanship is evident in the intricate detailing of the lizard's posture and expression, bringing a lifelike quality to this unique creation. Sourced from Madagascar, where Grandidierite was first discovered, this exceptional carving not only embodies the beauty and rarity of the gemstone but also serves as a one-of-a-kind art piece that will elevate any collection to new heights. It measures an impressive 40.5mm x 29.5mm x 26.5mm and is untreated!!!
Current Bid: