Tourmaline Gems

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45ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 92BL: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

45ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 92BL

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

168.82ct Natural Peruvian Chrysocolla Polished Slab Rough, 67EK: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 54x37x14mm elongated form, translucent mineral layers hold

2026

168.82ct Natural Peruvian Chrysocolla Polished Slab Rough, 67EK

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

110ct Natural Peruvian Chrysocolla Polished Slab Rough, 70AR: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 36x28x19mm elongated form, translucent mineral layers hold

2026

110ct Natural Peruvian Chrysocolla Polished Slab Rough, 70AR

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

27ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 31BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

27ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 31BM

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

28ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 20BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

28ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 20BM

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

3.82ct Natural African Royal Blue Sapphire Parcel Loose Gemstones, 42BE: This matched parcel of polished sapphires carries rich saturated royal blue body tone, with natural mineral inclusions distributed throughout each crystal interior, featuring calibrated dimensions up

2026

3.82ct Natural African Royal Blue Sapphire Parcel Loose Gemstones, 42BE

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

154.35ct Natural Peruvian Chrysocolla Polished Slab Rough, 65EK: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 60x34x8mm elongated form, translucent mineral layers hold s

2026

154.35ct Natural Peruvian Chrysocolla Polished Slab Rough, 65EK

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

19ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 70BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

19ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 70BM

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

1.12ct Natural Australian Parti Sapphire Faceted Loose Gemstone, 64BA: This expertly faceted Australian parti sapphire features blended multi-tonal green-yellow internal saturation with tiny scattered microscopic mineral specks suspended within its transparent crystallin

2026

1.12ct Natural Australian Parti Sapphire Faceted Loose Gemstone, 64BA

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

36.36ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 39FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

36.36ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 39FC

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

7.14ct Natural Australian Multitone Sapphire Loose Gemstone Parcel Lot, 49EV: This varied parcel of Australian sapphires presents a striking spectrum of deep forest green, vivid teal-green, rich royal blue, and soft pale blue tones. Each oval-faceted gem delivers crisp light re

2026

7.14ct Natural Australian Multitone Sapphire Loose Gemstone Parcel Lot, 49EV

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

3.64ct Natural African Royal Blue Sapphire Parcel Loose Gemstones, 40BE: This matched parcel of polished sapphires carries rich saturated royal blue body tone, with natural mineral inclusions distributed throughout each crystal interior, featuring calibrated dimensions up

2026

3.64ct Natural African Royal Blue Sapphire Parcel Loose Gemstones, 40BE

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

50.80ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 37FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

50.80ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 37FC

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

0.13ct Lab-Grown White Round Brilliant HPHT Diamond Loose Gemstone, 83BE: This precision-cut HPHT lab-grown diamond exhibits brilliant colourless transparency, dotted with subtle microscopic growth features within its crystal structure, measured at calibrated dimensions of

2026

0.13ct Lab-Grown White Round Brilliant HPHT Diamond Loose Gemstone, 83BE

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

98.64ct Natural Peruvian Chrysocolla Polished Slab Rough, 59EK: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 46x27x6mm elongated form, translucent mineral layers hold s

2026

98.64ct Natural Peruvian Chrysocolla Polished Slab Rough, 59EK

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

35ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 100BL: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

35ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 100BL

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

12.46ct Natural Peruvian Chrysocolla Cabochon Loose Gemstone, 99EP: This natural chrysocolla cabochon from Peru displays beautiful blended mineral patterns across its smoothly polished surface. Dimensions measure 15x12x6mm, this wellfinished cabochon works wonderfully

2026

12.46ct Natural Peruvian Chrysocolla Cabochon Loose Gemstone, 99EP

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

27.39ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 79FC: This natural corundum rough is an unheated purplish blue sapphire sourced from Sri Lankan alluvial gem deposits, featuring an irregular natural native form with residual pale yellow-brown mineral matr

2026

27.39ct Natural Unheated Sri Lankan Purplish Blue Sapphire Rough, 79FC

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

228.56ct Natural Peruvian Chrysocolla Polished Slab Rough, 56EK: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 56x29x26mm elongated form, translucent mineral layers hold

2026

228.56ct Natural Peruvian Chrysocolla Polished Slab Rough, 56EK

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

43ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 29BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

43ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 29BM

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

13.31ct Natural Peruvian Chrysocolla Cabochon Loose Gemstone, 63ER: This natural chrysocolla cabochon from Peru displays beautiful blended mineral patterns across its smoothly polished surface. Dimensions measure 16x14x6mm, this wellfinished cabochon works wonderfully

2026

13.31ct Natural Peruvian Chrysocolla Cabochon Loose Gemstone, 63ER

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

34ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 10BM: This smoothly polished cabochon of natural phantom quartz preserves delicate layered phantom crystal formations enclosed inside transparent quartz host. The domed polished surface offers unobstructed

2026

34ct Natural Brazilian Phantom Quartz Oval Cabochon Loose Gemstone, 10BM

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

112.30ct Natural Peruvian Chrysocolla Polished Slab Rough, 61EK: This partial-polished chrysocolla slab features blended mineral matrix with smooth refined face and unaltered natural rugged edge across its 43x29x11mm elongated form, translucent mineral layers hold

2026

112.30ct Natural Peruvian Chrysocolla Polished Slab Rough, 61EK

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

17.16 Carats Natural Ceylon Soft Milky White Moonstone Loose Gemstone, 75FE: This natural Ceylon moonstone carries a smooth milky white base with subtle gentle adularescent glow across its polished surface, measured at 18.3x13.6x9.7mm, showcasing clean even transparency with m

2026

17.16 Carats Natural Ceylon Soft Milky White Moonstone Loose Gemstone, 75FE

Sathorn, Bangkok

ThousandPlanet

4.5

(310)

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Gems Auctions

UNIQUE BERTONI HANDCRAFTED DESIGNER BRANCH RING WITH 18K YELLOW GOLD & ONYX with diamonds

Large Lemon Quartz

Estate Opal and Sapphire 14k yellow flower ring

Jewels & Gems, Then & Now

Bertoni Gallery LLC

Starts on:

Warwick, NY, US

14KY&W Gold Tanzanite and Diamond Swirled Pendant

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Ruby and Diamond Marquise-Cut Doorknocker Earrings

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Bidfair Fine Jewelry

Ends from:

Vero Beach, FL, US

Auction Cover

Auction Cover

Auction Cover

Silk Road Gems: Asian Art Across Time

harbor auction inc

Starts on:

Eastvale, CA, US

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