Antique & Vintage Gems for Sale in Online Auctions

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Sterling Silver CZ Openwork Heart Link Tennis Bracelet: Clasp does not lock, Some CZ gems missing, Measures 7 in length

2026

Sterling Silver CZ Openwork Heart Link Tennis Bracelet

Matthew Bullock AuctioneersOttawa, IL

Ideal Loose Diamond - ROUND 1.27ct D VVS1: Ideal Loose Diamond - ROUND 1.27ct D VVS1 Source: This is a real non-mined Diamond that has been grown in a lab Shape: ROUND Carats: 1.27 Color: D Clarity: VVS1 Certification: IGI Video:

2026

Ideal Loose Diamond - ROUND 1.27ct D VVS1

Mynt AuctionsNew York, NY

7.00 Carat Natural Ceylon Purple Sapphire Brilliant Mixed Cushion Cut EGL Certified: An investment-grade gemstone featuring a vibrant purple hue, rectangular-rounded curved edges, and a mix of brilliant and step facets to maximize light return.

2026

7.00 Carat Natural Ceylon Purple Sapphire Brilliant Mixed Cushion Cut EGL Certified

California GemstonesOceanside, CA

7.55 Carat ---- Natural Ceylon Blue Sapphire ---- Emerald Step Cut - GGI Certified: A 7.55 carat natural Ceylon blue sapphire with an emerald step cut is a rare, earth-mined gemstone from Sri Lanka featuring rectangular parallel facets and high transparency.

2026

7.55 Carat ---- Natural Ceylon Blue Sapphire ---- Emerald Step Cut - GGI Certified

California GemstonesOceanside, CA

5.15 Carat Natural Ceylon Blue Sapphire Brilliant Cushion Cut European Gem Lab Certified: A premium, collector-quality gemstone known for its exceptional size, prestigious origin, and optical brilliance. A royal blue cornflower blue shade achieves the highest market value.

2026

5.15 Carat Natural Ceylon Blue Sapphire Brilliant Cushion Cut European Gem Lab Certified

California GemstonesOceanside, CA

Natural Zircon Crystal Mineral Specimen -13.68 Grams - 31X22X18 mm: Natural Zircon Crystal Mineral Specimen -13.68 Grams - 31X22X18 mmShipping Rate: 23$ .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on mul

2026

Natural Zircon Crystal Mineral Specimen -13.68 Grams - 31X22X18 mm

Fantasy JewelryMuscat, AE

Quartz Crystals Undamaged Mineral Specimen - 68.67 Grams - 63X54X23 mm: Quartz Crystals Undamaged Mineral Specimen - 68.67 Grams - 63X54X23 mmShipping Rate: 23$ .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on

2026

Quartz Crystals Undamaged Mineral Specimen - 68.67 Grams - 63X54X23 mm

Fantasy JewelryMuscat, AE

Quartz Crystals Undamaged Mineral Specimen - 122.46 Grams - 76X52X42 mm: Quartz Crystals Undamaged Mineral Specimen - 122.46 Grams - 76X52X42 mmShipping Rate: 23$ shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on

2026

Quartz Crystals Undamaged Mineral Specimen - 122.46 Grams - 76X52X42 mm

Fantasy JewelryMuscat, AE

18.3 Grams Beautiful Brucite Crystal - 40X30X20 mm: 18.3 Grams Beautiful Brucite Crystal - 40X30X20 mmShipping Rate: 23$ .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple items purc

2026

18.3 Grams Beautiful Brucite Crystal - 40X30X20 mm

Fantasy JewelryMuscat, AE

47 Grams Natural Aragonite Crystal - 40X30X20 mm: 47 Grams Natural Aragonite Crystal - 40X30X20 mm Shipping Rate: 23$ .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple items purch

2026

47 Grams Natural Aragonite Crystal - 40X30X20 mm

Fantasy JewelryMuscat, AE

2026

Antique 1880s Swiss Ladies Fob Watch, "The Gem" Engraved Case, Cylinder Movement

Sphere Auctions LLCSun Prarie, WI

6.98 Ct Natural London Blue Topaz Cushion Cut Pair: Weight - 6.98 Ct / Size - 8.30 x 8.30 x 5.80 mm / 2 Pc's / Shape - Cushion Cut / Color - Blue / Clarity - VVS / Origin - Brazil / Treatment - Irradiated

2026

6.98 Ct Natural London Blue Topaz Cushion Cut Pair

Gems AuctionBangkok, TH

6.98 Ct Natural Black Onyx Flower Carving: Weight - 6.98 Ct / Size - 14.00 x 14.00 x 6.10 mm / Shape - Flower Carving / Clarity - Opaque / Origin - Brazil / Treatment - None

2026

6.98 Ct Natural Black Onyx Flower Carving

Gems AuctionBangkok, TH

3.80 Ct Natural Aquamarine Octagon Cut: Weight - 3.80 Ct / Dimensions - 10.80 x 8.20 x 6.10 mm / Shape - Oval Cut / Clarity - SI / Origin -India / Treatment - None

2026

3.80 Ct Natural Aquamarine Octagon Cut

Gems AuctionBangkok, TH

53.31 Ct Natural Jasper Quartz OVal Cab: weight - 53.31 Ct / Dimensions - 40.00 x 25.00 x 6.90 mm / Shape - Excellent OVal Cab / Origin - Brazil / Treatment - None

2026

53.31 Ct Natural Jasper Quartz OVal Cab

Gems AuctionBangkok, TH

19.29 Ct Natural Blue Jade Round Cut Beads: weight - 19.29 Ct / Dimensions - 3.00 - 3.20 mm / 107 Pc's / 12.5" inches / Shape - Excellent Round Cut Beads / Origin - Brazil / Treatment - None

2026

19.29 Ct Natural Blue Jade Round Cut Beads

Gems AuctionBangkok, TH

5.07 Ct Natural Pinkish Red Ruby Heart Cut: Weight - 5.07 Ct / Size - 10.30 x 10.00 x 5.50 mm / Shape - Heart Cut / Color - Red / Clarity - SI / Origin - Mozambique / Treatment - Heated With Glass Filling

2026

5.07 Ct Natural Pinkish Red Ruby Heart Cut

Gems AuctionBangkok, TH

1.20 Ct Natural Spinel Cushion Cut: Weight - 1.20 Ct / Size - 7.40 x 5.10 x 4.00 mm / Shape - Cushion Cut / Color - Deep Blue / Clarity - VVS / Origin - Mozambique / Treatment - None

2026

1.20 Ct Natural Spinel Cushion Cut

Gems AuctionBangkok, TH

6.44 Ct Natural Pink Kunzite Octagon Cut: Weight - 6.44 Ct / Dimensions - 10.90 x 8.60 x 7.70 mm / Shape - Octagon Cut / Color - Pink / Clarity - SI / Origin - Afghanisthan / Treatment - None

2026

6.44 Ct Natural Pink Kunzite Octagon Cut

Gems AuctionBangkok, TH

31.93 Ct Natural Rosetta Jasper Quartz Oval Cab: weight - 31.93 Ct / Size - 36.00 x 22.00 x 5.50 mm / Shape - Excellent Oval Cab / Origin - Brazil / Treatment - None

2026

31.93 Ct Natural Rosetta Jasper Quartz Oval Cab

Gems AuctionBangkok, TH

7.12 Ct Natural Lavender Amethyst Hexagon Cut: Weight - 7.12 Ct / Size - 13.00 x 13.00 x 7.70 mm / Shape - Hexagon Cut / Color - Lavender / Clarity - VVS / Origin -Brazil / Treatment - Heated

2026

7.12 Ct Natural Lavender Amethyst Hexagon Cut

Gems AuctionBangkok, TH

19.10 Ct Natural Rutile Quartz Oval Cab: Weight - 19.10 Ct / Size - 24.00 x 17.50 x 6.30 mm / Shape - Oval Cab / Clarity - Transaprent / Origin - Norway / Treatment - None

2026

19.10 Ct Natural Rutile Quartz Oval Cab

Gems AuctionBangkok, TH

11.89 Ct Natural Larimar Round Beads: Weight - 11.89 Ct / Dimensions - 6.20 - 7.60 mm / 8 PC's / Shape & Cut - Round Beads / Transparency - Semi - Opaque / Origin - Brazil

2026

11.89 Ct Natural Larimar Round Beads

Gems AuctionBangkok, TH

15.80 Ct Natural Rutile Quartz Oval Cab: Weight - 15.80 Ct / Dimensions - 16.80 x 13.80 x 10.00 mm / Shape & Cut - Oval Cab / Transparency - Transaprent / Origin - India / Comments - None

2026

15.80 Ct Natural Rutile Quartz Oval Cab

Gems AuctionBangkok, TH

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