Antique & Vintage Gems for Sale in Online Auctions

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41.73 Ct Natural Bostwana Banded Agate Oval Cab: weight - 41.73 Ct / Size - 43.00 x 22.00 x 5.40 mm / Shape - Excellent Oval Cab / Origin - Brazil / Treatment - None

2026

41.73 Ct Natural Bostwana Banded Agate Oval Cab

Gems AuctionBangkok, TH

6.70 Ct Natural Orange Carnelian Cushion Cut: Weight - 6.70 Ct / Dimensions - 18.20 x 9.50 x 6.00 mm mm / Shape & Cut - Cushion Cut / Transparency - Semi - Transparent / Origin - Brazil

2026

6.70 Ct Natural Orange Carnelian Cushion Cut

Gems AuctionBangkok, TH

7.04 Ct Natural Green Amethyst Cushion Cut Pair: Weight - 7.04 Ct / Size - 10.80 x 8.80 x 5.40 mm / 2 Pc's / Shape - Cushion Cut / Color - Green / Clarity - VVS / Origin - Brazil / Treatment - Heated

2026

7.04 Ct Natural Green Amethyst Cushion Cut Pair

Gems AuctionBangkok, TH

6.65 Ct Natural Blue Tint Moonstone Oval Cab: Weight - 6.65 Ct / Size - 13.90 x 10.40 x 5.90 mm / Shape - Oval Cab / Clarity - Semi-Transparent / Origin - India / Treatment - None

2026

6.65 Ct Natural Blue Tint Moonstone Oval Cab

Gems AuctionBangkok, TH

3.01 Ct Natural Bicolor Ametrine Octagon Cut: Weight - 3.01 Ct / Dimensions - 11.10 x 7.80 x 5.30 mm / Shape - Octagon Cut / Color - Bicolor / Clarity - VVS / Origin -Brazil / Treatment - None

2026

3.01 Ct Natural Bicolor Ametrine Octagon Cut

Gems AuctionBangkok, TH

4.04 Ct Natural Sphene Cushion Cut: Weight - 4.04 Ct / Dimensions - 9.90 x 9.60 x 5.30 mm / Shape - Cushion Cut / Color - Deep Yellow / Clarity - VVS / Origin - Myanmar / Treatment - None

2026

4.04 Ct Natural Sphene Cushion Cut

Gems AuctionBangkok, TH

3.93 Ct Natural Axinite Oval Cut: Weight - 3.93 Ct / Dimensions - 12.60 x 8.00 x 5.50 mm / Shape - Oval Cut / Color - Brown / Clarity - SI / Origin - France / Treatment - None

2026

3.93 Ct Natural Axinite Oval Cut

Gems AuctionBangkok, TH

1.00 Ct IGI Certified Natural Green Emerald Oval Cut: Weight - 1.00 Ct / Size - 7.77 x 5.88 x 3.29 mm / Shape - Oval Cut / Color - Green / Clarity - SI / Origin - Zambia / Treatment - Colorless Oil

2026

1.00 Ct IGI Certified Natural Green Emerald Oval Cut

Gems AuctionBangkok, TH

9.92 Ct Natural Blue Sapphire Dumbbell Beads: Weight - 9.92 Ct / Dimensions - 8.1x7.0 - 8.8x7.4 mm / 3 Pc's / Shape - Dumbbell Beads / Clarity - SI / Origin - Sri Lanka / Treatment - Standard Heated

2026

9.92 Ct Natural Blue Sapphire Dumbbell Beads

Gems AuctionBangkok, TH

11.17 Ct Natural Multicolor Welo Opal Flash Fire Pear Cab: Weight - 11.17 Ct / Dimensions - 23.20 x 14.90 x 9.40 mm / Shape - Pear Cab / Color - Multicolor / Clarity - Translucent / Origin - Ethiopia / Treatment - None

2026

11.17 Ct Natural Multicolor Welo Opal Flash Fire Pear Cab

Gems AuctionBangkok, TH

1.23 Ct Natural Zambian Emerald Round Cut: Weight - 1.23 Ct / Size - 6.70 x 6.70 x 4.30 mm / Shape - Round Cut / Color - Green / Clarity - SI / Origin - Zambia / Treatment - Natural Emeralds are commonly enhanced by oil

2026

1.23 Ct Natural Zambian Emerald Round Cut

Gems AuctionBangkok, TH

45.87 Ct Natural Dragon Blood Jasper Quartz Oval Cab: weight - 45.87 Ct / Size - 35.00 x 21.00 x 6.60 mm / Shape - Excellent Oval Cab / Origin - Brazil / Treatment - None

2026

45.87 Ct Natural Dragon Blood Jasper Quartz Oval Cab

Gems AuctionBangkok, TH

1.51 Ct Natural Mexican Fire Opal Pear Drop: Weight - 1.51 Ct / Dimensions - 10.40 x 6.00 x 6.00 mm / Shape - Pear Drop / Color - Orange / Clarity - Transparent / Origin - Mexico / Comments - None

2026

1.51 Ct Natural Mexican Fire Opal Pear Drop

Gems AuctionBangkok, TH

2.94 Ct Natural Green Amethyst Cushion Cut Pair: Weight - 2.94 Ct / Dimensions - 7.10 x 7.00 x 5.20 mm / 2 Pc's / Shape - Cushion Cut / Color - Green / Clarity - VVS / Origin -Brazil / Treatment - Heated

2026

2.94 Ct Natural Green Amethyst Cushion Cut Pair

Gems AuctionBangkok, TH

2.84 Ct Natural Zambian Green Emerald Oval Cut Pair: Weight - 2.84 Ct / Dimensions - 7.80 x 6.10 x 4.30 mm / 2 Pc's / Shape - Oval Cut / Color - Green / Clarity - SI / Origin - Zambia / Treatment - Natural Emeralds are commonly enhanced by oil

2026

2.84 Ct Natural Zambian Green Emerald Oval Cut Pair

Gems AuctionBangkok, TH

27.87 Ct Natural Jasper Quartz Cushion Cab: weight - 27.87 Ct / Size - 30.00 x 17.30 x 5.60 mm / Shape - Excellent Cushion Cab / Origin - Brazil / Treatment - None

2026

27.87 Ct Natural Jasper Quartz Cushion Cab

Gems AuctionBangkok, TH

39.77 Ct Natural Tibetan Turquoise Fancy Cab: Weight - 39.77 Ct / Size - 39.00 x 23.10 x 4.90 mm / Good Color / Fancy Cabochon - Ready for Jewellery Setting / Origin - Arizona / Treatment - None

2026

39.77 Ct Natural Tibetan Turquoise Fancy Cab

Gems AuctionBangkok, TH

2.26 Ct Natural Black Flashing Fire Opal Oval Cut: Weight - 2.26 Ct / Dimensions - 12.30 x 8.40 x 5.00 mm / Shape - Oval Cut / Color - Black / Clarity - Translucent / Origin - Ethiopia / Treatment - Color Smoked

2026

2.26 Ct Natural Black Flashing Fire Opal Oval Cut

Gems AuctionBangkok, TH

7.24 Ct Natural Bluish Green Amblygonite Cushion Cut: Weight - 7.24 Ct / Dimensions - 11.40 x 11.10 x 8.40 mm / Shape - Cushion Cut / Color - Bluish Green / Clarity - SI / Origin - Brazil / Treatment - None

2026

7.24 Ct Natural Bluish Green Amblygonite Cushion Cut

Gems AuctionBangkok, TH

5.38 Ct Natural Zambian Green Emerald Oval Cut: Weight - 5.38 Ct / Dimensions - 13.00 x 11.50 x 7.50 mm / Shape - Oval Cut / Color - Green / Clarity - SI / Origin - Zambia / Comments - Color Coated

2026

5.38 Ct Natural Zambian Green Emerald Oval Cut

Gems AuctionBangkok, TH

21.44 Ct Natural Green Copper Turquoise Oval Cab Pair: Weight - 21.44 Ct / Dimensions - 20.00 x 12.20 x 5.70 mm / 2 Pc's / Good Color / Oval Cabochon - Ready for Jewellery Setting / Origin - Arizona / Treatment - None

2026

21.44 Ct Natural Green Copper Turquoise Oval Cab Pair

Gems AuctionBangkok, TH

1982 Mexico 1 Onza Silver Libertad SUPERB GEM BU: 1982 Mexico 1 Onza Silver Libertad SUPERB GEM BU

2026

1982 Mexico 1 Onza Silver Libertad SUPERB GEM BU

Gold Standard AuctionsDallas, TX

1934-D $5 Silver Certificate U-A Block Gem PMG CU66 EPQ: 1934-D $5 Silver Certificate U-A Block Gem PMG CU66 EPQ This is a $5 1934-D Silver Certificate, categorized under FR. 1654. This note showcases excellent paper quality, with bright and bold colors, an

2026

1934-D $5 Silver Certificate U-A Block Gem PMG CU66 EPQ

Mynt AuctionsNew York, NY

Late 19th-Century The Gem Cast Metal Sewing Companion with Original Trade Card, c. 1883: A Victorian-era sewing tool organizer and its corresponding promotional trade card. The organizer is constructed of cast white metal with a frame featuring pierced scrollwork and floral motifs. The un

2026

Late 19th-Century The Gem Cast Metal Sewing Companion with Original Trade Card, c. 1883

Ziebarth's GalleryMount Horeb, WI

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