Antique & Vintage Gems for Sale in Online Auctions

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22.89ct Natural Mauritania Ruby Rough (Unheated), 84XA: This unheated Mauritania ruby rough is a striking natural crystal specimen, featuring a rich, saturated magenta hue with subtle purple undertones that deepen toward the core. The rough's rugged, natur

2026

22.89ct Natural Mauritania Ruby Rough (Unheated), 84XA

ThousandPlanetSathorn, Bangkok

An Australian Koroit Yowah Boulder Opal Rough Lot, 46.85g, 48ZH: A parcel of rough Koroit Yowah boulder opal, with individual pieces ranging from 3-4 cm in size, totaling 46.85 grams. The specimens are characterized by their ironstone host rock matrix, which displa

2026

An Australian Koroit Yowah Boulder Opal Rough Lot, 46.85g, 48ZH

ThousandPlanetSathorn, Bangkok

28.33ct Natural Mauritania Ruby Rough (Unheated), 75XA: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

2026

28.33ct Natural Mauritania Ruby Rough (Unheated), 75XA

ThousandPlanetSathorn, Bangkok

35.90 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ96: This striking Winton boulder opal rough is a dramatic example of Australian boulder opal's raw beauty. The polished face reveals a broad, vibrant sheet of opal glowing with intense, saturated hues of

2026

35.90 Carats Winton Boulder Opal Rough Specimen - Natural Queensland Origin, LZ96

ThousandPlanetSathorn, Bangkok

24.78ct Natural Mauritania Ruby Rough (Unheated), 57XA: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rough, unpolished su

2026

24.78ct Natural Mauritania Ruby Rough (Unheated), 57XA

ThousandPlanetSathorn, Bangkok

30.75ct Natural Mauritania Ruby Rough (Unheated), 85AM: This unheated Mauritania ruby rough is a striking natural crystal specimen, featuring a rich, saturated magenta hue with subtle purple undertones that deepen toward the core. The rough's rugged, natur

2026

30.75ct Natural Mauritania Ruby Rough (Unheated), 85AM

ThousandPlanetSathorn, Bangkok

Natural Australian Lightning Ridge Opal Rough, 60g, 86WS: This collection of raw opal rough hails from Australia's legendary Lightning Ridge, showcasing the region's iconic play-of-color potential. The stones exhibit a range of natural hues, from milky white

2026

Natural Australian Lightning Ridge Opal Rough, 60g, 86WS

ThousandPlanetSathorn, Bangkok

Natural Australian Lightning Ridge Opal Rough, 59g, 98WS: This collection of raw opal rough hails from Australia's legendary Lightning Ridge, showcasing the region's iconic play-of-color potential. The stones exhibit a range of natural hues, from milky white

2026

Natural Australian Lightning Ridge Opal Rough, 59g, 98WS

ThousandPlanetSathorn, Bangkok

24.70ct Natural Mauritania Ruby Rough (Unheated), 85XA: This unheated Mauritania ruby rough is a striking natural crystal specimen, featuring a rich, saturated magenta hue with subtle purple undertones that deepen toward the core. The rough's rugged, natur

2026

24.70ct Natural Mauritania Ruby Rough (Unheated), 85XA

ThousandPlanetSathorn, Bangkok

Natural Australian Lightning Ridge Opal Rough, 73g, 88WS: This collection of raw opal rough hails from Australia's legendary Lightning Ridge, showcasing the region's iconic play-of-color potential. The stones exhibit a range of natural hues, from milky white

2026

Natural Australian Lightning Ridge Opal Rough, 73g, 88WS

ThousandPlanetSathorn, Bangkok

19.13 Carats Welo Opal Cabochon Parcel - Natural Ethiopian Stones, 48XA: This luminous collection of Welo opals showcases a rich spectrum of warm and cool translucent body tones, from milky white and soft cream to honey and golden amber, each adorned with vivid, shifting c

2026

19.13 Carats Welo Opal Cabochon Parcel - Natural Ethiopian Stones, 48XA

ThousandPlanetSathorn, Bangkok

1660Ct Natural Type A Burmese Jadeite Jade Rough Stone - Green Raw Material, 19ZB: Natural Type A Burmese jadeite rough stone, displaying a deep dark green base with intricate light green and brown veining patterns across its smooth, weathered surface. The stone retains its natural,

2026

1660Ct Natural Type A Burmese Jadeite Jade Rough Stone - Green Raw Material, 19ZB

ThousandPlanetSathorn, Bangkok

18.17ct Natural Mauritania Ruby Rough (Unheated), 93AM: This unheated Mauritania ruby rough is a striking natural crystal specimen, featuring a rich, saturated magenta hue with subtle purple undertones that deepen toward the core. The rough's rugged, natur

2026

18.17ct Natural Mauritania Ruby Rough (Unheated), 93AM

ThousandPlanetSathorn, Bangkok

14.53ct Natural Mauritania Ruby Rough (Unheated), 83XA: This unheated Mauritania ruby rough is a striking natural crystal specimen, featuring a rich, saturated magenta hue with subtle purple undertones that deepen toward the core. The rough's rugged, natur

2026

14.53ct Natural Mauritania Ruby Rough (Unheated), 83XA

ThousandPlanetSathorn, Bangkok

16.80 Carats Matrix Boulder Opal Triangular Cabochon - Natural Australian Stone, 16XC: This striking matrix boulder opal cabochon, measuring 23.9 x 17.6 x 5.6 mm, is a dramatic display of natural geological artistry. Polished into a bold triangular shape, the stone features an intricate

2026

16.80 Carats Matrix Boulder Opal Triangular Cabochon - Natural Australian Stone, 16XC

ThousandPlanetSathorn, Bangkok

Natural Australian Lightning Ridge Opal Rough, 39g, 91WS: This collection of raw opal rough hails from Australia's legendary Lightning Ridge, showcasing the region's iconic play-of-color potential. The stones exhibit a range of natural hues, from milky white

2026

Natural Australian Lightning Ridge Opal Rough, 39g, 91WS

ThousandPlanetSathorn, Bangkok

1907 Barber Quarter PGA Gem Proof: 1907 Barber Quarter PGA Gem Proof

2026

1907 Barber Quarter PGA Gem Proof

Gold Standard AuctionsDallas, TX

2.73 Carats Play-of-Color Welo Opal - Natural Ethiopian Gem 11x9mm, 20XC: This captivating Welo opal gleams with a luminous cascade of multi neon color that ripple across the stone's surface with every movement. The play-of-color is vivid and well-distributed, presenting a

2026

2.73 Carats Play-of-Color Welo Opal - Natural Ethiopian Gem 11x9mm, 20XC

ThousandPlanetSathorn, Bangkok

Natural Moonstone & Diamond 92.5 Sterling Silver Pendant with Chain: Natural Moonstone & Diamond 92.5 Sterling Silver Pendant with Chain Gemstone Shape : Pear, Round Gemstone Size : 7x5 MM, 4x3 MM, 3.5 MM Gemstone Quantity : 3 Pieces Diamond Type : Lab Grown Diamond Sh

2026

Natural Moonstone & Diamond 92.5 Sterling Silver Pendant with Chain

Siddhi Gems & JewelsJaipur, Rajasthan

Natural Aquamarine & Diamond 92.5 Sterling Silver Pendant with Chain: Natural Aquamarine & Diamond 92.5 Sterling Silver Pendant with Chain Gemstone Shape : Round Gemstone Size : 3x2 MM, 2 MM Gemstone Quantity : 6 Pieces, 13 Pieces Diamond Type : Lab Grown Diamond Shape

2026

Natural Aquamarine & Diamond 92.5 Sterling Silver Pendant with Chain

Siddhi Gems & JewelsJaipur, Rajasthan

Lab Grown Emerald & Diamond 92.5 Sterling Silver Pendant with Chain: Lab Grown Emerald & Diamond 92.5 Sterling Silver Pendant with Chain Gemstone Shape : Oval Gemstone Size : 7x5 MM Gemstone Quantity : 1 Piece Diamond Type : Lab Grown Diamond Shape : Round Diamo

2026

Lab Grown Emerald & Diamond 92.5 Sterling Silver Pendant with Chain

Siddhi Gems & JewelsJaipur, Rajasthan

Natural Ruby & Diamond 92.5 Sterling Silver Necklace: Natural Ruby & Diamond 92.5 Sterling Silver Necklace Gemstone Shape : Round Gemstone Size : 8 MM Gemstone Quantity : 1 Piece Diamond Type : Lab Grown Diamond Shape : Round Diamond Color : D-

2026

Natural Ruby & Diamond 92.5 Sterling Silver Necklace

Siddhi Gems & JewelsJaipur, Rajasthan

Natural Tanzanite & Diamond 92.5 Sterling Silver Pendant with Chain: Natural Tanzanite & Diamond 92.5 Sterling Silver Pendant with Chain Gemstone Shape : Heart, Pear Gemstone Size : 9 MM, 7x5 MM Gemstone Quantity : 2 Pieces Diamond Type : Lab Grown Diamond Shape : Roun

2026

Natural Tanzanite & Diamond 92.5 Sterling Silver Pendant with Chain

Siddhi Gems & JewelsJaipur, Rajasthan

Natural Swiss Blue Topaz & Diamond 92.5 Sterling Silver Necklace: Natural Swiss Blue Topaz & Diamond 92.5 Sterling Silver Necklace Gemstone Shape : Round Gemstone Size : 3.5 MM Gemstone Quantity : 1 Piece Diamond Type : Lab Grown Diamond Shape : Round Diamond

2026

Natural Swiss Blue Topaz & Diamond 92.5 Sterling Silver Necklace

Siddhi Gems & JewelsJaipur, Rajasthan

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