Sold2022Boulder Opal in Natural MatrixNice specimen of boulder opal in its natural host ironstone rock, polished up so you can see the opal veins. Perfect to make a necklace out of. Stone measures 1 3/4" x 1" and weights 17g.See Sold Price
Sold202043.10 ct natural matrix boulder opalTitle: 43.10 ct natural matrix boulder opal Color/Clarity: opaque Gemstone Type: natural/untreated Carat Weights: 43.1 Size/Dimensions: 31.29 X 25.47 X 7.57 MM Additional Information: Please ,note thaSee Sold Price
Sold202012.76 ct boulder opalTitle: 12.76 ct boulder opal Color/Clarity: matrix opal Gemstone Type: natural/unheated Carat Weights: 12.76 Size/Dimensions: 24.42 X 16.34 X 6.19 MM Additional Information: Australia Reserve: $55.00See Sold Price
Sold2024Matrix Boulder Opal 14.10 Ct. Oval Cabochon Shape 17.3 x 13.6 Mm. Natural Gemstone UnheatedProduct ID: 818723095 Product Name: Natural Opal Weight: 14.10 CT. Size: 17.3 x 13.6 x 7 MM. Shape: Free Form Cabochon Color: Multi-Color Clarity:Opaque Luster: Strong Iridescent Gems Origin: AustraliSee Sold Price
Sold2016AKR Pietersite Monkey Garnet Pin PendantThis exquisite AMY KAHN RUSSELL Pin/Pendant features a monkey carved in boulder opal matrix with a beautiful pietersite cabochon and two faceted garnet briolets. The pin is 2 7/8 inches high by 1 3/8See Sold Price
Sold2020153ct LOOSE LARGE NATURAL BOULDER MULTI COLORED OPALLARGE NATURAL ROUGH BOULDER OPAL Natural rough boulder opal 153ct Measures 1.91" Long x 1.37 " Wide Multi colored Greens, blues, and purplesSee Sold Price
Sold202110.69ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL10.69ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.69ct Measures 21.8mm x 14.3mmSee Sold Price
Sold202210.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL10.46ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.46ct Measures 16.5mm x 9.8mm Polished cabochon, beautifulSee Sold Price
Sold2023Rare Precision Master Cut of Australian Yowah Boulder Opal Unique Matrix Pattern 19.2x13.8x8.7mmThousand Planet Auction House Treasure Auction Day, all major kinds of Mineral, you will find in today's auctions. Join us and add our auction into your calendar. Today auction including Artifacts, MiSee Sold Price
Sold2023GIT Certified Natural Boulder Opal 4.28 Cts White Color with play Of Color EffectProduct Type: Natural Boulder Opal Product Code: O0013 Piece(s): 1 Weight: 4.28 Carats Color: White With Play Of Color Effect Clarity: Opaque with natural inclusions. Shape: Rectangular Cushion Size:See Sold Price
Sold2023GIT Certified Natural Boulder Opal 1.73 Cts Black with play Of Color EffectProduct Type: Natural Boulder Opal Product Code: O0016 Piece(s): 1 Weight: 1.73 Carats Color: Black with Play Of Color Effect Clarity: Opaque with natural inclusions. Shape: Triangular polished Size:See Sold Price
Sold20237.26Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval CabochonKsmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturiSee Sold Price
Sold20234.18Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval CabochonKsmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturiSee Sold Price
Sold20233.50Ct Koroit Matrix Boulder Opal Polished - Australian Opal - Oval CabochonKsmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturiSee Sold Price
3 days LeftTreasure of Gems & JewelryNatural Multi-Color Flashing Boulder Opal 24.17 Ct. Free Form Cabochon Gemstone$1
Jun 01Treasure of Gems & JewelryNatural Multi Color Flashing Boulder Opal 3.22 Ct. Free Form Cabochon Gemstone From Australia$1
Jun 01Treasure of Gems & JewelryNatural Multi Color Flashing Boulder Opal 10.60 Ct. Free Form Cabochon Shape 22 x 11.4 Mm. Gemstone$1
Jun 01Treasure of Gems & JewelryNatural Multi Color Flashing Boulder Opal 11.88 Ct. Free Form Cabochon Shape Gemstone From Australia$1
Jun 08Treasure of Gems & JewelryNatural Opal Multi Color Flashing Boulder 2.68 Ct. Free Form Cabochon Gemstone From Australia$1
3 days LeftTreasure of Gems & JewelryNatural Unheated Multi Color Swan Opal Boulder Carving 21.67 Ct. Gemstone From Australia$1
21 hrs LeftHannam's Auctioneers LtdA collection of silver gemstone rings including Boulder Opal. 38 grams. O to S. (qty)£10
1 day LeftThousand Planet Auction HouseLot of 3 Exquisite Boulder Opals from Winton Mine, Queensland, Australia$5