Natural Multi Color Opal Flashing Boulder 19.77 Ct. Free Form Cabochon Gemstone From AustraliaTreasure of Gems & Jewelry4.4(213)$1Feb 08, 2026
Sold10.04 ct Australian Boulder OpalItem: 10.04 ct Australian Boulder Opal Gemstones: Opal Carat Weights: 10.04 Size/Dimensions: 17.9 mm x 15.6 mm x 4.9 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so that colSee Sold Price
Sold18K AUSTRALIAN BOULDER OPAL PENDANTthe gold mounted pendant set with an oval opal approx. 34x18mm, overall length 2", stamped '18K DSG', on a 15.5" bar link chain stamped 750, (pendant 9.4gms., chain 4gms.), gross weight 13.4gms., OpenSee Sold Price
Sold14Kt Yellow Gold Australian Boulder Opal / Diamond Ring.14Kt Yellow Gold Australian Boulder Opal / Diamond Ring. Ring has one Australian Boulder Opal on the center with 10 round Diamonds. Ring size: 2.75. Total weight: 7.50 Grams.See Sold Price
SoldNatural Australian Boulder Opal Specimens 5pc LOTFive natural Australian boulder opal specimens featuring organic forms with vibrant flashes of blue and violet within the ironstone matrix. Each piece includes polished areas that highlight the opalsSee Sold Price
SoldArt Nouveau Yowah Australian Boulder Opal Diamond 14K Gold StickpinThis is an antique Art Nouveau 14K gold stickpin featuring a fine Yowah Australian boulder opal cabochon and two Old European cut diamonds. The diamonds are I clarity and HI color. It is 2 1/2" long aSee Sold Price
Sold96ct. Australian Boulder Opal Cabochon CollectionThis is a collection of Australian Boulder Opal cabochons. The opal was mined in the Outback of Queensland in Australia. Each one shows fantastic flash and colors of blue, green, red, purple and pink.See Sold Price
Sold138ct. Australian Boulder Opal Cabochon CollectionThis is a collection of Australian Boulder Opal cabochons. The opal was mined in the Outback of Queensland in Australia. Each one shows fantastic flash and colors of blue, green, red, purple and pink.See Sold Price
SoldAntique 14k Gold Australian Boulder Opal RingLot 318 Antique 14k Gold Australian Boulder Opal Ring Ring Size: 5, Width: .26 in. Diameter: .89 in. Opal: 5.5 x 2.75 mm 2.32 gSee Sold Price
SoldCts 15.25 Natural Australian Boulder Opal -25x13x5mmMineral : Natural Australian Boulder OpalDimensions: mm 25x13x5 Weight: Cts. 15.25 Origin (Region/ City):Quilpie, QLD, Origin (Country):Australia The Yowah opal field located in Queensland Australia iSee Sold Price
SoldCts 45.60 Natural Australian Boulder Opal - 35x18x8 mmMineral Form: Natural Australian OpalSee Sold Price
SoldCts 53.40 Natural Australian Boulder Opal - 30x26x6 mmMineral : Natural Australian Boulder Opal Dimensions:30x26x6 mm Weight:53.40 Cts Origin (Region/ City):, Queensland Origin (Country): Australia Pictures taken with high resolution camera on differSee Sold Price
SoldCts.40.70 Natural Australian Boulder Opal -Mineral: Natural Australian Boulder Opal Dimensions:31x29x7 mm Weight:40.70 cts Origin(Region/City):Queensland Origin(Country):Australia Pictures taken with high resolution camera on different backgroSee Sold Price
SoldStamped 925 Sterling Silver Australian Boulder Opal PendantThousand 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
Sold5.92 ct Australian Boulder OpalItem: 5.92 ct Australian Boulder Opal Gemstones: Opal Carat Weights: 5.92 Size/Dimensions: 17.5 mm x 12.4 mm x 4.0 mm Please note that this lot has a confidential reserve. When you leave a bid in advaSee Sold Price
SoldCts.24.60 Natural Australian Boulder Opal -Mineral: Natural Australian Boulder Opal Dimensions:32x20x6 mm Weight:24.60 Cts. Origin(Region/City):Queensland Origin(Country):Australia Pictures taken with high resolution camera on different backgrSee Sold Price
SoldStamped 925 Sterling Silver Australian Boulder Opal PendantThousand 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
Sold22.92 ct Australian Boulder Opal Gemstone Cabochon22.92 ct Boulder Opal cabochon. 28 x 18mm. Queensland Australia origin gemstone. Perfect shape & size for a lovely pendant.See Sold Price
Sold10.69ct 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
Sold10.46ct 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
SoldCts. 40.25 Natural Australian Boulder Opal -Mineral: Natural Australian Boulder Opal Dimensions:27x20x9 Weight:40.25 cts. Origin(Region/City):Queensland Origin(Country):Australia Pictures taken with high resolution camera on different backgrounSee Sold Price
SoldCts. 33.70 Australian Boulder Opal SpecimenDimensions: 23x18x14 mm; Weight: 33.70 Cts. Photos in wet condition. Boulder opal is a unique gem that contains pieces of the hostrock it grew from, along with precious opal. Some opals are attached tSee Sold Price
SoldAustralian Boulder Opal Silver PendantQuantity: 1 Condition: Good Origin: Oceanic/Pacific Rim > Australian Materials: Opal Item location: NSW, Australia Shipping: In-house shipping available (+5%)See Sold Price
SoldAustralian Boulder Opal PaperweightAustralian Boulder Opal Paperweight Opal Size approximately 2.5 x 3.5 x 1 cm Quantity: 1 Condition: Good Height: 3cm or approximately 1.18 inches Width: 10cm or approximately 3.94 incheSee Sold Price
