189.68ct Australian Boulder Opal EST: $450 - $900 (

the 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., Open

This 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 a

This 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.

This 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.

Mineral : 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 i

Mineral Form: Natural Australian Opal

Mineral : 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 differ

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 backgro

Thousand 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, Mi

Item: 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 adva

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 backgr

Thousand 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, Mi

10.69ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.69ct Measures 21.8mm x 14.3mm

10.46ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.46ct Measures 16.5mm x 9.8mm Polished cabochon, beautiful

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 backgroun

Dimensions: 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 t

Quantity: 1 Condition: Good Origin: Oceanic/Pacific Rim > Australian Materials: Opal Item location: NSW, Australia Shipping: In-house shipping available (+5%)

Australian 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 inche

Title: 10.74 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.74 Size/Dimensions: 26 mm x 12 mm x 4.5 mm Additional Information: Koroit Opal Fields Please note that this lot has a

Signed Kevin Ma Australia 1999 on petrified wood (?) base. The koala approx 6.5" tall, overall height 9.75".

Sterling silver oval shape Australian boulder opal doublet pendant and chain necklace. Opal has very nice play of color. Chain length can be worn as 16 inches and 18 inches. Pendant length 1/2 inches

Mineral : Natural Australian Boulder Opal Dimensions:39x18x9 mm Weight:52.40 cts Origin (Region/ City):, Queensland Origin (Country): Australia Pictures taken with high resolution camera on differ

Title: 10.45 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.45 Size/Dimensions: 30.4 mm x 10.0 mm x 4.2 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts

Dimension: 4.5x3 cm Weight: 65 grams Estimate:$250-$450 In recent auctions, Australian Boulder Opals, especially in their rough form, have captured the fascination of many collectors. An analogous spe