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What is an Australian boulder opal?
1 Answer
An Australian boulder opal is an opal mined from a large ironstone boulder under the ground. This type of opal is the second most valuable opal behind the black opal. Spot an Australian boulder opal by checking for a solid layer of brown ironstone left on the back of the stone. Shop Australian boulder opals on 1stDibs.
1stDibs ExpertAugust 17, 2021
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Loose Boulder Opal - Solitaire
Located in Greensboro, NC
Stone Information
Natural Boulder Opal
Origin: Australia
Measurements
Condition: Pre-Owned
Category
21st Century and Contemporary Loose Gemstones
Materials
Opal
BUNDA 24.21ct Boulder Opal in silver
By Ben Bunda
Located in SYDNEY, AU
A BUNDA 'Couture' Boulder Opal pendant in sterling silver, featuring an Australian boulder opal, predominately blue, red and brown in colour.
Category
2010s Australian Necklace Enhancers
Materials
Opal, Silver
Natural Australian Boulder Opal 7.48ct
Located in Nicosia, Cyprus
Details
• Gemstone: Boulder Opal
• Cut: oval/ cabochon
• Weight: 7.48 ct
• Origin: Australia
• Treatment: No
• Dimensions: 13x10x6.5
• Certificate: Not included ,Professionall...
Category
20th Century Art Deco Loose Gemstones
Materials
Opal
1.68 cts, Boulder opal silver ring
Located in บางรัก, TH
Boulder opal silver ring
sku712
Weight: 1.68 cts
Size: 8x7 mm
Ring size: 7
Very beautiful natural piece, not a duble stone.
Category
2010s Artisan Cocktail Rings
Materials
Opal, Silver
Boulder Opal Diamond Gold Ring
Located in Beverly Hills, CA
A magnificent ring featuring a 14.15 carat boulder opal bezel with exceptional play of color.
Category
21st Century and Contemporary Fashion Rings
Materials
Diamond, White Diamond, Opal, 18k Gold, Yellow Gold
Boulder Opal, Emerald and Lapis Earrings
By Tinguely Bijoux
Located in Boston, MA
Gorgeous trio of custom cut Boulder Opal, sliced Emerald and Afghani Lapis Lazuli set in 18 karat gold.
Category
21st Century and Contemporary American Contemporary Drop Earrings
Materials
Emerald, Lapis Lazuli, Opal, 18k Gold
