Australian Crystal Boulder Opal
Australian crystal boulder opal is a highly attractive variety of boulder opal where the top precious opal layer is completely translucent to transparent. This glassy clarity allows light to pass deep through the silica body, reflecting vibrant spectral colors that appear to float above the dark host rock. Sourced directly from Queensland, each gemstone in this collection is 100 percent natural and solid.
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36.28ct Top Gem Crystal Boulder Opal Heart
Original price was: AU$13,059.AU$6,335Current price is: AU$6,335.
Purple Winton Crystal Boulder Opal for Pendant 31.95 ct
Original price was: AU$12,959.AU$6,335Current price is: AU$6,335.
20.75ct Crystal Boulder Opal
AU$1,728
4.45ct Crystal Boulder Opal
AU$1,368
7.22ct Crystal Boulder Opal
AU$1,080
Crystal Opal 1.07ct
AU$720
The Fascinating Layering of Crystal Boulder Opal
The beauty of crystal boulder opal lies in the contrast between the glassy transparency of the crystal opal layer and the dark, opaque ironstone backing. The natural backing enhances the color play by absorbing light, making the vibrant flashes of green, blue, and red look incredibly intense. Because the opal layer is natural crystal, these gemstones display a unique depth that is highly sought after by custom jewelry makers and collectors.
We recommend checking our dedicated crystal boulder opal guide for in depth analysis of their unique properties. Every crystal boulder opal in this collection is ethically sourced and hand selected for its quality. Opal Galaxy never sells synthetic materials, ensuring that every purchase represents a real piece of the Australian outback. Learn more about payment options on the Opal Galaxy payment options page. Educational research by the Gemological Institute of America confirms the structural qualities of Australian precious opals.
Frequently Asked Questions
What is crystal boulder opal?
It is a Queensland boulder opal featuring a transparent to translucent top layer of precious crystal opal.
How does crystal boulder opal form?
It forms when silica rich fluids deposit and crystallize inside sandstone cavities instead of ironstone rock.
Is crystal boulder opal a doublet?
No, it is a fully natural, single piece solid gemstone organically bonded by nature.13
What colors are found in crystal boulder opal?
It typically exhibits bright, translucent greens, purples, and blues, which sparkle with exceptional depth.
How do I care for crystal boulder opal?
Clean gently with warm water, mild soap, and a soft cloth, avoiding chemicals or sudden thermal shock.