Australian Boulder Opals
Australian opals are world-renowned for their beauty and visual interest. The areas where many of these opals are mined is such an arid desert that entire mining communities are built underground--often with all the amenities of normal housing--to avoid the desert's intense heat. Boulder Opals are a special kind of Australian Opal, where the relatively fragile opal material is held in sturdy matrix, which not only protects the stone, but also adds character to each piece. That's why these stones are also called "Opals in Matrix." Koroit Opals and Yohawah Opals are two of the more well-known boulder opals from Australia.
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The design, complete with opal flashes, continues through to the back, which is also polished. Late..
The brown matrix design continues through to the back, which is also polished. Laterally drilled. M..
The back of this piece is unfinished matrix, with some fissures that do no affect the structural int..
A quiet pattern with tiny glimmers of opal add up to a pretty, albeit tiny, pendant. Polished brown..
The back of this pendant is a dark, polished brown. Laterally drilled. Mined in Australia. ..
The polished back is caramel-colored matrix. Laterally drilled. Mined in Australia. ..
The matrix design continues through to the back, which is also polished. Laterally drilled. Mined i..
This piece is so enchanting: As you turn the stone in strong light, tiny pinpricks of emerald green..
The design continues through to the back, which is also polished. Mined in Australia. ..
The back is polished dark brown matrix. Laterally drilled. Mined in Australia. ..
This piece has a convex face shaped like the top of a loaf of bread. Unpolished but flat back. Mine..
Polished, dark brown back. Mined in Australia. ..
This stone is wedge-shaped: One edge is 1mm thicker than the opposite edge. Both faces contain opal..
The bold opal-accented design of this stunning piece continues through to the back, which is also p..
Beautiful patterning in ochre and espresso, shot through with sparkling opal, characterizes this pi..
This piece is shown as it would hang--a little unusual, but if you don't care for it you can ignore..
This pendant has one convex face and one flat face, but the design shows on both polished faces. La..