This Boulder opal specimen has bright opal colors glowing from within the light tan sandstone. The rich violet and bright aqua opal colors change and glow. The colors  have that magical way of shimmering and glowing when moved. This specimen made from Organic Pipe Opal. Pipe opal is formed by tubes of opal occurring in sandstone rather than ironstone boulders. It formed millions of years ago when organic matter, such as twigs and leaves, disintegrated leaving cavity’s that the liquid opal filled. This  opal specimen has a highly polished surface with heaps of that natural character that Boulder Opal is known for. The specimen has a rustic organic look and feel, which  invites you to touch. Boulder Opal is a beautiful and unique opal that has a huge variety of color not found in any other gemstone. It is a unique form of opal because it is found as a mixture of precious opal and sandstone together. The Boulder Opal  was mined in the Winton area and has been expertly hand shaped and polished by us to highlight the natural beauty of the opal. This is an excellent showpiece for any gemmologist, collector or opal enthusiast. The polished Boulder Opal specimen comes packaged in a gift box.

Opal Specimen Dimensions

The polished Boulder Opal specimen measures 60mm  by 40mm at the base and stands 40mm at the  tallest point.    

This is a great example of Boulder Opal Wood Replacement/Fossilized Wood . It is a type of petrified wood where the organic material has been replaced by opal. To be termed wood replacement opal, it is hypothesized that a wood branch or tree root has become opalized, where the wood has been replaced by opal. This Boulder Wood Replacement opal (opalized wood fossil) still retains fragments of vegetation snap frozen in time, potentially millions of years ago. This Boulder Opal specimen displays sparkling pinks and pastel green coloration within the now rock, wood grain. The opal colors glow and shimmer in the light. This opal specimen has a highly polished surface with heaps of that natural character that Boulder Opal is known for. The specimen has a slightly curved surface which  invites you to touch. Boulder Opal is a beautiful and unique opal that has a huge variety of color not found in any other gemstone. The Boulder Opal specimen was mined in the Winton area and has been expertly hand shaped and polished by us to highlight the natural beauty of the opal. This is an excellent showpiece for any gemmologist, collector or opal enthusiast. The polished Boulder Opal specimen comes packaged in a gift box.

Opal Specimen Dimensions

The polished Boulder Opal specimen measures 51mm by  50mm at the widest,  and is 7mm thick.