This 284 carat natural wood fossil boulder opal from Winton, Queensland displays vibrant blue, cyan, green, and purple fire across fossilized wood structure. The opal color appears in bold patches and sections throughout the brown wood fossil matrix, creating striking contrast between brilliant fire and preserved organic texture. Winton boulder opals include rare wood fossil specimens where ancient timber has been replaced by precious opal over millions of years, preserving the original wood structure.

Measuring approximately 82 × 31 × 11 millimeters, this large format pendant arrives ready to wear on an adjustable brown cord necklace. The polished freeform shape follows the natural contours of the fossilized wood while showcasing concentrated areas of color play. The substantial size makes an impressive statement piece for casual everyday wear or bohemian style jewelry. For those who prefer metal settings, the drilled stone can be professionally reset into sterling silver, yellow gold, rose gold, or bronze designs.

This is a 100% natural, untreated solid boulder opal, not a doublet or triplet. The opal and wood fossil matrix formed together as silica rich water slowly replaced the ancient timber, creating this unique Queensland gemstone. The substantial weight and natural structure provide durability, with the fossilized wood serving as stable backing for the precious opal sections.

Wood fossil boulder opals like this piece represent quality Australian gemstones with distinctive character at accessible price points. As the official opal October birthstone, this pendant offers October born individuals a meaningful gift that combines natural beauty with ancient geological history. The earthy appeal and substantial presence make this an excellent choice for collectors or anyone seeking statement jewelry with authentic natural character. This boulder opal pendant necklace will arrive securely packaged in an Opal Galaxy luxury gift box, ready to wear immediately.