This 66 carat natural boulder opal pendant from Winton, Queensland displays bright purple fire glowing through preserved wood fossil structure. The luminous color appears in concentrated patches across the center of the stone, creating contrast between vibrant fire and rich brown wood fossil matrix. The wood grain patterns remain visible throughout the ironstone, adding distinctive organic character to this piece. Winton boulder opals form in ancient wood and ironstone where precious opal fills natural cavities, creating authentic Australian gemstones with earthy appeal.

Measuring approximately 34.5 × 23 × 8.5 millimeters, this boulder opal pendant arrives ready to wear on a black adjustable cord necklace. The polished rectangular freeform shape provides comfortable proportions perfect for everyday casual wear and bohemian jewelry style. The adjustable cord allows customized length to suit any neckline or outfit preference. The moderate size makes this piece ideal for daily use without overwhelming smaller frames. For those who prefer permanent settings, this pendant can be professionally reset into yellow gold, white gold, rose gold, sterling silver, or bronze designs.

This is a 100% natural, untreated solid boulder opal, not a doublet or triplet. The opal and wood fossil ironstone formed together millions of years ago in the Queensland opal fields, ensuring authentic Australian origin with natural durability. The ironstone backing provides stability and foundation for the precious opal sections that display fire through the preserved wood structure.

Boulder opal pendants like this piece represent quality Australian gemstones at accessible price points with good value craftsmanship. As the official opal October birthstone, this pendant offers October born individuals a meaningful gift that celebrates their birth month with authentic natural beauty. The earthy wood fossil appeal and bright purple fire make this an excellent choice for collectors or anyone seeking distinctive statement jewelry with natural character. This boulder opal pendant necklace will arrive securely packaged in an Opal Galaxy luxury gift box, ready to wear immediately.