20.62ct Solid Australian Boulder Opal

Overview:

This solid natural Australian boulder opal is a captivating gem measuring 22 mm × 22 mm × 5 mm and weighing 20.62 carats.

Its surface bursts with vibrant play‑of‑color, featuring electric blues, vivid greens, fiery reds, and flashes of gold and violet that dance across the stone under light. The opal’s broad rolling flash pattern and ribbon‑like streaks create a dynamic visual depth, reminiscent of lightning through tropical waters. The brightness is high to exceptional, with color visible from multiple angles — a hallmark of premium boulder opal.

The ironstone host rock on the back adds natural contrast, grounding the gem’s brilliance and confirming its authenticity as a 100 % natural solid opal, not a doublet or triplet. Its polished cushion shape and smooth dome make it ideal for a statement pendant or collector’s display.

Specifications:

• Origin: Australian boulder opal

• Weight: 20.62 cts

• Dimensions: 22 × 22 × 5 mm

• Pattern: Broad flash with ribbon streaks

• Brightness: High to exceptional

• Body tone: Medium‑dark with strong contrast

• Finish: Expertly polished, mirror‑like surface

This opal is a true collector’s piece — a gem that captures the essence of Australia’s opal fields with its mesmerizing color play and natural character.