• Location: Indonesia
• Weight: 1.2g = 6.1ct
• Dimensions: 1.5 x 1.4 x 0.3 cm
• DETAILED DESCRIPTION

Indonesian opals are primarily found on the islands of Java and Borneo, with smaller deposits also in Sumatra. Compared to the renowned Australian mining areas, these stones are less widespread. They are mostly volcanic in origin, formed where silicate-rich solutions deposit into rock fissures in regions of intense volcanic activity. Their colors can range from milky white or greyish tones to dark, sometimes almost black, shades. Under certain lighting conditions, some specimens display a subtle iridescent play of colors. The so-called "wood opals," which form when ancient wood is permeated and fossilized, are also quite common. These often retain visible organic patterns from the original material. Opal extraction in Indonesia is not as extensive as in some other countries, which partly explains the lower global awareness of these stones. Mining is frequently carried out by hand, with minimal mechanization, and many specimens are subsequently cut and polished. Indonesian opals are valued mainly for their exotic origin. They are rarely exported in large quantities, making them a rare and sought-after addition to collectors' portfolios. Indonesian Opal – Cabochon – Indonesia