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Fire Opal and Black Opal with spectacular play of color are now being found in these areas
Approximate Size: 3-4 Inches / 76-101mm / 7
Formed deep underground during the cooling of magma
Like all obsidian
high-silica content
Imperial Topaz 8-9mm Rondelle Banded - 15-16 Inch february_jasper Fire Opal and Black OpalTopaz is a rare silicate mineral and obtains much of its popularity from its beautiful colors and its status as a birthstone. Topaz occurs in a wide range of natural colors; however, most natural topaz is colorless. The most highly regarded colors are the reds and pinks, which receive their color from trace amounts of chromium. The name "topaz," and variants of the name in other languages, have been used for yellowish gemstones for at least two
US$ 33.22
US$ 109.94
