Topaz comes in range of colors, somewhere from deep golden yellow to pink topaz. Lot of colorless topaz is irradiated and heat treated to different Blues.
Royal blue color topaz is called, London Blue Topaz, it comes in faceted, cabochons and rose cut.
|Hardness||Country of origin||Size and shape||Price|
|8||Brazil||8×6 and up oval round||$4 to $8 per carat|
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