Hydrothermal Emerald - Laboratory grown Emerald - Lab Emerald - Created Emerald
A common misconception is that all topaz is yellow; pure topaz is colorless, but the gem actually occurs in a broad range of colors including yellow, brown, pink, red, blue and green. Blue Topaz is demarcated from lightest to darkest by: Sky, Swiss and London blue.Topaz is known as early as the first century AD, topaz was the name originally associated with all transparent yellow gemstones. After falling into relative obscurity, the stone regained popularity around 1737 when fresh deposits were discovered in the Saxon region of Europe.
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