Learn to Use a Diamond Tester and Chelsea Filter (Video) - Gem Society
Learn to Use a Diamond Tester and Chelsea Filter (Video) - Gem Society
May 26, 2020
gemsociety.org
674K views · 60K reactions | Heading us to Wembley!  | Chelsea Football Club | Facebook
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Wait… why didn’t my emerald glow red under the Chelsea filter? Let’s talk about the Chelsea filter, a tool often used to test emeralds. What it actually detects is chromium, the element that gives many emeralds their rich green color. When an emerald is chromium-rich, it might glow pink or red under this filter. But here’s the twist… not all natural emeralds glow red. Some, even from Colombia, can appear yellow-green or do nothing at all. Why? Because they may contain lower chromium or a mix of
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