Northern Uruguay is home to one of the largest amethyst deposits in the world ... Amethysts are a type of quartz, recognizable by their striking violet hue. The gemstones are an important ...
ZME Science on MSN4mon
What makes gemstones so brilliantly colored — spoiler alert, it’s physicsThese substitutions alter how the mineral absorbs and reflects light, resulting in color. Let’s look at some examples.
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