Tag Archives: diffraction of light

Marc Aronstam talks about pearls

Pearls are classic, timeless and elegant and a miracle of nature. One of my favorite gem “stones,” pearls come in a huge variety of colors, from classic white to pink, silver, cream, golden, green, blue, black, and even rainbow-hued. Actually a mineral (calcium carbonate) rather than a true stone, pearls are formed in layers, slowly,…

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