GREEN STONES: BEYOND EMERALD AND PERIDOT

When customers think green gems, they envision emerald, and perhaps peridot. But there’s a broad range of alternatives to recommend, and they can be much more affordable than emeralds. If you know the other greens, you increase your chances of making a sale. The chromium factor. Chromium, a metallic element, makes rubies red and emeralds green. In other gem varieties, this natural coloring agent enriches the ordinary green color. Take green tourmaline, for example. With the presence of chromium, the color is superior and the stone becomes more expensive. A 3-ct. fine color green tourmaline will wholesale for about $100 per carat. But with chrome tourmaline, the color and rarity will affect the price, and a fine 3-ct. stone jumps to $600 per carat. Tsavorite is another gem that owes its rich color to chromium. It was not until the early 1960s that it was discovered in Kenya. The ind
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