Stones that are deep blue with small patches of pyrite and calcite are considered the most valuable. Like turquoise , lapis lazuli is an opaque stone. It was believed by some that lapis lazuli would protect the wearer from evil. Enhancements Lapis lazuli is commonly impregnated with colorless wax or oil to improve appearance. More information on gemstone enhancements.
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Actual carat weight may vary from the average carat weight listed. All rights reserved.