Precious Gemstones
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A gemstones or gems are pieces of mineral, which, in cut and polished form,are used to make jewellery or other decorations. The distinction between precious and and semi-precious gems goes back to ancient Greece and is based on the relative rarity and quality. Learn more about the four precious gemstones - diamonds, rubies, sapphires and emeralds, their chemical properties, and many variations in this book.

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Produktbeschreibung
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A gemstones or gems are pieces of mineral, which, in cut and polished form,are used to make jewellery or other decorations. The distinction between precious and and semi-precious gems goes back to ancient Greece and is based on the relative rarity and quality. Learn more about the four precious gemstones - diamonds, rubies, sapphires and emeralds, their chemical properties, and many variations in this book.