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2. Sapphire - Wikipedia

   en.wikipedia.org/wiki/Sapphire

   The sapphire is the traditional gift for a 45th wedding anniversary. [75] A sapphire jubilee occurs after 65 years. In 2017 Queen Elizabeth II marked the sapphire jubilee of her accession to the throne. [4] The sapphire is the birthstone of September. An Italian superstition holds that sapphires are amulets against eye problems, and melancholy ...

3. Birthstone - Wikipedia

   en.wikipedia.org/wiki/Birthstone

   A birthstone is a gemstone that represents a person's birth period, usually the month or zodiac sign. ... Sapphire, the birthstone for September. Lapis lazuli, ...

4. List of sapphires by size - Wikipedia

   en.wikipedia.org/wiki/List_of_sapphires_by_size

   Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.

5. Gemstones in the Bible - Wikipedia

   en.wikipedia.org/wiki/Gemstones_in_the_Bible

   The amethyst is a brilliant transparent stone of a purple colour and varies in shade from violet purple to rose. There are two kinds of amethysts: the oriental amethyst, a species of sapphire that is very hard (cf. Heb.,hlm), and when colourless is almost indistinguishable from the diamond. The occidental amethyst is of the silex family and is ...

6. List of individual gemstones - Wikipedia

   en.wikipedia.org/wiki/List_of_individual_gemstones

   Logan Sapphire. Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr. Star of India. Stuart Sapphire. Black Star of Queensland. Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Queen Marie of Romania Sapphire.

7. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...