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  2. 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. Birthstones are often worn as jewelry or a pendant necklace. History of birthstones

  3. Do You Know Your Birthstone? Here Are the Colors and Meanings ...

    www.aol.com/know-birthstone-colors-meanings...

    Each month has its own birthstone with a special meaning. Here's a guide to each dazzling gem from January to December. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please ...

  4. Peridot - Wikipedia

    en.wikipedia.org/wiki/Peridot

    Peridot olivine is the birthstone for the month of August. [17] Peridot has often been mistaken for emerald beryl and other green gems. [18] Noted gemologist G.F. Kunz discussed the confusion between beryl and peridot in many church treasures, most notably the "Three Magi treasure" in the Dom of Cologne, Germany. [19] [1]

  5. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    The black fire opal is the official gemstone of Nevada. Most of the precious opal is partial wood replacement. The precious opal is hosted and found in situ within a subsurface horizon or zone of bentonite, which is considered a "lode" deposit. Opals which have weathered out of the in situ deposits are alluvial and considered placer deposits.

  6. List of individual gemstones - Wikipedia

    en.wikipedia.org/wiki/List_of_individual_gemstones

    Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal; Flame Queen Opal; Galaxy Opal; Halley's Comet Opal, the world's largest uncut black opal; Olympic Australis Opal, reported to be the largest and most valuable gem opal ever found

  7. Tourmaline - Wikipedia

    en.wikipedia.org/wiki/Tourmaline

    Today this tourmaline locality (type locality for dravite) at Dobrova (near Dravograd), is a part of the Republic of Slovenia. [9] Tschermak gave this tourmaline the name dravite, for the Drava river area, which is the district along the Drava River (in German: Drau, in Latin: Drave) in Austria and Slovenia.

  8. Aquamarine (gem) - Wikipedia

    en.wikipedia.org/wiki/Aquamarine_(gem)

    The name aquamarine comes from aqua (Latin for 'water'), and marine, deriving from marina (Latin for 'of the sea'). [3] The word aquamarine was first used in the year 1677. [14] [10] The word aquamarine has been used as a modifier for other minerals like aquamarine tourmaline, aquamarine emerald, aquamarine chrysolite, aquamarine sapphire, or ...

  9. List of mineral symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_mineral_symbols

    Mineral symbols (text abbreviations) are used to abbreviate mineral groups, subgroups, and species, just as lettered symbols are used for the chemical elements. The first set of commonly used mineral symbols was published in 1983 and covered the common rock-forming minerals using 192 two- or three-lettered symbols. [ 1 ]

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