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  2. Moonstone (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Moonstone_(gemstone)

    Moonstone is a sodium potassium aluminium silicate ((Na,K)AlSi 3 O 8) of the feldspar group that displays a pearly and opalescent schiller. [ 1 ] [ 2 ] An alternative name for moonstone is hecatolite [ 2 ] (from goddess Hecate ).

  3. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    ^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...

  4. Belomorite - Wikipedia

    en.wikipedia.org/wiki/Belomorite

    Belomorite is a spectacular, inexpensive and popular ornamental stone; it is used in jewelry as one of the varieties of “moonstone”. It is typically cut into cabochons , often double-sided, convex in both directions, thus enhancing its brilliance, unlike, say, similar labradorite , which is often cut into flat plates cut parallel to the ...

  5. This watch was carved from a meteorite that hit Earth a ...

    www.aol.com/watch-carved-meteorite-hit-earth...

    The reason may be, at least partly, price. Toledano declined to disclose how much the fragment used for the B/1M cost, but he noted that raw meteorite can sell for more, per gram, than gold.

  6. A Guide Book of United States Coins - Wikipedia

    en.wikipedia.org/wiki/A_Guide_Book_of_United...

    A Guide Book of United States Coins (the Red Book) is the longest running price guide for U.S. coins. Across all formats, 24 million copies have been sold. [2] The first edition, dated 1947, went on sale in November 1946. Except for a one-year hiatus in 1950, publication has continued to the present.

  7. Gems of Sri Lanka - Wikipedia

    en.wikipedia.org/wiki/Gems_of_Sri_Lanka

    Sri Lanka’s gem industry has a very long and colorful history. Sri Lanka was affectionately known as Ratna-Dweepa which means Gem Island. The name is a reflection of its natural wealth.

  8. Sandakada pahana - Wikipedia

    en.wikipedia.org/wiki/Sandakada_pahana

    Sandakada Pahana, also known as Moonstone, is a unique feature of the architecture of ancient Sri Lanka. [ 1 ] [ 2 ] [ 3 ] It is an elaborately carved semi-circular stone slab, usually placed at the bottom of staircases and entrances.

  9. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    In the form of boric acid, price per boron contained. Min. 99% pure. 6: C: Carbon: 2.267: 200 (5.54 × 10 18 kg) 0.122: 0.28: 2018: EIA Coal [19] In the form of anthracite, price per carbon contained, assuming 90% carbon content. There is a wide variation of price of carbon depending on its form.

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