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  2. Luminous gemstones - Wikipedia

    en.wikipedia.org/wiki/Luminous_gemstones

    Luminous gems are common theme in comparative mythology. Ball cross-culturally analyzed stories about luminous stones and pearls and found about one hundred variants in ancient, medieval, and modern sources. The wide-ranging locations of the tales comprise all Asia (except Siberia), all Europe (except Norway and Russia), Borneo, New Guinea, the ...

  3. Roman jewelry - Wikipedia

    en.wikipedia.org/wiki/Roman_jewelry

    Glass makers were supposedly so skilled that they could fool the public into thinking that glass beads and ornaments were actually gemstones. [7] When genuine gems were utilized, the stones preferred by Roman women were amethyst, emerald, and pearl. [8] Pearls were rare and expensive and were used in Roman jewelry up until the end of the Republic.

  4. Asterism (gemology) - Wikipedia

    en.wikipedia.org/wiki/Asterism_(gemology)

    Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.

  5. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    The name sapphire is derived from the Latin word sapphirus, itself from the Greek word sappheiros (σάπφειρος), which referred to lapis lazuli. [2] It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.

  6. Gemstones in the Bible - Wikipedia

    en.wikipedia.org/wiki/Gemstones_in_the_Bible

    The Greek name amethystos alludes to the popular belief that amethyst prevented intoxication; as such, drinking vessels were made of amethyst for festivities, and carousers wore amulets made of it to counteract the action of wine. [6] The amethyst is a brilliant transparent stone of a purple color and varies in shade from violet purple to rose.

  7. ‘Mysterious’ purple lump found at ancient Roman ruins was ...

    www.aol.com/mysterious-purple-lump-found-ancient...

    The “incredibly rare” lump was unearthed at a 1,700-year-old bathhouse in the United Kingdom. ‘Mysterious’ purple lump found at ancient Roman ruins was once ‘worth more than gold’ Skip ...

  8. Jewellery - Wikipedia

    en.wikipedia.org/wiki/Jewellery

    Navaratna (nine gems) is a powerful jewel frequently worn by a Maharaja (Emperor). It is an amulet, which comprises diamond, pearl, ruby, sapphire, emerald, topaz, cat's eye, coral, and hyacinth (red zircon). Each of these stones is associated with a celestial deity, representing the totality of the Hindu universe when all nine gems are together.

  9. Cardinal gem - Wikipedia

    en.wikipedia.org/wiki/Cardinal_gem

    The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1] The term has largely fallen out of use. The five traditional cardinal gems are: amethyst (purple) – Rare and precious in the Old World until large deposits were found in Brazil. diamond (transparent)