certificate jewelry, Agate

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certificate jewelry, Ruby
Ruby

ruby is a pink to blood-red coloured gemstone, a variety of the mineral corundum . ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.

certificate jewelry, Lapis Lazuli
Lapis Lazuli

lapis lazuli, or lapis for short, is a deep-blue metamorphic stone used as a semi-precious stone that has been prized since antiquity for its intense color.

certificate jewelry, Topaz
Topaz

topaz is a silicate mineral of aluminum and fluorine. topaz crystallizes in the orthorhombic system, and the crystals are often prismatic terminated by pyramidal and other faces.