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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. Gemstone Meanings: Power and Significance of the 25 Most ...

   www.aol.com/gemstone-meanings-power-significance...

   Citrine “A powerful gemstone crystal in a range of deep yellows, oranges, and yellow-cream-white, the citrine gemstone is said to bring abundance and wealth into one’s life,” Salzer says.

4. Asterism (gemology) - Wikipedia

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

   Asterism is generated by reflections of light from twin-lamellae or from extremely fine needle-shaped acicular inclusions within the stone's crystal structure. [1] A common cause is oriented sub-microscopic crystals of rutile within the gem mineral. It occurs in rubies, sapphires, garnet, diopside, and spinel when a cabochon is cut from a ...

5. Belomorite - Wikipedia

   en.wikipedia.org/wiki/Belomorite

   Iridescent regional varieties, which are quite similar in composition and properties to belomorite, are naturally less common, but it would be wrong to call them rare minerals. Plagioclases with moonlight have long been known in some pegmatite veins of Shaitanka and Lipovka (Middle Urals ), as well as in Utochkina Pad near Ulan-Ude ( Buryatia ).

6. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...

7. Gemstones in the Bible - Wikipedia

   en.wikipedia.org/wiki/Gemstones_in_the_Bible

   Structurally, it is a hexagonal crystal with a brilliant reflecting green colour. The emerald is highly polished and is found in metamorphic rocks , granites , and mica schist. Many of the finest specimens have been found in Muzo , Bogota , South America but the ancients obtained the stone from Egypt and India.