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2. Luminous gemstones - Wikipedia

   en.wikipedia.org/wiki/Luminous_gemstones

   Sagas say the two gems shone at night as brightly as did the sun at noon and guided mariners safely to port. In 1361 King Valdemar IV of Denmark conquered Gotland, but his rich booty, including the marvelous garnets, sank in the ocean when the king's ship was wrecked on the Kong Karls Land islands (Ball 1938: 500).

3. Durr Al Najaf - Wikipedia

   en.wikipedia.org/wiki/Durr_Al_Najaf

   Durr Al Najaf (Arabic: دُر ٱلنَّجَف) is a glossy and clear gemstone from the quartz family. The name means "pearl of Najaf" as it can only be sourced from Wadi-al-Salaam (Arabic: وادي السلام, romanized: Wādī al-Salām, lit. 'Valley of Peace') in Najaf, Iraq. The gemstone is found along the west of Najaf close by the Najaf ...

4. Phenakite - Wikipedia

   en.wikipedia.org/wiki/Phenakite

   Phenakite or phenacite is a fairly rare nesosilicate mineral consisting of beryllium orthosilicate, Be 2 Si O 4.Occasionally used as a gemstone, phenakite occurs as isolated crystals, which are rhombohedral with parallel-faced hemihedrism, and are either lenticular or prismatic in habit: the lenticular habit is determined by the development of faces of several obtuse rhombohedra and the ...

5. List of mythological objects - Wikipedia

   en.wikipedia.org/wiki/List_of_mythological_objects

   Colored Stones of Nüwa, five colored stones crafted by the goddess Nüwa that each represent one of the five Chinese elements, fire, water, earth, metal, and wood. ( Chinese Mythology ) Madstone , a special medicinal substance that, when pressed into an animal bite, was believed to prevent rabies by drawing the "poison" out.

6. Watchmakers Go for Precious Materials, Gemstones and ... - AOL

   www.aol.com/lifestyle/watchmakers-precious...

   GENEVA — Back to business and thrilled to meet again was the overarching sentiment at this year’s physical edition of Watches and Wonders, the annual fair devoted to some of the world’s ...

7. Ekanite - Wikipedia

   en.wikipedia.org/wiki/Ekanite

   Ekanite is an uncommon silicate mineral with chemical formula Ca 2 ThSi 8 O 20 or (Ca,Fe,Pb) 2 (Th,U)Si 8 O 20.It is a member of the steacyite group. It is among the few gemstones that are naturally radioactive.