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2. Tiger's eye - Wikipedia

   en.wikipedia.org/wiki/Tiger's_eye

   Tiger's eye (also called tiger eye) is a chatoyant gemstone that is usually a metamorphic rock with a golden to red-brown colour and a silky lustre.As members of the quartz group, tiger's eye and the related blue-coloured mineral hawk's eye gain their silky, lustrous appearance from the parallel intergrowth of quartz crystals and altered amphibole fibres that have mostly turned into limonite.

3. Chatoyancy - Wikipedia

   en.wikipedia.org/wiki/Chatoyancy

   Tiger's eye Tiger's eye. In gemology, chatoyancy (/ ʃ ə ˈ t ɔɪ. ən s i / shə-TOY-ən-see), also called chatoyance or the cat's eye effect, [1] is an optical reflectance effect seen in certain gemstones, woods, and carbon fiber. Coined from the French œil de chat, meaning 'cat's eye'. The chatoyant effect is typically characterized by ...

4. Jewels! The Glitter of the Russian Court - Wikipedia

   en.wikipedia.org/wiki/Jewels!_The_Glitter_of_the...

   Bibi van der Velden, a Dutch jewelry designer, was inspired by the show items by Russian court jewelers that display their craft in ways that explore material use as well as visual references. She selected a Neptune sculpture from circa 1600 that was placed on show in the "Treasury" room. [ 4 ]

5. Pietersite - Wikipedia

   en.wikipedia.org/wiki/Pietersite

   Polished Pietersite. Pietersite is a commercial term for a variety of the mineral chalcedony.Originating from Namibia and China, where it is mined for use as a decorative stone due to its chaotic chatoyancy and brecciated structure.

6. Cameo (carving) - Wikipedia

   en.wikipedia.org/wiki/Cameo_(carving)

   A cameo carved into the dorsum of a shell of the tiger cowry, Cypraea tigris. Since the late 19th century, the species most used in good-quality cameos has been Cypraecassis rufa, the bullmouth helmet, the shell of which can be up to 6 inches long. In this species, the upper shell layer is whitish, and the lower shell layer is a rich orange-brown.

7. List of jewellery types - Wikipedia

   en.wikipedia.org/wiki/List_of_jewellery_types

   Medical alert jewelry; Membership pin; Military dog tags; Pledge pins; Prayer jewelry Japa malas; Prayer beads; Prayer rope; Rosary beads; Puzzle jewelry. Puzzle ring; Signet ring; Thumb ring; Gemstone Jewelry