enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. 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

3. Victorian jewellery - Wikipedia

   en.wikipedia.org/wiki/Victorian_jewellery

   Victorian jewellery originated in England; it was produced during the Victoria era, when Queen Victoria reigned from 1837 to 1901. Queen Victoria was an influential figure who established the different trends in Victorian jewellery. [1] The amount of jewellery acquired throughout the era established a person's identity and status.

4. Amethyst - Wikipedia

   en.wikipedia.org/wiki/Amethyst

   Amethyst is a purple variety of quartz (SiO. 2) and owes its violet color to irradiation, impurities of iron (Fe3+. ) and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. [2][3][4] The irradiation causes the iron Fe3+.

5. Marcasite jewellery - Wikipedia

   en.wikipedia.org/wiki/Marcasite_jewellery

   Marcasite jewellery is jewellery made using cut and polished pieces of pyrite (fool's gold) as gemstone, and not, as the name suggests, from marcasite. [1] Both pyrite and marcasite are chemically iron sulfide, but differ in their crystal structures, giving them different physical properties. Pyrite is more stable and less brittle than ...

6. Tanzanite - Wikipedia

   en.wikipedia.org/wiki/Tanzanite

   Pleochroism. Present, dichroism or trichroism, depending on heat treatment. Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. [3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region in ...

7. Asterism (gemology) - Wikipedia

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

   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. It can appear when a suitable stone is cut en cabochon (i.e. shaped and polished, not faceted). A gemstone that exhibits this ...