Glossary
Antiques & Collectables
Glossary of antique and collectable terms There are 856 entries in this glossary.
Z
| Term | Definition |
|---|---|
| Zamak |
Zamak is an acronym for Zinc Aluminium Magnesium and Kopper.. Zamak is a zinc alloy containing some aluminium (3.9-4.5%) and copper (0.02-0.05%). The addition of Copper and Magnesium will give to this alloy diverse properties allowing it to be used to cast parts in industries such as Automobile, Building, Electrical, Electronics, Telephony, Toys, Cloth & Sports, Decoration etc. There are many advantages of this high pressure die casting alloy. Used in continuous casting process, this alloys has great commercial advantages as it is cheaper than Aluminium and Magnesium, easy to cast (behave like virtual water) and has many similar properties to the both other non ferrous alloys.
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| Zircon |
Zircon (zircon silicate) is a lustrous gemstone that comes in colours ranging from golden brown to red to violet to blue. Pure zircon is colourless, but most zircon stones are brown. Zircon stones can be heat-treated to become blue or colourless; sometimes, heat-treated stones revert to their original colour. Clear zircon is sometimes sold, intentionally or otherwise, as diamond. Zircon has a hardness of 7.5
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| Zoisite |
Zoisite (Calcium-aluminum silicate) is a grey-green mineral that occurs in cracks of igneous rock. Zoisite has three known forms: Anyolite a green matrix containing rubies Tanzanite transparent, blue-violet containing strontium Thulite opaque pink crystals containing manganese Zoisite was named for the Slovenian mineral collector Baron Sigismund Zois von Edelstein, who financed the expedition that discovered Zoisite
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