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Zamak
Zamak is a zinc alloy containing some aluminum (3.9-4.5%) and copper (0.02-0.05%).

Zinc
An abundant, lustrous, bluish-white, metallic element of the magnesium-cadmium group. Zinc is brittle at room temperature but malleable when heated. It is used to form a wide variety of alloys including Brass, Britannia, Bronze, various solders, and Nickel Silver. Because zinc is not easily oxidized in moist air it is used for sheeting, coating galvanized iron (and other metals), for electric fuses, anodes, meter cases, in roofing, gutters, and is also largely consumed in electric batteries.

Zircon
Zircons are very common minerals which occur naturally in clear, yellow, brown, orange and reddish-brown colors. Zircon is frequently heat treated to enhance or alter their color. Mohs scale: 6.5-7.5. Many people confuse the natural gem zircon with cubic zirconia which is a man-made, synthetic used as an inexpensive alternative to a diamond. Note that these are completely different materials.

Zoisite
Zoisite (Calcium-aluminum silicate) is a gray-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), and 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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