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                  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Zircon:

Zircons are very ordinary minerals which arise naturally in clear, yellow, brown, orange and reddish-brown colors. Zircon is often heat treated to enhance or alter their color. Mohs scale: 6.5-7.5.

 

Zinc:

A rich, lustrous, bluish-white, metallic element of the magnesium-cadmium group. Zinc is brittle at space temperature but malleable when heated.