Emerald: precious green gemstone, variety of beryl. Hardness of 7,5 - 8
Enhanced: Gemstones will be treated to improve the color or clarity. Heat-treatment is very common, all other methods (irradiation, coating, oiling, diffussion etc) have to be declared.
Mandarin-Garnet: orange variety of garnet (spessartite-group), hardness of 7 - 7,5
Malachite: opaque, semi-precious stone (green-banded), Hardness of 4
Morganite: pink variety of beryl. Hardness of 7,5 - 8
Moonstone: semi-transparent to translucent variety of feldpar. It occurs in different colors (white, pale yellow, grey, orange, brown and reddish) Hardness of 6 - 6,5
Quartz: the second common mineral on earth, including amethyst, ametrine, citrine, rose quarz, aventurine, rock crystal, chalcedony, chrysoprase and many others.