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Blue sapphire from Pian Piyt Mine, Mogok.

Blue sapphire from Pian Piyt Mine, Mogok.

Ruby couple

Ruby couple

The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science.

The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science.

Sapphire with memo, silver ring. +62 82154323210

Sapphire with memo, silver ring. +62 82154323210

Ocean Jasper

Ocean Jasper

Rare honeycomb Opal. I love nature!!

Rare honeycomb Opal. I love nature!!

Emerald watch,16th- early 17th century

Emerald watch,16th- early 17th century

Rainbow Rock by BenjaminNeil, via Flickr

Rainbow Rock by BenjaminNeil, via Flickr

Tourmaline

Tourmaline