Emerald is a cyclosilicate.
What does an emerald mine look like.
This specimen is about 6 5 centimeters in height and has the blue green color and medium dark tone that is common in many emeralds mined in zambia.
We found a few specimens like this where you could see small green crystals in the rock with close inspection or magnification.
North carolina designated the emerald as the official state precious stone in 1973.
Emeralds with many flaws and cracks around the corners aren t good candidates for setting in jewelry.
A greater variety of minerals have been found in north carolina than in any other state more than 300 including some of the most valuable and unique gems in the world.
Cracks look like little hairs or threads on the plane of a facet.
Check the emerald with a loupe using reflected light to check for cracks and inclusions.
Most emeralds are highly included so their toughness resistance to breakage is classified as generally poor.
Emerald crystal from the kagem emerald mine zambia on a matrix of quartz and mica schist.
Beryl has a hardness of 7 5 8 on the mohs scale.
Emerald is a gemstone and a variety of the mineral beryl be 3 al 2 sio 3 6 colored green by trace amounts of chromium and sometimes vanadium.
Even if they can be set without damage they aren t likely to last long in the setting.