February 19, 2015
COLORED GEMSTONE CLARITY GRADING
CLARITY: Clarity is the second most important factor in colored gemstones.
The guidelines used for clarity in a diamonds and colored gemstones are different. Colored gemstones have more inclusions than diamonds, are not so neat, and there are certain gemstones that hardly ever appear clean.
MdMaya Gems uses the following clarity scale when grading gemstones.
Sometimes these inclusions are what make stones valuable (silks in rubies, the cat's eye effect in the alexandrite, etc.).
Setting aside translucent and opaque gemstones, the first classification to take into account is:
EYE CLEAN: Appears clean to the unaided eye. (Type 1, 2 and 3)
HEAVILY included: prominent inclusions that have a negative effect on appearance or durability.
SEVERELY INCLUDED: prominent inclusions that have a severe effect on appearance or durability or both. (Type 1, 2 and 3).
A clear example: Whilst in aquamarines the term slightly means that they show really small inclusions that are very difficult for the naked eye to notice (without using a magnifying glass), when talking about emeralds slighty means notable sized inclusions that can be easily seen.
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August 01, 2018
Spinel Gemstone Buying Guide. Color and Price, Cut and Sizes, Clarity and Typical inclusiones, where is found, August Birthstone, Famous Spinels and more information.
June 25, 2018
Each month of the year is associated with a certain gem, like the signs of the zodiac, anniversaries, etc. The correspondence of a particular stone with a certain month has been changing over time, although the use of gemstones as an amulet is still frequent even today.
June 18, 2018