SUWA
QUALITY SCALE
PERIDOTS
Untreated

HOW TO CHOOSE

Peridot is relatively inexpensive, so a large gem-quality stone of 10 to 20 carats should be chosen. It is impressive when set in rings and pendants that can display its beautiful mosaic pattern.

In jewelry quality it is important to avoid brownish stones. Even though they may be called peridot, stones with a strong brownish color lack beauty and have little value. It is important to choose a gemstone based on beauty first, not just on the name and price of the stone.

The value of a three-carat-size peridot of jewelry quality is approximately US $250 for the stone alone (2004).

The 3 quality zones as they appear in the quality scale
Quantity distribution of gems that are polished to 3-carat size
 
VALUE INDEX
Carat(s) GQ JQ AQ
10 20.0 6.0 1.0
3 2.5 1.0 0.2
1 0.5 0.2 0.1
 
 
 
-GQ-Gem Quality
-JQ-Jewelry Quality
-AQ-Accessory Quality
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