For a more personal appraisal you will need to complete
and submit the form in the 'gem identification' section.
These interactive pages allow you to calculate your relative carat size
using your ruler to measure in millimeters or tenths of an inch as well as
cut, shape and height. It also applies specific gravity to estimate volume before
supplying the resulting carat weight.
Then with the carat size and the gemstone rating a price formula is enacted
to give you an indication of the possible value of your gem.
The cost refers to an average gemstone without flaws.
It reflects average color purity, brightness and medium fire. Prices
are neither retail or wholesale. They approximate average international trading
prices for cut stones as pertaining to our market experience. There are restrictions
regarding small or very large carat sizes as it is impossible to make such estimations
without misleading generalizations. It also takes
into account the gemstones availability and its popular demand.
First we rate the availability on a scale of 1-1000 with 1 being the rarest and
1000 the most common (ie. if spinel is 110, ruby 40 and quartz is 950) and if, for example,
there are unlimited random gemstones available then 11% would be spinel, 4%
would be ruby and 95% would be quartz (for more information see our 'technical notes' in
the services section).
Four special AAA gemstones from our collection offered for sale. Submit your offers.
Look at our section on gem descriptions and ratings as evidenced by our market experience.