$Refractometer$

Other tools

Spectroscope

Spectroscope, how to use

Conductometer

A conductometer measure heat propagation trhough stone. Allow to discrimintate between artificial and natural stones

Proportion calculation theoritical weight.

Theoritical weight of diamond for most common shapes brilliant, oval, marquise, heath, pear, emerald and square

to find out the specific gravity of your gem: visit www.gemologyproject.com

Specific Gravity or density calculation

How to calculate specific gravity with a scale and a beaker of water

For more information, watch this video

Specific Gravity or density measurement

Using bromoform, Pure methylene iodide and Clerici solution

$Refractometer$