Some hiddenite history

Article Abstract:

A 2 1/2 carat green spodumene which was the central piece of the famous Hamlin necklace was considered the finest hiddenite of its kind. The precious jewel was part of A C Hamlin's pendant collection.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Realgar

Article Abstract:

Realgar is an uncommon gemstone that is also unstable. Its use in jewelry is not recommended because it reduces to powder over time. Lately, the stone has been mined in China.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Refraction: single, double, triple?

Article Abstract:

An explanation is presented of the phenomenon of refraction, the refractive index and the causes of multiple refractions within a gemstone.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: