Symmetry Evaluation Device Gets GIA's Thumbs Up

(IDEX Online News) – The Gemological Institute of America (GIA) has found that Sarin’s DiaMension HD has the necessary accuracy and repeatability to be used to evaluate symmetry. GIA reported the findings in the Winter 2011 edition of the Gems & Gemology quarterly magazine.

According to GIA, the device “demonstrated an apt capacity to deliver accurate and repeatable symmetry results,” adding that “improvements in the operation and accuracy (…) now enable us to also measure (…) symmetry parameters during the grading process.”

The diamond toolmaker's DiaMension family is the most widely used systems for measuring a polished diamond’s geometric proportions and determining its cut grade. Symmetry is a key cut grade parameter.

Sarin has adapted the Instructor and DiaVison software packages supported by the DiaMension HD to measure and display symmetry-related parameters, and will now provide this feature in existing and new systems.