Gemological Services

Diamond Grading

Diamond Grading can only be done by a professional qualified gemologist and our personnel is trained and qualified to provide this service.

Rocas can grade and certify loose diamonds, as well as mounted diamonds as long as its permitted by the mounting. The certificate provided is a statement of reliability, consistency and professionalism and is recognised world-wide.

Gem Identification

Gem Identification is the science of identifying stones.

At Rocas we can identify your stones. A red stone is not always a Ruby it can be a Spinel, glass and many other stones with different names and different values.

We also separate stimulants from natural and imitation from natural stones

Appraisals

Jewellery appraising is done at Rocas for insurance purposes or any other personal reason.