Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods not-for-sale — Type 25: Wheel relieved

— Type 25: Wheel relieved and recessed on one side and relieved on the other side

The display of unit price

BS EN 62258-5 is intended to assist all those involved in the supply chain for die devices to comply with the requirements of IEC 62258-1 and IEC 62258-2

It helps by setting out those characteristics and manufacturing requirements that affect safety

when the call is answered by a voice messaging systemcall answering facility

Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods not-for-sale — Type 25: Wheel relieved1 Scope This document specifies the terminology, classification and the methods that are used for the grading and description of single unmounted polished diamonds over 0,25 carat (ct). This document applies to natural, unmounted, polished diamonds. It is not to be used for fancy coloured diamonds, synthetic diamonds, treated diamonds (other than is allowed for in 7. 4), nor for assembled stones.