Formation of rough diamond – production from mines – sources & location.

Various types of rough – Syndicate, Australian, Russian, South Africa, Coated, Brazilian, Cleavaz etc.

Diamond shapes & cuts – constants and characteristics of diamonds.

Process of acquiring parcel from DTC/ IDC / Belgium / Israel and Local – Bandha (i.e. Better – medium – weak).

Process of manufacturing – Factory polishing process – ghat (Bruiting), table, blocking, bottom, top, rounding, faceting, brillianteering.

Machinery knowledge bruiting, sawing machine, laser technology, laser kerfing – sawing, diamond scaife.

Rough diamond shading – color grading.

Introduction to rough assortment – makeable, sawable, cleavable, resale, rejection.

Model assortment, expected yield, table & culet planning, different types of planning, ‘planning’ as per clarity, planning as per weight or expected yield.

Estimated yield & proportions.

Information on polished goods: grading, shading, assortment final & exports.

Uses of rough diamonds.

Knowledge of gauging & sieving.

Valuation of rough and market practice – words commonly used in the market.

Identification of natural rough, young diamond and synthetic rough diamonds (CVD & HPHT Rough).