Meanings and Abbreviations 

Cabochon - a stone of convex hemispherical or oval form, polished but not cut into facets

Corundum - a common mineral notably hard like sapphire and ruby

DIA - diamond

FW - french wire

FWP - fresh water pearls

Marcasite -

Rhodium - is a member of the platinum metals group, which include platinum, palladium, ruthenium, iridium and osmium.  Rhodium is a more expensive raw material and although not as brilliant as silver, has a greater anti-tarnish property

RP -

Sterling Silver - 92.5% silver alloyed with copper

Vermiel - 14k gold overlay on silver

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