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inclusions

Appraising Opals

…Cut: Too thin, too thick, or uneven thickness Imperfections: Considerable matrix or other inclusions visible on the crown Commercial Colors:…

HPHT Diamond Update

…look for frosted naturals, frosted feathers, faceted girdles with bearding, melted inclusions, or melted graining on the girdle. These inclusions

Mechanical Gemstone Cleaning

Inclusions, some visible to the naked eye and others microscopic, are present in many gems. Some add great beauty and interest to a gemstone. However,…

Ruby and Sapphire Origins

…fine tubes; small black crystals and short rods; healed fissures; color zoning. For information on inclusions typically found in corundum,…

An Introduction to Fancy Gem Cuts

inclusions will be clearly visible through these large facets, which act as windows into the stone. White diamonds will also show any color.…