Micro-WorldGems & Gemology, Summer 2023, Vol. 59, No. 2

Musical Diamond

Michaela Damba

Recently the author examined a 0.95 ct diamond with a special note. It only took one and a half beats to discover a dark crystal with a straight stress cleavage crack shaped like a dotted quarter note (see above).

Crystals, cleavages, and other inclusions are common occurrences that impact a diamond’s clarity grade. This diamond received a clarity grade of SI1, or slightly included with inclusions noticeable to a skilled grader at 10× magnification.

Michaela Damba is a senior staff gemologist at GIA in Carlsbad, California.

You Might Also Like

YMAL AJP
Discover GIA's New Campus in London
Learn About NextGem
GIA NextGem™ Diamond Training for Retail
Explore GIA Laboratory Promotional Offers
Explore GIA Laboratory Promotional Offers
Shop the GIA Store
Shop the GIA Store