Diamonds: Beauty and Brawn. Carl Wozniak Graduate Gemologist (GIA) Northern Michigan University. The allure of diamonds. The world’s love of diamonds started in India. Romans set uncut diamonds in jewelry By the 1400s, diamonds had become fashionable in Europe. Roman ring, 4 A.D.
Graduate Gemologist (GIA)
Roman ring, 4 A.D.
A round brilliant cut diamond has either 57 or 58 facets.
In brilliant stones, much of the light that enters leaves through the crown. Less brilliant stones result when light leaks out the pavilion.
Fire, also known as dispersion, is the color play within a diamond caused by refraction of light in the stone.
Scintillation is caused by light reflecting off the stone’s facets.
45.52 ct., VS-1,
Flawless stones have no visible inclusions under 10 X magnification, and there are noblemishes on the stone’s surface.
Millenium Star, 203.04 ct., D, Flawless
Internally flawless stones have no visible inclusions under 10 X magnification, but there areblemishes on the stone’s surface.
Misalignment of facets, misshapen facets, and pointing problems go hand-in-hand. Where you find one, you’ll usually find the others.
Diamonds are made under temperatures of about 2,200º F and 50,000 atmospheres.
Cremated remains can be made into diamond.
CZ also comes in many colors.
Moissanite has a lot more fire than diamond.