amazing , thank you, LKJr
|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
This emerald strand is from Colombia.There is a silver plated clip on it so its ready to wear.Natural stones but oiled.
Size of largest piece 4 x 4 mm app
Weight 105.00 app
Length of beads: 18.5 inches.
Emeralds are a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium.
Beryl has a hardness of 7.5–8 on the 10 point Mohs scale
Emerald tends to have numerous inclusions and surface breaking fissures. Unlike diamond, where the loupe standard, i.e. 10X magnification, is used to grade clarity, emerald is graded by eye. Thus, if an emerald has no visible inclusions to the eye (assuming normal visual acuity) it is considered flawless. Stones that lack surface breaking fissures are extremely rare and therefore almost all emeralds are treated, "oiled", to enhance the apparent clarity. Eye-clean stones of a vivid primary green hue (as described above) with no more than 15% of any secondary hue or combination (either blue or yellow) of a medium-dark tone command the highest prices. This relative crystal non-uniformity makes emeralds more likely than other gemstones to be cut into cabochons rather than faceted shapes.
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