This website uses cookies to ensure you get the best experience. Learn more
The stones, averaging ten to a carat, are found in the river gravel or in alluvial deposits.
One (English) carat =3.17 grains = gram.
African mines the diamonds are not only crystals of various weights from fractions of a carat to 150 carats, but also occur as microscopic crystals disseminated through the blue ground.
In diamond weighing the grain = ± of the carat, = 7925 of the troy grain.
The cost of diamond earrings can range from less than $100 to several thousand dollars, depending on the precious metal used, the total carat weight of the stones, the diamond quality of the stones, and the nature of the earring design.