4C – EVALUATION OF DIAMONDS
THE MAIN RULE OF 4C
Kush Impex based on professional expertise, grew in response to the rapidly growing market for diamonds: the GIA (Gemmological Institute of America) established the Gem Trade Laboratory in the USA in 1935, the Gubelin laboratory in Lucerne issuing certificates since 1940, in 1961 the international organization,
CIBJO was established to join producers and sellers of precious stones, jewels and pearls, and in 1976 the Dutch Department of Certification established the Diamond high council (Hoge Raad voor Diamanten – HRD). There are four basic parameters for evaluating and certifying diamonds.
Cut is the definite shape and positioning of a diamond’s facets that influences the stone’s general aspect and its beauty. The cut determines the intensity of the diamonds – how light is reflected, scattered and sparkle.
The clarity of a diamond is resolved by the amount and location of flaws, or blemishes in the diamond. These flaws or inclusions are birthmarks that make each stone unique.
These flaws or inclusions are birthmarks that make each stone unique.
Diamonds occur in many hues in the range from colorless to light yellow or light brown. Nature has created diamonds in all colors of spectrum. The best color for diamond is no color at all.
Carat is the measurement for weight of a diamond. One carat equals 0.20 grams. Carat weight of a diamond is the easiest measurement to determine. Price of diamond increases with its size.