In the olden days carob seeds was used to weigh diamonds (0.20 grams equals one carat).This is where the word “carat” that is used for the unit weight of a diamond originates from.
The GIA developed a scale to asses and classify the colour of a diamond from D-Z with D being “Exceptionally White” and Z being a “Tinted Colour”.
The cut of a diamond is essential to its luster and brilliance and only applies to round diamonds.
Inclusions are natural imperfections or “birthmarks” in a diamond.A 10x magnification is used to compile the ranking of the clarity on the GIA scale.
Jack Friedman only sells conflict-free diamonds.
A Jack Friedman diamond is accompanied by a GIA, DIA, EGL or Jewellery Council of SA certificate.
The four C”s apply to diamonds presented in this catalogue weighing more than 0.20ct.