When looking at the general appearance of fancy GIA Certified Diamonds, make sure that the stone is appealing to your eye and that it is bilaterally symmetrical.
Tiffany Style Diamond have traditionally been graded using the 4 C’s. Carat weight is simply the weight of diamond necklace. Color and clarity are important when determining the rarity of diamond necklace. Cut is the C that helps determine the Light Performance of diamond necklace.
diamond fashion associated with harzburgites are about 3.3 billion years old -- more than two thirds the age of Earth itself.