Every diamond in our selection is hand-chosen and carefully inspected so that even if the buyer was going to choose a diamond at random, the stone would still be of exceptional quality. Ziva Jewels only carries GIAThe Gemological Institute of America is the world’s foremost authority on diamonds, colored stones, and pearls. They are responsible for the establishment of the four C’s and issue diamond and gemstone certification based on unbiased analysis of gemstone quality. certified diamonds above an SI2 claritySI means ‘slightly included’ and refers to the diamond’s clarity rating. A diamond inclusion is another name for a diamond flaw. SI is one level below VS and two levels below VVS. grading, meaning all inclusionsAn inclusion is another name for a diamond flaw. The more included a diamond is, the lower clarity rating the diamond will receive. are microscopic and invisible to the naked eye. We believe that diamond brilliance is critical so all of our diamonds are cutCut is one of the 4 C’s and refers to the proper balance of proportions. If the facets are lined up correctly and at the proper angles, light will enter the diamond and be dispersed. If a diamond is cut too deep or too shallow it will leak light and not be as brilliant. good or better, ensuring that your stone will not leak light, but reflect it beautifully.