The original Tolkowsky ideal proportions have been refined; A CUT ABOVE® diamonds represent a very narrow subset of the GIA 'Excellent' cut grade category, prioritizing exceptional light performance over the commonly favored carat yield.

Tolkowsky round diamonds are guaranteed to score a minimum of three “very high” ratings for SI2 solitaires and two “very high” ratings for SI1 bridal and studs in the measurements of brilliance, fire and sparkle in a report by GemEx, an independent scientific laboratory that specializes in measuring diamonds' light ...

Tolkowsky's Diamond Design suggests that a round brilliant cut diamond will be most brilliant when cut to a total depth of 59.3% with a table diameter of 53% and a crown angle of 34.5 degrees, with a pavilion angle of 40.75 degrees, and a zero percent girdle, which is essentially impossible to produce, because it would ...

Kays diamonds are almost exclusively IGI certified; on average an IGI certified diamonds come in around three grades higher than their GIA equivalent.

We set high standards for our jewelry sourcing - whether natural or lab-created, 100% of our diamonds are conflict-free. Check out more reasons to choose KAY here. All lab-created diamonds are independently certified for color, clarity, cut, and carat weight.

Tolkowsky designed the traditional 58 facet round brilliant diamond. Leo Schachter branded the 66 facet round brilliant as the Leo Diamond in 1999. Having 8 more facets than the traditional 58, found in the bottom half of the diamond, Leo Diamonds are deemed a “modified round brilliant” cut diamond.

They are considered to be one of Sterling Jewelers' premium brands, however while the prices are certainly on the premium end of the jewelry spectrum, the quality of their diamonds is well below par.

Hands down, moissanite is the number one alternative when it comes to the best fake diamonds for a number of reasons.

All diamonds are “real” or genuine. This includes both diamonds mined from the ground and diamonds grown in a lab. Otherwise, a fake diamond is actually a simulated diamond, also called an imitation. Therefore, all diamonds are real diamonds regardless of their origin.

The most expensive diamond cut is the round brilliant And it's not just because it's the most in-demand: The round brilliant has the most facets of any shape, which require more precision work, and cutters have to discard more of the rough diamond, so you essentially pay for a larger stone than you end up with.

Kays diamonds are almost exclusively IGI certified; on average an IGI certified diamonds come in around three grades higher than their GIA equivalent.

Natural diamonds are incredible works of nature and the traditional choice. Whether natural or lab-created, all of KAY's diamonds are 100% conflict free.