Article · 10 min
Why do depth and table percentages change a diamond’s sparkle?
Why your diamond report lists these numbers Why would a laboratory measure your diamond so precisely? Because sparkle depends on where light goes after…
Diamonds · Learning pillar
Cut & Light Performance
Cut is the characteristic that most affects how a diamond looks, yet it is the least understood. This pillar explains how proportions and finish turn light into brightness and sparkle, what the cut grades mean, and how brilliance, fire and scintillation differ. Read Diamond Cut Explained first, then Brilliance, Fire and Scintillation, and use the 4 Cs overview for context on how cut trades off against the other grades.
Guides in Cut & Light Performance
Article · 10 min
Why do some diamonds show a dark bow-tie effect?
Why a dark band in your oval diamond may not be a flaw You’ve found an oval diamond you like, but there’s a dark…
Article · 9 min
Why light performance matters: diamond cut explained
Why cut is said to matter most of the 4 Cs Have you been told that cut is the most important of the 4…
Article · 9 min
Why does a diamond sparkle? Brilliance, fire and scintillation
Why a diamond’s sparkle needs three words: brilliance, fire and scintillation Why would a jeweller use three different words for one sparkle? Because a…
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