Diamond science
Antique Diamond Cuts
Antique cuts
An antique cut does not imply "old." In fact, most "antique" stones have bee...
A Complete Guide to Diamond Certification
A Complete Guide to Diamond Certification
Leon Mege is an honest jeweler. We offer only G...
True Antique™ Cushion Cut
What makes a True Antique™ Cushion Diamond so exclusive that just a handful of them are cut ever...
HCA Trap
HCA score calculator is a dumbed-down version of a diamond cut evaluation: a highly subjective opi...
ASET scam
ASET test is a scientific breakthrough, but a sales gimmick of the worst kind.
ASET "test...
Diamond Cut
Ideal Cut
The most important criterion of the cut is the ratio of the stone's depth to its diam...
Swords and Shields
Swords and Shields
Regarding the use of the term Hearts and Arrows:
The hearts and arrow...
Fluorescence
Fluorescence
Some diamonds emit a soft-colored glow when subjected to ultraviolet light ("blackli...
Diamond Color
Color
The less color a diamond has, up to a certain point, the greater its rarity and value. Ma...
Diamond Clarity
Clarity
Clarity refers to the presence of inclusions and blemishes in a diamond. Since a diamond ...
Diamond Side Stones
These stones rarely have any other purpose in jewelry but to flank a stone in a three/five stone rin...
Modern Diamonds
Emerald Cut
The supreme elegance of an emerald cut cannot be disputed. Its clean lines come from ...
Diamond Math
Diamond Math: 4Cs + Confidence = Five Cs
As a creator of the 4C's - internationally and u...
Diamond "Blood" Types
Diamond "Blood" Types
Just like a blood type for humans, diamonds have 4 distinct groups based ...
Diamond Carat Weight
Carat, Not Karat, Not Carrot
Diamonds are weighed on a carat scale (not to be confused with Kar...
Carbonado
Carbonado
A “Black Diamond” is a natural polycrystalline aggregate of minute graphite and...
