Learn · Diamonds
Fancy shapes and the bow-tie
Choose a shape, stretch it and change its depth. The face-up map follows real light paths through the facets to show where the stone is bright, where your own head darkens it, and where light escapes.
Choose a shape, then stretch it and change its depth; the map shows where light returns and where it escapes.
Six-prong solitaire, taken apart
A solitaire ring in 3D: its parts, and how proportions change the cut grade
Diamond colour, D to Z
One diamond moved along the D-to-Z colour scale, face-up and in the grading tray
Diamond clarity map
Every clarity characteristic GIA defines, inside a diamond you can turn
Diamond fluorescence
None to Very Strong under the lamp, and what research found about daylight
Lab-grown, step by step
How CVD and HPHT diamonds are grown, step by step, and how labs tell
How to read a lab report
Each part of a laboratory report explained, on an example report