Learn · Diamonds
Six-prong solitaire, taken apart
Rotate the ring, explode it into its parts and tap a part to learn what it does. Then change the diamond's proportions and symmetry and see how GIA's published standards treat them.
Drag the ring to turn it; tap Explode to take it apart, then tap a part or change the proportions below.
Read the guide
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
Fancy shapes and the bow-tie
Stretch a fancy shape and see where light leaks and the bow-tie appears
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