- Joined
- Aug 15, 2000
- Messages
- 18,845
I lost it a few times when proportion recommendations were very narrow. The seem to have been based on super ideal branded #'s.
(I am not intending this as guide for those companies - if you are buying from our esteemed branded vendors you do not need HCA or guides like these)
So I thought it would be good to put together a chart to help helpers of newbies.
These are no way final numbers and everything is open to debate and discussion.
This may not even be the best way to present such info.
I have left off depth % - we can debate it - but my PoV is that a VG Tolkowsky with a thick girdle is a great way to get a 1ct RBC and save some money - and apart from a small diameter it makes little difference to the beauty of the diamond.

When I imported the table it messed up a bit:
(I am not intending this as guide for those companies - if you are buying from our esteemed branded vendors you do not need HCA or guides like these)
So I thought it would be good to put together a chart to help helpers of newbies.
These are no way final numbers and everything is open to debate and discussion.
This may not even be the best way to present such info.
I have left off depth % - we can debate it - but my PoV is that a VG Tolkowsky with a thick girdle is a great way to get a 1ct RBC and save some money - and apart from a small diameter it makes little difference to the beauty of the diamond.

When I imported the table it messed up a bit:
Visual type: | Less fire Bright | More Brightness | Bright balanced | All round (Tolkowsky) | Firey Balanced | More Fire & scintillation | |
Crown Angle | 31°- 32° | 32°- 33° | 33° - 34° | 34° - 35° | 35°- 36° | 36. 5° | |
Pavilion Angle | 41.4° | 41.2° | 41.0° | 40.8° | 40.6° | 40.5° | |
< Risk chipping in rings Suggested Table size range for Carat Weight Small for weight > | |||||||
< 0.50ct | 55-61% | 55-61% | 55-61% | 55-61% | 55-60% | 55-60% | |
0.50 – 0.99ct | 58-60% | 58-60% | 55-60% | 55-60% | 55-60% | 55-60% | |
1.00-1.99ct | 57-60% | 57-60% | 54-59% | 54-59% | 54-59% | 54-59% | |
+2ct | 56-59% | 56-59% | 55-58% | 54-58% | 54-58% | 54-58% | |
Best for: | Earrings and Pendants | Bigger Spread – Rings – Smaller Spread |
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