neatfreak
Super_Ideal_Rock
- Joined
- Feb 17, 2007
- Messages
- 14,174
Date: 10/21/2008 1:53:42 PM
Author: Stone-cold11
Note that GIA and AGS grades stone with the primary aim of the ring stone, so the ideal range is always in the range of the younger person ring stone range.
In the case of the 1 example, it is simply the case of GIA having too large a range of what it consider an excellent stone.
In the 2nd case, although HCA score a 1.8, it says the stone is in the FIC range, not TIC, you can see the cross is outside of the AGS ideal bound and GIA excellent bound. GIA and AGS stones are all in the TIC range only. TIC gives the best compromise between brightness and fire in the stone. And FIC sacrifice some light return for fire and usually has a deeper crown, so less spread of the weight.
But some people love FIC's (like me!) because they show a lot of fire, which is a consideration as well. Don't reject it just because it's an FIC, only reject if it your eyes prefer a different combo.