I've been doing some more light reading on the finer details, flavours, and characteristics of what can be found in a diamond.
I've identified the differences between AGS reported LGF Depth vs GIA LGF Length, their typical ranges, and how their variances impact on the pavillion size, seen as the arrow in certain lighting environments.
I've read that ranges for the star generally vary between 45-55% and also work in conjunction with the upper girdle. Variances not only change the window through the star, but also the angles of the facets (which are also dependant on the crown angle).
I'm not sure how the lower half % or even total depth of the diamond influences the relationship. IE, will a 75% LGF present as thicker/thinner arrows on a 43% lower half, vs a 43.5% lower half?
I've read certain combinations can also result in obscuration issues. Do we have any examples of this?
I've also come across the topic of some ideal cut diamonds appearing dark in full light environments. Is this more likely to occur with shorter LGFs rather than longer?
I've identified the differences between AGS reported LGF Depth vs GIA LGF Length, their typical ranges, and how their variances impact on the pavillion size, seen as the arrow in certain lighting environments.
I've read that ranges for the star generally vary between 45-55% and also work in conjunction with the upper girdle. Variances not only change the window through the star, but also the angles of the facets (which are also dependant on the crown angle).
I'm not sure how the lower half % or even total depth of the diamond influences the relationship. IE, will a 75% LGF present as thicker/thinner arrows on a 43% lower half, vs a 43.5% lower half?
I've read certain combinations can also result in obscuration issues. Do we have any examples of this?
I've also come across the topic of some ideal cut diamonds appearing dark in full light environments. Is this more likely to occur with shorter LGFs rather than longer?