quaeritur
Brilliant_Rock
- Joined
- Mar 12, 2004
- Messages
- 1,238
I''ve been running stones thru the HCA for months now, in the quest for my perfect diamond. Today, I realized that I''m not sure how to interpret part of the clarification under the HCA chart:
"The red area on this chart represents the lowest HCA scores.
Stones near the center of the red region, those with the lowest scores, are often the least affected by small symmetry variations.
A shallower stone, on the lower part of the chart, will look darker when viewed from close up, they are not for everyone. Shallow stones have the advantage of a bigger spread. They are better suited for use as pendants and earring stones where they are not usually viewed from very close proximity (a close observers head obstructs light sources that would otherwise be returned).
Deeper proportioned stones, near the upper part of the red area, have more leakage. Leakage means reduced light return.[etc.]"
I think this means that a shallow stone would be along the bottom of the entire chart, as opposed to along the bottom of the orange/red area. Is this correct?
Thanks,
"The red area on this chart represents the lowest HCA scores.
Stones near the center of the red region, those with the lowest scores, are often the least affected by small symmetry variations.
A shallower stone, on the lower part of the chart, will look darker when viewed from close up, they are not for everyone. Shallow stones have the advantage of a bigger spread. They are better suited for use as pendants and earring stones where they are not usually viewed from very close proximity (a close observers head obstructs light sources that would otherwise be returned).
Deeper proportioned stones, near the upper part of the red area, have more leakage. Leakage means reduced light return.[etc.]"
I think this means that a shallow stone would be along the bottom of the entire chart, as opposed to along the bottom of the orange/red area. Is this correct?
Thanks,