I've recently purchased 2 loose diamonds online. The sarin reports were also posted at the vendor's website. The first one had a HCA score of 1.2 and the second one a score of 1.3. Both were rated "excellent" on light return, fire, and scintillation except for "very good" on spread. However, when I received the diamonds today and reentered the enclosed specs from the Sarin Report, the scores were different. The first one now scored 1.9 and the second one scored 2.0. The HCA now tells me that both stones rated "very good" in fire, scintillation, and spread except for excellent in light return.
I know there's a 0.5 variation (is that correct?) when a Sarin report is rerunned. However, the first Sarin report is provided by the same online company. (I have it somewhere at work--I'll have to dig for it tomorrow. ) Meanwhile, I'm not so sure why there's a variation in the HCA score. Please advice me and let me know if I have any reasons to be concerned. I have 10 days return policy.
I know there's a 0.5 variation (is that correct?) when a Sarin report is rerunned. However, the first Sarin report is provided by the same online company. (I have it somewhere at work--I'll have to dig for it tomorrow. ) Meanwhile, I'm not so sure why there's a variation in the HCA score. Please advice me and let me know if I have any reasons to be concerned. I have 10 days return policy.