Hello everybody! I tend to go over my manuals when things slow down to keep my skills sharp and in searching haven't been unable to come up with the answer to a very basic question: Lets say i'm measuring melee in a cluster ring that has stones that aren't precisely the same size. How much variance can there be between stones before i must individually document each stone instead of grouping them and using the average size? Thank you in advance!
Post subject: Re: Grading common sized melee in appraisal
Posted: Fri Mar 31, 2023 3:34 pm
Site Admin
Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
This is what I would do. The sapphire is surrounded by 30 full cut diamonds, varying in size from 1.5 to 1.75mm, for an approximate total weight of 0.52 carat.
The Deco brooch is diamond-set. Diamond Description Quantity: 120 total Measurements: 25: 2.4mm.....1.25 cttw 13: 3.0mm.....1.30cttw 46: 2.0mm......1.08cttw 36: 1.25mm....0.36cttw
Total diamond weight:4.71 cttw (calculated approximation)
This is what I would do. The sapphire is surrounded by 30 full cut diamonds, varying in size from 1.5 to 1.75mm, for an approximate total weight of 0.52 carat.
The Deco brooch is diamond-set. Diamond Description Quantity: 120 total Measurements: 25: 2.4mm 13: 3.0mm
A wonderful explanation. An emphatic thank you goes to you Barbra!
For myself I usually go by the small variances that might be found in diamond packages. So for example if you have a diamond that is supposed to be 2.0 mm you'll probably get diamonds in the 1.9 - 2.1 mm range in most cases. I've usually found they put a 0.2mm variance for most packages of stones so I use that as a rough guide for myself.
A recent one I had of course pushed that to the limit a little as they had graduating diamonds in a ring ranging from 0.8 mm to 3.4 mm but thankfully it wasn't every 0.2mm that it went up in graduated sizes.
Just my 2 cents on the subject anyway. As long as it's accurately labelled and the estimated weight is as accurate as you can get then up here in Canada they don't have any rules on what the variance allowed should be.
Users browsing this forum: No registered users and 15 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum