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diamondandjewellery

From Rough To Cut Diamonds

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Hello there.

 

I was wondering if a rough diamond will always have an optimal cutting mode ( = the most efficient way to cut a rough diamond, whitout loosing to much weight) or will the rough diamond be cut in function of the dealers demand/supply.

or

Will most cutters agree about the cutting of a specific rough diamond.

Many thanks for your response.

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Yes, there is an "optimal" cut based on what you want to get (and the characteristics of the rough), but what you want to get varies as a function of demand/fashion. In the 1980s, marquises were fashionable; now they are difficult to sell - but also relatively difficult to find: there's over 150,000 round cuts advertised for sale on the Diamond Finder, but only about 11,000 marquises.

 

Also, what is "optimal" will depend on the cutter's specific market: is a 2.35 ct I/SI2 easier to sell than a 1.75 H/VS2 for my retailers?


Davide - Specialised Consumer Information and Assistance,
Diamonds by Lauren (http://www.diamondsbylauren.com)
davide@diamondsbylauren.com

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BASICALY IF I UNDERSTOOD WELL YOU ARE WONDERING WHICH TYPE OF POLISHED DIAMOND REQUIRES LESS CUTTING FROM ITS ROUGH STATE

I BELIEVE THAT IT IS THE RADIANT TYPE WHICH ALWAYS GIVES A POLISHING GOOD FROM 0.52-0,60% OF THE INITIAL ROUGH OCHTAHEDRON SHAPE

ALSO ANOTHER TRICK THAT CUTTERS MAY DO IN ORDER TO GAIN LITTLE MORE WEIGHT IS TO POLISH THE ROUGH DIAMOND WITHOUT CULLET THAT WILL INCREASE THE WEIGHT OF THE FINISHED DIAMOND AROUND 5%BUT THIS WILL BE SPOTTED BY GIA SPECIALISTS FOR SURE..

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Hello there.

 

I was wondering if a rough diamond will always have an optimal cutting mode ( = the most efficient way to cut a rough diamond, whitout loosing to much weight) or will the rough diamond be cut in function of the dealers demand/supply.

or

Will most cutters agree about the cutting of a specific rough diamond.

Many thanks for your response.

No.

 

The way to have the least weight loss is to avoid cutting it at all, which also minimizes the cost of the cutter by the way. Usually that doesn't meet the other objectives. What drives the cutting industry is MONEY. The job of a cutter is to take a particular piece of rough and produce a finished stone that sells for as much as possible and as quickly as possible. Sometimes that's about maximizing optics, sometimes it's about maximizing weight, sometimes it's about cutting something out of the stone and sometimes it's about keeping something IN the stone. Sometimes it's just about holding down costs. Obviously, at the end, it's necessary to produce a stone that actually sells, which brings in the demand/supply issues. It isn't the same for every stone or even every cutter. It's a far more complicated question than I think you are imagining.


Neil Beaty

GG(GIA) ICGA(AGS) NAJA

 

There's never a crowd when you go that extra mile.

Professional Appraisals in Denver

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