David S. Atlas 2/10/2007 I love fine gems, well cut diamonds and quality jewelry. Please don’t shoot the messenger, as I have bought, sold, owned and appraised countless millions of dollars worth of these beautiful things since 1967 when I entered the jewelry trade. I’ve been fortunate to have made a decent liv...
Fine jewelry settings are created from precious metals. This article addresses some important information about gold, white gold, rhodium plating and nickel allergies, as well as covering fine distinctions between common platinum alloys. Many alloys exist and new ones are constantly being developed. Here is an overv...
An Overview Of Common Alloys Used In Jewelry CLICK HERE TO VIEW POST
This article shows an interesting effect of dispersion whereby color components are progressively diverted from the spectrum, as in 'fractional distillation' or 'fractional crystallization' of liquids. White Light & Rays White light is composed of combined colors; different colors can be combine...
With grateful acknowledgment to John Pollard, Sergey Sivovolenko, AGSL and GIA Laboratories for valuable resources and input. Graphics produced with DiamCalc software by OctoNus. Note: This article pertains only to 'superideal' diamonds, meaning those with commonly agreed 'ideal' proportions and a high level of o...
Visible Effects of Painting & Digging on Superideal Diamonds CLICK HERE TO VIEW POST
Coming back from holidays, and trying to catch up with Pricescope, I saw a lot of discussion and agreement about diamond-cutting being an art, and hence diamond cutters to be artists. At first, I felt like I had to disagree with this notion. I consider ourselves not to be artists, but craftsmen, designers if y...
Can diamond-cutting be considered Art? CLICK HERE TO VIEW POST
Labs grading mistakes are a diamantaires favorite topic of conversation; are mistakes myths or reality? We aim to find out. If major labs give the same diamond 2 or more grade differences, this is more than a borderline difference of opinion. We want your help to find examples (like this one). We will send ston...
Diamond Grading Labs – A Plan for Peer Review CLICK HERE TO VIEW POST
When one looks for solutions to problems it is best to look for the simplest possible one. There may be more than one legitimate way to solve a problem or to accomplish a task, but the simplest method that does the job correctly is the one to ultimately choose. It is not wrong to try various methods, but when it com...
Making the case for Imagem diamond grading CLICK HERE TO VIEW POST
Diamonds should be a blessing to all they touch, from the mine to the consumer, and everyone involved in the chain should be doing their best to insure that this happens. For the most part, they are. Diamonds and the related industries continue to provide a living for hundreds of thousands of people in Africa, India...
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