Trade Resources

Diffraction grating is a new, proprietary and patented nanotechnology cutting technique that was developed at Cal Tech University. While maintaining the integrity of the diamond, with regard to the 4 C’s, it breaks the white light into its spectral colors, thus adding fire and dispersion to any round diamond. There is no change in color, no change in brilliance, no change in clarity, and no measurable weight loss. The additional faceting does not change any of the pre-existing angles of the diamond. This is not a coating or a treatment; it is adding permanent diffraction gratings on the pavilion of diamond which enables the fire in the stone to be released.

I had a well known color dealer (not on Poly) tell me today that traces of flux in a heated ruby is an expected and standard treatment. Since answers may depend on the level of flux found, I am referring to a GIA comment of TE2.

People understand that, most of the time, they do not get what they paid when they resell. I had a guy in last week telling me he’d be happy to get $500 for a ring but was paid $650. He was thrilled to be paid more than he expected and I was happy to be fair with him. Buying is another service to our clients. If they did not feel they were treated fair they would not come back to buy from me. And they do.

After resisting for many years, I was again exploring whether or not to take on some more big name jewelry lines. I come from the background of a coin/pawnbroker/auctioneer and in general don’t like overpaying for anything. Yet, I see the huge billboards of my competitors who have lots of fancy name jewellery and watches.

I think it is prudent to check EVERYTHING marked 925. You’re not convinced, read on. I had a flea market guy come in this morning with a dozen or so rings marked 925. I waived the magnet over them and other silver stuff he had a five rings were mildly attracted to the strong magnet. I tested them on the black stone and all five were silver plated. I then tested the rest that weren’t attracted to the magnet and four of those had no silver.

The owner of a store I visited years ago did $88,000 in remount business over 3 days. How did he do it? By giving away old gemstones. Here is his story. Like most bench jewelers, he bought a lot of color. He also had over eighty semi-mounts and rings from which he had taken out the centre stone and was left with just the mountings.