$These stones are vintage Russian CZ that we used in the video below to fool jewelers. They sold in our Las Vegas and Beverly Hills store for much more. This is a 10 ct extremely brilliant ideal cut round stone mounted in sterling silver with extra thick finish of 14kt yellow gold that will last. The bale can accommodate larger chains. The opening is 6mm by 5mm. This pendant looks ten times better than the picture or your money back. These pendants are brand new, made over 25 years ago and will remain brilliant for 100's of years. They retailed for $600.00 plus in the 1980's. My parents made them for TV shows and movies. (Rich was the look then, now it's bling! bling!). See the video below to fully understand the quality of our gems. Better than today's CZ’s, better than Moissanite.