NICE RETRO piece and the ZIRCON is incredible. ZIrcon is GORGEOUS and in a RARE Emerald Cut and VIVID BLUE. Stone: Blue Zircon & Diamond.Metal: 10 KT White Gold. Gram Weight: 4.7 grams. Powered by SixBit's eCommerce Solution. The item "Antique 1940s RETRO $6000 12ct Natural Blue ZIRCON Diamond 10k White Gold Ring" is in sale since Friday, February 16, 2018. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.