Russian Chrome Diopside 10Kt Y. Gold 2ct Ring sz.7 Russian Chrome Diopside is the color and clarity of the world's very best emerald. Because of the weather, this kelly green stone can only be mined 3 months a year, in Siberia. Several years ago that one and only mine flooded. The mine has not, as of late 2014 reopened. Like Tanzanite, this gemstone may well be a one generation stone. Here today gone tomorrow. This ring is a full 2 carets. The center stone is 1 full ct, the 2 side stones are ½ ct each. There are 2 tiny diamonds on each side of the band. The gold is 10 kt and is marked on the band. The ring is a size 7. This is a lovely ring and sure to become a family heirloom.