Jewelry made of ruthenium-plated 925 sterling silver with green Siamite®. Size: standard size 14, adjustable by 2-3 points. Siamite®, is an innovative material-glass-ceramic composite-designed and manufactured through the most modern methodologies in the industry. Unlike most synthetic stones, it has unique technical characteristics, including exceptional resistance to extremely high temperatures and the ability to be found in more than 500 different colors and a varied number of cuts.