Ring Ellera Quadrato by Sif Jacob.
Green Ring: made of 18 karat gold plated 925 Sterling silver, polished surface, and hand set with facet cut green zirconia. 
Size 6.75
Clear Stone: Ring made of 925 Sterling silver with rhodium, polished surface, and hand set with facet cut white zirconia.
Size 6.75
Ring measurements: Height 6 mm, width 6 mm, thickness 4,5 mm