COACH RING- NWT, Sz 7 Cushion Cut Bluish/Green Stone w/3 Inlays on Each Side

COACH RING- NWT, Sz 7 Cushion Cut Bluish/Green Stone w/3 Inlays on Each Side. I don’t know much about this ring. It only has two stamps- one reads COACH-inside bottom center of ring & CHINA inside-directly behind center stone. I can’t identify the stones, but they’re pretty & with the same stones on each side, they make this ring work. There is no marking of the metal material. Stone Measurements: Center Stone- Width 1cm, Height 1cm Side Stones: Width .3cm, Height .5cm each. Total of 6- 3 inlaid stones on each side. Having it for a number of years, it has never tarnished at all so it can’t be Silver; prob. Stainless Steel? I will be listing many of the way too many jewelry pieces I’ve collected over the years- a few fine jewelry pieces with Tanzanite/Diamonds -2 rings & a matching pendant/chain Natural Ruby-60ct+ & smaller Ruby 💍 15ct surrounded by White Sapphires. Several David Yurman, John Hardy, MK are listed. Lots of pretty Fashion Jewelry-all kinds- I’ve acquired. Please check my closet starting in about 2-3 weeks as I will be listing a number of pieces- hopefully everyday for as long as it takes. I’ll admit I’m slow when it comes to listing, I spend too much time taking & editing photos & writing too much in my descriptions. I do give all the info you need to make an informed decision, and then some…🗣️😵‍💫 Any questions please leave in the comment section & if you happen to know the name of the stones in this ring, I’d love to know!