Sterling Silver and Trillion cut tanzanite women's ring 6.5

Having for sale this beautiful women's ring Trillion cut Tanzanite and CZ ring. I believe the size is 7. my middle finger size is 7 and I used to wear it on my middle finger. When i bought the ring i was told that the main stone was tanzanite, never care to get it tested because looks very pretty anyway. please check pictures as they are part of my descriptions. Thank you for watching.