Extra Large Vintage Mimi & Marge Sterling and Crystal Statement Ring.
I bought this stunning ring from the Mimi & Marge design office in the 90s -
it was part of a sample sale, and you will never see another one like this.
The ring and setting are solid sterling silver. 
The ring is very large - the top of the ring including the setting and the crystal
measures 13mm wide by 14mm long. 

The ring weighs 18 grams and fits ring size 6.5 to 7.

Rings with wide bands usually require a half size up from your usual size.
Don't hesitate to ask if you have any questions!