Vintage sterling silver cluster ring set with 7 bright red coral stones. It is a size 6.5 and the face is 1 3/16". Weight: 9.2 grams. Silver is tarnished. Hallmarked TKW which is the marked of Tim Kee Whitman, Navajo.

 Inside the back of the band I see some copper. The band is made of two bands soldered together. I acid tested this all over and got positive for 925 sterling silver every time. The copper may be from the solder as it runs down the center of the band. 

Weight: 9 grams.