C. 1990. Here's a fierce find, straight from our Estate collection. On this ring, a panther is ready to pounce, crafted in satin and polishe… C. 1990. Here's a fierce find, straight from our Estate collection. On this ring, a panther is ready to pounce, crafted in satin and polished 18kt yellow gold. Fiery .35 ct. t.w. round brilliant-cut diamonds are dotted throughout, with vivid green emerald eyes to finish the look. 1/2" wide. Diamond panther ring. Exclusive, one-of-a-kind Estate Jewelry.