C. 1990. Our Estate collection is filled with fanciful treasures, waiting to spark joy. Just take a look at this colorful ring, flaunting a … C. 1990. Our Estate collection is filled with fanciful treasures, waiting to spark joy. Just take a look at this colorful ring, flaunting a quartet of 1.40 ct. t.w. oval green, blue, pink and yellow sapphires sparked by .75 ct. t.w. round diamonds in 14kt white gold. Crafted in polished 14kt yellow gold with a stacked, multi-row design. 5/8" wide. Diamond and multicolored sapphire ring. Exclusive, one-of-a-kind Estate Jewelry.