A galaxy of color surrounded by glittering, starry diamonds! This incredible 20 carat opal boasts the richest, most luminescent array of colors this gem is known for. This fine piece deserves to be shown off, and luckily, it can be worn two ways! Behind the gem is a sophisticated mechanism that allows a band, for wear as a ring, to be attached or removed. This hidden clip includes a bale so when the band is removed, the piece can be easily strung onto a chain and worn as a pendant! Handmade in platinum the 1970s, this fine opal bauble features nearly four carats of diamonds! Marquis cut diamonds totaling 2.88 carats skirt around a halo of brilliant cut diamonds totaling 1.08 carats. They are all finely matched near colorless G grade and VS clarity grade diamonds. The opal's carat weight is written on the shank, 20.02. We are proud to offer this special piece at a fraction of its retail value of $22k! The ring is currently a size 7 and may be easily resized up or down upon request. It measures about 1 1/8 inch by 7/8 inch and about 1/2 inch thick/tall.