C. 1980. A burst of cosmic color. From our Estate collection, this sputnik-style cluster ring features a stunning mix of 3.40 ct. tot gem wt… C. 1980. A burst of cosmic color. From our Estate collection, this sputnik-style cluster ring features a stunning mix of 3.40 ct. tot gem wt. aquamarine, citrine, garnet, amethyst and blue, pink and green tourmaline -- all glowing in pronounced raised settings of polished 18kt yellow gold. 3/4" wide. Multi-gemstone sputnik ring. Exclusive, one-of-a-kind Estate Jewelry.