Large Chunky AMBER Sterling Silver 925 Gemstone RingA smart chunky natural green Amber statement ring set in a stylish Sterling Silver design. Size of Amber: 22 x 26 mm. Weight 13. 8 g. Ring Size: UK AUS P; USA 7. 5. Gemstone for the Zodiac sign of Cancer Amber is technically not a gemstone or mineral, but a fossilized sap from prehistoric trees that has aged over the course of millions of years. Amber is usually thought of as yellow golden in hue, but amber also can be found in shades of milky white,