AMBER Sterling Silver Gemstone PendantA smart one off natural Amber pendant set in a stylish Sterling Silver design. Size of Pendant: Width 23 mm; Total Length 38 mm. Weight 10. 4 g. 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, red orange, green, black and even (very rarely) violet.