The rich tones of amber flow like warm honey into the shining elegance of silver. Olga Hinojosa is inspired by nature's uncultivated beauty and works with the natural shape of amber, creating an imaginative ring for the refined wardrobe. .925 Sterling silver.When used in jewelry, amber beads can include a stunning arrangement of tones and hues. Natural amber ranges from yellow to deep orange. It may sometimes even have a green cast to it, as well as opaque swirls within. Because amber is the preserved resin of prehistoric trees that grew millions of years ago, it sometimes has tiny inclusions of plants and insects -- making it highly prized.