14k Italy Emerald Cut Aquamarine Bracelet With Circle Hallmark, Aquamarine is a member of the Bery. family of gemstones. The hue of the gemstone varies from light blue to deep blue. An exquisite and costly jewel, aquamarines are also sold by certain vendors as glass and imitation or synthetic stones. Fortunately, there are several methods for confirming aquamarines’ genuineness.