Hurlbert/ NMNH, SI You start with the stone, aquamarine, a word that means ... but the soft blue-green of a lagoon on a clear tropical morning. Chemically, it is almost identical to an emerald.

so aquamarine is relatively hard and will withstand daily wear. The clear nature of this gemstone lends itself nicely to ...

The water is a stunning aquamarine, crystal-clear, and free from algae or jellyfish. It’s perfect for snorkeling with kids, as the calm, wave-free waters are safe and filled with tiny fish.