Hawaii, USA, <a href="https://en.wikipedia.org/wiki/Papakolea_Beach" class="extiw" title="en:Papakolea Beach">Papakolea Green Sand Beach</a>, handful of sand including many <a href="https://en.wikipedia.org/wiki/olivine" class="extiw" title="en:olivine">olivine</a> crystals that are responsible for the greenish hue of the beach.
<a href="//commons.wikimedia.org/wiki/User:Brian_W._Schaller" title="User:Brian W. Schaller">Brian W. Schaller</a>
FAL
<span class="int-own-work" lang="en">Own work</span>