Quartz crystal 8 mm long with gas-liquid inclusions of carbohydrates from the little-known Alatau mine, Southern Urals. Under 405 nm UV light, inclusions of different composition are clearly visible: large bubbles glowing in a greenish-blue color, and small droplets glowing in a yellowish-orange color.
<a href="//commons.wikimedia.org/wiki/User:Boris_Lobastov" title="User:Boris Lobastov">Boris Lobastov</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>