In this amazing close-up we see a beautiful opal from Yoawh, Queensland, Australia. The length of this polished opal is a mere 20 mm but its features are gorgeous. The opal is a part of the Willems Miner Collection.
The annual National Geographic Photo Contest is well under way. Every year photographers from around the globe share photographs that transport us to another place, connect with us emotionally, or stir us to action.