A man and a dog bathe in a fountain during celebrations of Paratroopers' Day in Moscow' s Gorky Park on August 2, 2017. Russia' s Airborne Troops (Blue Berets) celebrate their professional holiday on the Day of Elijah the Prophet, their Patron. (Photo by Stanislav Krasilnikov/TASS)

American model Lori Harvey attends the Tiffany & Co. Celebration of the launch of Blue Book 2024: Tiffany Céleste at The Beverly Estate on April 25, 2024 in Beverly Hills, California. (Photo by Stefanie Keenan/Getty Images for Tiffany & Co.)

Boozed-out revellers donned fancy dress as they welcomed in the Bank Holiday at the Otley Run. Hundreds swarmed Leeds, UK on Saturday, March 30, 2024, as the infamous tipple mission got underway beneath blue skies and sunshine. (Photo by NB Press LTD)

“Kissing Booth” star Joey King (in blue wig) and “Game of Thrones” alum Maisie Williams laugh it up while enjoying a night on the town full of shots and karaoke in the second decade of September 2025. (Photo by Joey King/Instagram)

This November 11, 2014 aerial photo, shows a deforested area dotted with blue tarps, marking the area where miners reside, and craters filled with water, caused by illegal gold mining activities, in La Pampa, in Peru's Madre de Dios region. Less than a month before Peru plays host to global climate talks, the government sent a battalion of police into southeastern jungles to dismantle illegal gold-mining mining camps. Peru's anti-illegal mining czar, retired army Gen. Augusto Soto, marched the men to the wasteland known as La Pampa, where 50,000 hectares of rainforest have been obliterated in the past six years. (Photo by Rodrigo Abd/AP Photo)

Tony North; First place, Breathing Spaces; Overall Winner; Blue Tajinaste, La Palma, Canary Islands, Spain. “Echium thyrsiflorum is endemic to the mountains of La Palma island – from high up, there was a magnificent view of both the caldera below, and the stars above. The Unesco La Palma biosphere reserve encompasses the entire island, with the Caldera de Taburiente containing mountains with a highest peak of 2,426 metres – the Roque de los Muchachos”. (Photo by Tony North/IGPOTY)

There is an endless bounty of eye-catching gemstones throughout the world and this spectacular boulder opal is one unique beauty that looks like a shimmering crystal encased in a tree fossil. Its opalescent sheen seeps through the cracks of the seemingly wooden rings in lustrous hues of emerald green and aqua blue. Like something out of a fairy tale, the triangular piece radiates through an organic pattern mimicking the growth rings of tree.

“In anatomy, heterochromia refers to a difference in coloration, usually of the iris (but also of hair or skin). Although infrequently seen in humans, complete heterochromia is more frequently observed in other species, where it almost always involves one blue eye”. – Wikipedia (Photo by StooMathiesen)