A team of female cadets takes part in a tug-of-war competition at Budyonny Military Academy of the Signal Corps in St Petersburg, Russia on March 7, 2021. (Photo by Peter Kovalev/TASS/Profimedia)

A woman and a girl in a school uniform run past a barricade of burning tires during a demonstration against high prices and fuel shortages, in Port-au-Prince, Haiti on October 21, 2021. (Photo by Ralph Tedy Erol/Reuters)

Armed police officers and soldiers strengthen their training in seawater in Fangchenggang City, Guangxi Province, China on July 24, 2023. (Photo by Costfoto/NurPhoto/Rex Features/Shutterstock)

Rachel Hollon of Los Angeles was body painted as Harley Quinn at Comic-Con International in San Diego, USA on Jule 20, 2017. (Photo by K.C. Alfred/San Diego Union-Tribune via ZUMA Press/Rex Features/Shutterstock)

French photographer Bettina Rheims poses next to her work, two days before the opening of her exhibition “Pourquoi m'as-tu abandonnée ?” (Why did you abandon me?) at the Museum of Photography Charles Negre, in Nice on June 13, 2024. (Photo by Valery Hache/AFP Photo)

A woman poses for a photo shoot with the blossom flowers decorated at Ritan Park during the Spring season in Beijing, Sunday, March 30, 2025. (Photo by Andy Wong/AP Photo)

A media member looks at a humanoid robot portraying the Qin emperor Qin Shi Huang, during an organised media tour to Robot Mall, a store selling humanoid and other robots, in Beijing, China on August 6, 2025. (Photo by Florence Lo/Reuters)

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.