Gemstones have never ceased to amaze us with their vibrant colors and unique characteristics. Depending on how and where they're formed, types of crystals can look entirely opposite one another–like they exist on different planets. In the case of the Boulder Opal stone, it resembles an iridescent crystal bursting out of a weathered wood fossil. This eye-catching gem has swirling hues of aqua blues, emerald greens, and flecks of red that are as fiery as lava.
Originating in Australia, Boulder Opal is composed of two parts: the host rock, which is usually an ironstone or sandstone, and a precious opal. It's formed when the silica compound has water in it, penetrates the rock, and deposits opal in the cracks. According to the online gem retailer Treasurion, “The types of rocks that host Boulder Opal are very hard and spaces available for opal deposition are thin and randomly distributed.” That's why some appear more glittery and lustrous than others.
Although the Boulder Opal formation is a difficult one, the contrast of the brown host rock and bright colors has a stunning effect–it's as though you hold magic between your fingers.
Above photo source: mike_pants
Photo source: juan_tebonia
Photo source: Treasurion
Photo source: Treasurion
Photo source: Treasurion
Photo source: Treasurion
Photo source: Treasurion
Photo source: PlanetOpal
Photo source: PlanetOpal
Photo source: PlanetOpal
Photo source: PlanetOpal
Photo source: PlanetOpal
via [Reddit]
