Boulder Opal is a gemstone that consists of the precious Opals with its host rock. The cutting of it is very glittering that makes it a great gemstone. Boulder Opal contains thin seams and patches of Opal that enfold by rock. It is also supposed to be an effortless cutting form that nicely exploits thin seams and patches. These are also known as Natural Opal Type 2. Boulder Opal is the most valuable Opal that is reputed by their flakes of substantial brown ironstone.

- Bulk Gemstones ​​​​​​​