Saphir du Montana - Bicolore Saphir étoilé / Star sapphire Boulder opals are found in

Boulder opals are found in ironstone

Shape: Baroque

Shape: Kite

The valuable material is often in veins or in layers too thin to be extracted from the bedrock

Pair of slate containing a multitude of small pyrite crystals

Saphir du Montana - Bicolore Saphir étoilé / Star sapphire Boulder opals are found inSapphires are the most used stones in jewelry after diamonds. Their durability is excellent. Those from Montana are found in all colors, but the most popular are blue green blue green. Some are called Party colored sapphires. These sapphires have color zones and we can see 2 distinct colors in the same stone! Our Montana sapphires come from the Rock Creek mine and most are cut by our lapidary collaborators in Sri Lanka. Variety: Corundum Color: Blue