Australian boulder opal cabochon with a dark blue colour and cut into a versatile triangular shape that would look great set either length or widthways as a pendant or as a ring. For inspiration on setting stones like this, click here to see a video of making a gorgeous pendant with a similar boulder opal cabochon.

For more information on boulder opals visit our 'Boulder Opal' information page.

• Cabochon
• Size: approximately 19x7mm
• Has a hardness of 5.5-6 on the Mohs scale
• Natural genuine gemstone - no treatment - as these are natural stones they may have slight surface imperfections. As opal cutters "chase the fire," following the seam through the host rock to reveal its brilliance, boulder opals sometimes have slightly uneven surfaces. These undulations are left to preserve the opal layer and its fire, avoiding unnecessary loss during cutting.
• Birthstone of October
• Healing properties: calming, comforting and happiness
• Country of origin: Australia
• Sold individually, the opal pictured is the one you will receive on purchase