This beautiful Australian free form boulder opal cabochon has an unusual violet purple colour and gorgeous sparkles of fire in a clear pool above the boulder host rock. An ideal size and shape for a ring or delicate pendant. Despite its small size it is very striking and will definitely make an eyecatching piece of jewellery. For inspiration on setting stones like this, click here to see a tutorial to make a ring with a freeform stone.

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

• Cabochon
• Size: approximately 11 x 9mm
• 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