Bi-colour Tourmalines: a fantastical rainbow display in a gem

Bi-colour Tourmalines: a fantastical rainbow display in a gem


Tourmalines are nature’s one and only kaleidoscopic gemstone. They can be found in almost every tone known to man. Greens, reds, pinks, blues and purples. There’s truly an infinite array of possibilities! But arguably, the most intriguing kind of this species are the Bi-Tourmalines, or, Watermelon Tourmalines.

Multi-coloured Gems:

This special variety is a one-of-a-kind marvel of blending hues. When the variation in colour is displayed along the crystal’s length, they are classified as either bi or tri-coloured Tourmalines. However, if spotted concentrically – in the form of a pink core surrounded by a green rind, then you guessed it: this is a Watermelon Tourmaline.

Bi-colour tourmaline ring

An astonishing Calla Lily Bespoke Creation featuring a rectangular bi-colour tourmaline in shades of blue & pink

Depending on the angle of view, this little wonder will reveal its shades in differing intensity. The deepest colour will inevitably appear along the main axis, something to be taken into consideration upon undergoing the cutting process.

An undeniable favourite in the jewellery world, they have become one of the most sought after gems, and we are definitely not immune to their fascinating magic!

Watermelon tourmaline square ring

Watermelon tourmalines are the undisputed protagonists in this one-of-a-kind, custom-made ring

The Gemstone of your Dreams

Our knowledgeable team is forever in awe for the opportunity to create truly unique pieces featuring this sparkly sensation. As huge enthusiasts of custom-made jewellery, we delight in the endless possibilities that a multi-coloured tourmaline rewards us with. Your very own design can be made even more special with a matchless gemstone!

Simply put, they represent one of the great miracles of gemmology and are praised around the world for their beauty.

Bi-colour Tourmaline Ring with Paraiba Shell Carving

Captivated yet? We invite you into Calla Lily’s Singapore Studio – consultations can be scheduled through this form.

If you’re new to coloured gems, we’ll take you through the various options to find an exemplar that speaks to you: we’re happy to help you track down exactly what your heart desires! Once you’ve found the one, we’ll share initial ideas and decide on the best setting to accentuate it!

Watermelon tourmaline square ring and drawings

Behind the scenes: a sneak peek into our designer’s creative process