25ct Rainbow Tourmaline. The gemstone Tourmaline can be had in many colours; it is mostly found in not particularly attractive darkish browns, but very pleasant pinks, and even reds, and yellows and greens, of all shades, are mined in various world locations; Brazil is the world’s main source of fine Tourmaline gemstone colours. Brazil is also known for multi-coloured Tourmalines, like the 25ct Rainbow Tourmaline above, where the colour pink at one end of the crystal changes to pale green at the other.
Rainbow, or Watermelon, Tourmaline is created through fluid variations in chemistry in the crystallization process. The result can be quite striking, with gemstones relatively free of inclusions exhibiting quite distinct lines of colour, and good examples of this are very costly indeed, and are usually set in fine Gold rings.
By far the highest cost component of the above Watermelon Tourmaline bead pendant necklace is the 4 gram 18ct White Gold rope chain. At the current world Gold price, as of December 2024, the 18ct White Gold chain constitutes over 80% of the price of this interesting, precious item of jewellery.