When talking about moonstone most people think of rainbow moonstone or labradorite but there are other types of moonstone with the main difference being colour and the way they reflect light. Black moonstone which is possibly one of the most curious of the coloured varieties is not truly black but more of a rich silvery grey. It does however like the other varieties exhibit an optical phenomenon known as adularescence or schiller. When exposed to light a silky glow appears from deep within the gemstone which dances around on the surface as it captures and reflects the light. The effect is similar to the reflection of the moon on water which is how moonstone got its name.
Whilst this optical phenomenon is quite fascinating, there's something else which makes black moonstone even more fascinating. Although at first glance it appears to be an opaque mineral it's actually translucent and when slowly raised up towards the light, its colour drains away almost completely. When fully illuminated in front of a bright light black moonstone has virtually no colour at all and the only characteristics which can be seen are a few indistinct inclusions.
As well as being exceptionally eye-catching this black moonstone pendant will also appeal to those fascinated by unusual rocks and minerals.