Bumblebee jasper is a relatively rare stone which can only be found on the volcanic island of Java in Indonesia. Although referred to as a jasper some doubt it's a jasper at all and believe it to be fibrous calcite coloured by several other minerals. These are believed to be sulphur, orpiment or possibly both and also hematite.
As far as we're aware no in depth analysis has ever been carried out on bumblebee jasper and due to its rarity, it's fairly unlikely to happen.
Sadly bumblebee jasper is almost completely mined out so finding nice grade stones can be a real challenge. Most of the material available to buy has either been tumbled or has been cut as cabochons for use in the jewellery trade. India cuts millions of cabochons each year and during visits over many years we've seen large amounts of low to medium grade stones. In Jaipur where most cutting is carried out, bumblebee jasper is known as eclipse stone.
This colourful stone would make a great addition to any collection of polished rocks and minerals. We're not sure how stable the colour is so we'd recommend keeping this bumblebee jasper stone away from direct sunlight.