Stories From Sodor Wikia
Rainbow Moonstone
  • Gemstone: Rainbow Moonstone
  • Configuration: 0-4-0ST

Rainbow Moonstone is a gem engine from the Keystone Railway.


Rainbow Moonstone has so far only appeared in A Keystone Trip, where she was seen shunting trucks in the background, and she was later seen in the sheds.


Not much is know about Rainbow Moonstone.


Rainbow Moonstone is a freelance design, although she resembles Percy.


Rainbow Moonstone is painted sky blue with yellow lining. She has a black bufferbeam/footplate. She also has her yellow, blue, and pink gem on her coal bunker.


Total Appearances

Crystal Island Adventures - Speaking Roles: 1 - Non Speaking Roles: 0 - Cameos: 1 - Mentions: 0 - Possible Appearances: {{{6}}}


  • Speaking Roles: 1
  • Non-Speaking Roles: 0
  • Cameos: 1
  • Mentions: 0


Rainbow Moonstone's original gem

Rainbow Moonstone's current gemstone

Rainbow Moonstone has a oval-shaped gem, in a shape similar to that of Pearl, Blue Pearl, Yellow Pearl, Conch Pearl, Meteorite, Angel, and Onyx. It was originally sky blue, yellow, and pink in color and is located on her coal bunker. Starting with her second appearance, her gem changed colour to simply sky blue and pale yellow.


Rainbow Moonstone in real life

Gemstone Information

  • Rainbow moonstone is technically a variety of labradorite.
  • Rainbow moonstone is usually colorless with a blue or, in rare cases, it may have a rainbow-coloured sheen.
  • Rainbow moonstone deposits are found in Canada, Australia, India, Madagascar, Mexico, Myanmar (Burma), Russia, Sri Lanka (Ceylon) and the USA.
  • Rainbow moonstone is a member of the feldspar group, which makes up approximately 60% of the Earth's crust.
  • Opaque rainbow moonstone is mostly cut en cabochon to maximize its attractive adularescence. The orientation of the cut is important and an appropriate height will achieve the desired sheen. Transparent stones are faceted. Large transparent gemstones command high prices because they are rare.