|This article is about the engine. You may be looking for the freight car.|
Emerald is an engine from the Keystone Railway.
Emerald has so far only been seen in A Keystone Trip.
Not much is known about Emerald.
Emerald is a freelance design, although she resembles an LMS Ivatt Class 2MT tank engine, Arthur's basis. .
Emerald is painted light green with dark green lining. She has her gem on her coal bunker.
Emerald has a rectangular gemstone with a rectangle facet. It is green in colour and located on her side.
- Emerald is regarded as the traditional birthstone for May as well as the traditional gemstone for the astrological signs of Cancer.
- Emerald is a gemstone of the beryl family, which also includes aquamarine and morganite.
- Emeralds are also famous for their use in jewelry; they are among the top four most commonly used gems. The other three are diamonds, rubies, and sapphires.
- Emeralds in antiquity have been mined in Egypt since 1500 BCE, and India, and Austria since at least the 14th century CE.