|This article is about the Keystone Railway engine. You may be looking for the Crystal Island engine or another Quartz.|
Amethyst is an engine from the Keystone Railway.
Amethyst was only seen in A Keystone Trip when she was seen pulling a train with Citrine.
Not much is known about Amethyst, although it can be assumed that she has a similar personality to the Crystal Island engine of the same name.
Amethyst is a freelance design, although she resembles an LMS Ivatt Class 2MT tank engine, Arthur's basis.
Amethyst is painted lavender with dark purple lining. Her gem is on her coal bunker.