You will be given a definition of a task first, then some input of the task.
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Synthetic varieties of this mineral were made by Auguste Verneuil using the flame-fusion process. Asterism in this mineral is caused by the inclusion of rutile. One variety of this mineral has a shade known as Kashmir blue, and another variety has a shade called pigeon's blood. The material emery consists of magnetite and this mineral. Aluminum oxide occurs naturally in large deposits as this mineral, which has a value of nine on the Mohs scale of hardness. For 10 points, name this mineral whose transparent varieties, such as sapphire and ruby, are used as gems.
Output:
Science