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	PRODUCT DATA of Ruby

Material	Ruby
Product Datasheet	technical ceramics
General Information	Ruby is a variety of the mineral corundum (aluminium oxide). See also sapphire, while properties are very similar
Use in Spacecraft	Rods of synthetic ruby are used to make ruby lasers and masers.
Chemical Composition	aluminium oxide with chromium

	PHYSICAL PROPERTIES

Specific Gravity

3.97 – 4.05

	OPTICAL PROPERTIES

Refractive Index

nω=1.768–1.772 nε=1.760–1.763