Star rubies and sapphires
Star stones of ruby and sapphire, both are varieties of the mineral corundum (aluminium oxide). Ruby always appears in red where as sapphire comes in a variety of colours
Picture No
10703706
Media ID
47586167
Size
3746px x 4666px
(18.5MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
