Vivianite is an iron phosphate mineral. It occurs as a secondary mineral found in a number of geological environments.

Sapphire Gemstones
What do you think of the colour?
Sapphire Gemstones Sapphire, The September Birthstone
September is finally here! Brilliance brings you the newest…Vivianite Chrome Vesuvianite. Translucent to transparent complete…
Refer: Now