Fungal corneal ulcer, with excessive vascularization. Keratitis is a general term meaning any inflammation of the cornea. The term fungal keratitis refers to a corneal infection caused by fungi. One type of fungus that can infect the cornea is Fusarium.
Where do the Stones come from? Suiseki Stones are legally collected from a variety of streams and rivers across the world. Different rivers tend to create their own unique stone style due to the ecology of the river and the way in which the water develops the stones over time.
Beside black, red, green and almost all other colors, tourmaline is also available as yellow stones, though the yellow gems are very rare. The yellow gemstones come from the species of tourmaline called dravite, as well as the more valuable elbaite. The yellow rocks are mined in Brazil and Africa.eside white, rhodizite and londonite both occur as yellow stones. The yellow rocks are borate minerals, a group which includes salt. Unlike salt, the yellow gemstones are not soft and soluble, but are resistant to weathering. The yellow gems make rather expensive jewelry due to their rarity.