Brown, cone-shaped natural stone object. - Color: Brown - Shape: Cone - Material: Natural stone Stalactites are secondary formations that grow like icicles from the ceilings of limestone caves. They are formed when groundwater containing carbon dioxide dissolves calcium carbonate and drips, causing it to precipitate. They grow over a very long period of time, and it is said that it takes about 100 years for them to grow just 1 cm. In a broader sense, it is also used as a general term for cave formations, including "stalagmites," which grow from the floor towards the ceiling. This is a natural stalactite that my grandfather obtained over 60 years ago. It seems to be rare and unavailable these days. I would like to sell it to someone who appreciates it. Thank you for looking.