Alexandrite stone is an extremely rare mineral in the Crizoberyl group (Chrysoberyl) with a color changing effect.
Experts estimate that this gem of 14cm x 7cm is worth about 4 million rubles (US $ 70,000).
An Australian company has unearthed the diamond with the largest value in South African countries.
Some minerals in the heart of the Earth have reserves of less than one sugar and are easy to dissolve.
A strange gem has an unmatched attribute of diamonds and newly discovered emeralds.
A rare blue diamond has been found in South Africa, according to the BBC news agency on January 21.
NASA's Mars Exploration Robot has discovered a new mineral that completely changes what humans have known about the Red Planet.
Human ambition in exploiting the universe is unlimited.
This statement was made in an article published in Nature Geoscience. Scientists have used computers to show that these rare minerals may not have originated from the Moon as we
This is considered to be the largest lake of the Earth when the amount of water contained in it can be equal to the amount of water that the continents on Earth combine.