A Moisssanite is a naturally occurring (mineral) silicon carbide and it has the chemical formula SIC.
It is a rare mineral discovered by the french chemist Henri Moissan in 1893. The colour may vary from colorless to green and yellow.
Refractive index also varies and depends on the clarity of the stone.
The price of a Moissanite ring in Nigeria depends primarily on the the metal base of the ring whether it is Sterling silver, 9kt, 10kt, 14kt or 18kt gold.
The secondary variable is the size of the stone and clarity, a 1 carat moissanite stone can cost between $100 to$500 depending on these variables.