Zircon - Persian word 'zargun', which means 'gold-coloured', but Zircon comes in a wide range of attractive rainbow colors, and also the colourless variety which
looks like diamond due to its brilliance and dispersion. Natural zircon today suffers due to similarity of its name to cubic zirconia which is a synthetic substitute.
Zircon is known for its distinctive beauty in a wide variety of colors. Zircon is a relatively hard stone with a hardness of 7.5. Because it has such a high refractive index, zircon can be one of the most brilliant of all gem stones.