Cobalt Blue Spinel Rough

Natural cobalt spinel is vivid blue and is colored by cobalt. Natural cobalt spinel can be separated from lab created blue spinel by its refractive index and absorption spectra. The rich cobalt blue hues of the gemstone make it a very desired gem, which a higher value and demand on the market than any other spinel. The price of a blue cobalt spinel starts at $2000-3000 and can go over $10000 per carat. And it's very rare for over one carat weight and the leading source of cobalt-blue spinel is Vietnam's Luc Yen district. Thanks to technology and equipments, now synthetic cobalt blue spinel is introduced to gemstones markets and it's widely used to silver and gold jewelry design. Lab created cobalt blue spinel is one of popular gems for jewelry manufacturing.  If you are looking for cobalt blue synthetic spinel rough or gems, you are right here, please feel free to contact us now ! The following are photos of synthetic cobalt blue pre-form rough: