Bianco 4 Carat Canary Brilliant Cut Diamond. . Important information about "Bianco-Created-Diamonds®". Bianco® is a trademark that many consider to be synonymous with "the best of the best". "Bianco-Diamonds®" are not tobe confused with a zircon, with Moissanite by Charles Colvard, simulated moissanite, simulated cubic zirconia or a crystal. "Bianco-Created-Gemstones®" and "Bianco-Diamonds®" are unique man-made, hand-cut, creations thathave been hand selected for their beauty, comparable to the finest geologically mined gemstones. Bianco stones have extraordinary properties - specific gravity between 5.6 and 6.0, 1.6 times that of an uncut diamond, refractiveindex is high, at 2.15–2.18, its dispersion is 0.058–0.066 and using the same grading scale as a geological carbon diamond. White diamonds fall within a color chart of colorless A-C, near colorless-F, faint yellow G-N up to "SZ" which isyellow. This stone, if graded using a geological diamond grading system, would be classified as VVSI-E, virtually flawless. Your gem comes with a certificate of authenticity and lifetime guarantee from breaking or