Synthetic Color Change Sapphire Price Per Carat

8 60 ct 11 3x9 3 mm purple color change star sapphire 6 ray lab corundum pcs7697 30 00 20 25 ct 18x13 8 mm alexandrite color change red to purple lab corundum pc6244.

Synthetic color change sapphire price per carat.

These sapphires have various color change intensities from one stone to the next. Synthetic green sapphires show lines at 5300 and 6870. However larger stones tend to have more inclusions and irregularities and hence lack in quality aspect. Some color change sapphires will have only a slight visual change while others have incredible 100 change of color.

The standard for color change sapphires. Natural green sapphires show lines at 4500 4600 and 4700. The three bands described are generally known as the 4500 complex and are very distinctive in sapphires. Some blue sri lanka sapphires also show a 6935 red fluorescent line and the 4500 line is very weak in these gems.

Synthetic color change sapphires show a line 4740. Besides this if the quality remains the same larger color change sapphire stones sell for much higher prices. See main sapphire gem listing for more information.