The Nighthawk Black Pearl and Crystal Black Pearl are two distinct types of black pearls. The Nighthawk variety is found in the waters off Hawaii, while the Crystal Black pearl is found in Tahiti. Both types of pearls are coveted for their unique coloration.
The Nhawk Black Pearl gets its name from its jet black color, which is created by a high concentration of magnesium in the oyster's mantle. This variety of black pearl is relatively rare, and as such, commands a higher price than other types of pearls.
The Crystal Black pearl gets its name from its shimmering, crystal-like appearance. These pearls are created when an abnormal growths forms on the oyster's mantle, causing it to produce less nacre (the material that makes up pearls). As a result, Crystal Black pearls are much softer and more delicate than other types of pearls.