OverviewDesignated the Hawaii state gem in 1987, black coral in Hawaii is the host to unique marine life all around the islands. Like their namesake, the rectangular Black Coral sunglasses from Maui Jim are vibrant and unique, made from lightweight SuperThin Glass. Call to order prescription in your Maui Jim eyewear. WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.