An attractive specimen featuring bright green CRYSTALS of antlerite AND marshite on BOTH sides (front and back photos are shown in top row, left to right). All are gemmy and lustrous. This is a STUNNING example of the antlerite species that also features crystals of awesome quality! HOWEVER, the even more valuable mineral here is the extremely rare copper iodide, marshite; here present in the finest crystals you could expect outside of the type locality in Australia and frankly beating those, as well, for aesthetics. Chilean marshites are gemmy and clear, and sharp as heck. These GEMMY and SHARP crystals reach 4 mm in size! This locality is now defunct and important specimens are becoming increasingly more difficult to obtain. Marshite is one of the marquis species everybody is after, yet only a handful have ever been available for sale and few of such quality. 6.5 x 4 x 3 cm