An excellent specimen of inter grown octahedral Cuprite crystals measuring to 8mm, from Wheal Gorland, St. Day, Cornwall (it is recorded that viable Cuprite rich ore did not appear until a depth of 96 fathoms was reached in the lode). Crystals of Cuprite have a lustrous deep maroon red colour, associated with white Quartz. A great specimen of well defined Cuprite crystals from the mine.