What a dazzling new discovery! On selective edges of the calcite crystals on this large cluster is bright, golden pyrite - even brighter and more amazing than the pics show! The result is so dramatic and eye-catching! Got these about a month ago from a close and good contact in China who brings us now and then wonderful new things that have not been seen yet....these are SO pretty, in person. We have the best of the lot so far, and are waiting to see if more come! Presented in this update are the three best so far.this one does not have as dense a covering of pyrite, but makes up for it in size and brightness of crystals; for someone who likes BIG specimens. 18.5 x 12 x 5 cm