This piece features mirror-bright inter-penetrating crystals of sphalerite on crystalline galena with sprays of quartz crystals. The sphalerite crystals are sharp and so lustrous – as sphalerite crystals go, they are the darkest black and do not have as metallic a look as some sphalerite crystals do (their lustre is fairly glassy). This is a bit hard to make out from the photos since they are reflecting metallic reflectors. There are transparent quartz crystals in association – these are sharp and lustrous. In excellent condition, a couple ot tiny nicks and one small incomplete spot on a sphalerite. Stands perfectly for display on a saw-cut base. These are exquisite sphalerite crystals!