This specimen, an English classic, combines both specular (glittery, platy crystals) and "kindey ore" hematite (forming the matrix) with quartz crystals on a single specimen. You can see the kindey ore at the right edge of the specimen; it is shaped as a convex "bubble" here - can sometimes (when bare, with reddish-brown color) look like kindeys, which is where the name is derived. Ex. Richard Hauck Collection.