A wonderful miniature from the 2008 wulfenite-mimetite find at Ojuela. This find was known for the unusual elongated blocky habit of the wulfenite crystals and the association with mimetite. This piece hosts sharp, lustrous, pristine wulfenite crystals of the top orange colour for the find, in association with mimetite balls of the top green colour […]

Sharp, lustrous crystals of greenish-yellow adamite, attractive in normal visible light and vibrantly fluorescent under ultraviolet light – this specimen really pops under the UV! In very good condition, a gorgeous fluorescent specimen.    

A cabinet specimen of light green datolite crystals with crystals of pyrite and chalcopyrite, not only on the surface but also as inclusions inside the datolite crystals. The datolite crystals are sharp and up to 4.3 cm. In very good condition, some minor chipping in places. This is a very cool piece – many included […]

A ball of dark bluish-green crystals of köttigite, centred on matrix. Köttigite is the Zn-bearing end-member of the köttigite-parasymplesite series (parasymplesite is the Fe-bearing end-member) – analysis provided by Jordi Fabre has confirmed that this particular specimen is an iron-bearing köttigite. Upon inspection with magnification, one can see tiny coatings of yellow pharmacosiderite. This specimen […]

A very cool specimen of galena crystals and pyrrhotite crystals that grew contemporaneously, such that the growth of each sometimes interrupted the growth of the other. At first glance, it actually looks as though it is pyrrhotite partially replaced by galena, but this is because in the galena crystals and pyrrhotite crystals happen to be  […]

This is a great piece – it is a pseudomorph of pyrite after very elongated, steeply-tapered pyrrhotite, covered with brilliant arsenopyrite crystals. Most of the bright sparkling crystal surfaces visible on this specimen are in fact arsenopyrite. The arsenopyrite crystals are oriented all along the form of each pyrrhotite crystal, indicating that they formed in […]

A cabinet specimen covered with lustrous butterscotch-coloured wulfenite crystals from Los Lamentos. These crystals exhibit colour-zoning, with lighter zones at either end of each crystal, and a darker zone through the middle of each crystal. In very good condition overall, some missing crystals around the periphery. Stands perfectly for display as photographed. From the John […]

This cabinet piece hosts beautiful, sharp, lustrous legrandite crystals up to 0.7 cm. They have excellent golden colour. The main line of crystals across the middle of the specimen includes the larger crystals, and the area below (or to the left, depending on how you choose to display it) has wonderful crystal groupings that look […]

A gorgeous cabinet specimen combining rich golden-iridescent pyrite crystals with sparkling flower-like clusters of calcite, originally from the collection of Peter Bancroft. Minor sphalerite in association. It’s hard to capture the colourful patina and the crisp visual look of the pyrite crystals in the photos – they are more accurate than the video clip, but […]

A cluster of beautiful fluorite crystals from the Naica Mine. These crystals have a light magenta hue due to faint purple zones within (the video clip below conveys this quite accurately). They are sharp, and exhibit a combination of cube and dodecahedral crystal faces. The cube faces  are glassy and bright, and the dodecahedral faces […]

A cabinet specimen featuring green balls of austinite crystals. With magnification (just a loupe) one can easily see the forms of the austinite crystals comprising the balls. In excellent condition – pristine. From the Tracy Kimmel collection, and formerly Peter Megaw, this is an absolutely superb austinite! NB: The colour representation in the still photographs […]

This specimen hosts sharp, glassy crystals of adamite that are more than they seem at first glance. The crystals have such good lustre that they look wet. These crystals seem to exhibit a somewhat odd colour for adamite, but upon close inspection it becomes clear as to why this is – they are colour-zoned, with […]