A true old Cornwall classic, this is a specimen made up entirely of sharp, lustrous olivenite crystals. The crystals (up to o.5 cm) are elongated, with curved faces and chisel-tip terminations. In very good condition, a few small crystals and areas are incomplete. From the Tracy Kimmel Collection (it also has two labels from older […]

A plate of glassy fluorite crystals with a featured penetration twin standing up over the rest of the fluorites. The penetration twin is an extremely light delicate lilac colour, while the rest of the crystals are colourless to perhaps the faintest blue. All of the fluorite crystals are sharp and highly lustrous. On the back/underside […]

This is a gorgeous Swiss gwindel – a nice twist, absolutely brilliant lustre (as bright as quartz gets), and great transparency. There are a couple of chips and the right-hand crystal is incomplete – one can light it so that these are not distracting – in the end, these are what make this an affordable […]

A cluster of sharp pyritohedral crystals of pyrite – from underneath, one can see that these interlocking crystals seem to have grown on a larger underlying one. In excellent condition overall – in 360 degree rotation, one can see two missing crystals and two chips – it is easily displayed in more than orientation without […]

Aggregates of tiny electric blue azurite crystals together with contrasting white calcite. There are also beautiful microscopic yellowish-green needles of what I believe are agardite-(Ce) – testing would be necessary to confirm – and bright green malachite.  In excellent condition overall – with magnification, one can find slight rubs. The azurite crystals in the balls […]

This piece features two superb, gemmy scalenohedral calcite crystals. I rarely use the word gemmy, but these calcites are essentially transparent, and the colour and texture showing through are coming from the backsides of the crystals. In excellent condition – with magnification one can see a tiny rub on the back of the taller crystal […]

A cluster of bright green pyromorphite crystals from Spain. The crystals are sharp and lustrous, bundled together in parallel-growth groupings. In very good condition, some incomplete crystals. This piece is from the Tracy Kimmel Collection, acquired from Jordi Fabre (whose label accompanies the specimen. A beautiful splash of bright colour! About Tracy Kimmel (click here) […]

A pair of razor-sharp fluorite cubes on a thin plate of iron-oxide-coated quartz. These fluorite crystals are very subtly coloured – very faintly icy blue, but with some warmer areas inside. They are translucent have a frostly look. The crystals are each slightly stepped. In excellent condition – a tiny imperfection at the lower left […]

A classic botryoidal hematite from the Florence Mine. The colour ranges from dark steel grey to iron red metallic, and the lustre is mostly satin-metallic, with some more lustrous areas at the one end (upper right, as photographed). In excellent condition, no damage (incomplete botryoids around the periphery where this was attached. Underneath/behind, one can […]

This is a superb glassy French gwindel. It is a good size, with brilliant lustre and areas of beautiful internal clarity. The specimen is completely crystallized, as the bottom and backside are covered in fine recrystallization patterns indicating that this piece separated from its original position in the cavity before crystallization was complete. It is […]

This specimen features beautiful little deep blue quartz crystals dotting the top of the matrix. These are sharp, lustrous dipyramidal crystals (i.e. Cumberland habit) and they owe their colour to micro-inclusions of riebeckite needles. In excellent condition. From the John S. White Collection, looks super with magnification (under a loupe).  About John S. White  

Sparkling blue quartz crystals, the colour being due to inclusions of needle-like crystals of magnesio-riebeckite. Individual included crystals of magnesio-riebeckite are visible under magnification (with a loupe). The quartz crystals are sharp and lustrous dipyramids. A cool specimen! About John S. White