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7714 mineral photos
1244 locality photos

Last articles

Cerussite - The White Paint Scourge

Cerussite is a popular mineral specimen because of its nice crystals, bizzare complex twins and bright yellow fluorescence. It is a characteristic oxidation product of the most common lead sulfide, galena.


Chrysocolla - The Bright Blue-Green Copper Silicate

Chrysocolla is a bright colored hydrated copper sheet silicate and a minor ore of copper, usually appearing as secondary encrustations on primary copper ores. It is among the brightest of blue and blue-green minerals, accounting for its desirability.


Prehnite - The Epimorph Champion

Prehnite is a common calcium silicate, which can form outstanding crystalline aggregates. Its nice crystal forms and pleasing colors make it a very popular among collectors. Prehnite is also used by jewelers and it is an important metamorphic index mineral.


Cassiterite - the tin ore mineral overview

Cassiterite constitutes the chief ore of tin, as well as highly aesthetic and popular collector specimen. Tin was a foundation of the beginning of metal smelting in the early Bronze Age and still constitutes one of the core materials of modern technology.


Cuprite - The Ruby Red Copper Oxide

Cuprite is a minor ore of copper, usually appearing as secondary encrustations on primary copper ores. Nice and rare cuprite crystals are a popular among collectors. It is prized as a gemstone because of its vivid red internal reflection, but its softness precludes wide use in jewelry.


Wavellite, cacoxenite

Třenice, Czech Republic

40 x 30 mm

Quartz (var. amethyst)

Jickovice, Czech Republic

55 x 40 mm

Quartz (var. amethyst)

Jickovice, Czech Republic

75 x 35 mm


Vrančice, Czech Republic

70 x 20 mm

Quartz (var. smoky)

Dolní Bory, Czech Republic

20 x 40 mm


Rousměrov, Czech Republic

40 x 50 mm