• Meryem ....

    When minerals form a flat surface it is called a face. Minerals can have many flat surfaces and when these faces join together, they form a crystal. Download the activity page on the right and create your own mineral face or even a mineral cartoon character out of the mineral faces on the sheet.

  • Mr and Mrs White

    Ethiopian Opal Geode (like a diamond in the rough!) #GemstoneSerendipity #gemstones #minerals #rocks #stones #fossils

  • Michele Hauf

    .opal (looks like an exotic chocolate truffle)

  • Miniature Dreamscapes

    Geode, Ethiopian Opal A mineral, by definition, is . . . Inorganic, which means that it is not made by a living organism. A solid. There is one unusual exception. Native mercury is a mineral and is the only metal that is a liquid at normal temperatures. Has a regular crystal structure. The crystal structures are described as crystal systems. Made by nature which means minerals are not made, directly or indirectly, from human activity. Has a predictable chemical formula.

More from this board

Photographer Skarphéðinn Þráinsson on the edge of the crater at the erupting volcano in Fimmvörðuháls, Iceland

Devil's Tower, Wyoming

Liesegang Rings at Bouddi National Park, New South Wales, Australia

Padirac cave - France. :-)

Spodumene var. Kunzite

The natural phenomenon of Trovants: stones that literally grow by themselves. Romania may be known as the land of Dracula, heaped with bloodthirsty vampires and other creatures shaped by Hollywood imagination, but it is also a land where nature has had an interesting activity. Far less known to the world than Dracula, stand an impressive number of stones which quite literally grow by themselves. The stones are real and known as Trovants.

Perfect Trapiche' Emerald

Lucrative industry: These diamonds, weighing over 50 carats each, were found in Russia's Yakutia mine, which has been rich resource for the country, but nothing compared to the new one

Rare Dendritic Agate / India

Goethite / Dachang mine, Qinglong County, Guizhou Province, China

Diamond

Ferruginous Quartz (Jacintos) "heart" with sparkling hedgehog-type crystals with inclusions of iron compounds / Chella, Spain

Grossular Garnet from Jeffrey Mine, Asbestos, Quebec, Canada

Crystalline copper "feather" from Itauz Mine, Kazakhstan

Chinese Lapis Lazuli with inscriptions wishing you good fortune and long life

Dendritic Agate

Pyrite and Quartz

Halite

gem forms

Kyanite.

Rutile on Hematite

Amethyst and quartz colored red through hematite inclusions

Iridescent Goethite