Rhodochrosite Mineral

Macro photograph of the patterns in a piece of rhodochrosite (Manganese carbonate) from Argentina Image #3486

Picasso Stone

Macro photograph of patterns in a Picasso stone slab; named 'Picasso' for the brush stroke-like lines; a type of marble from Utah; #3355

Labradorite

Macro photograph of a piece of labradorite (a member of the feldspar group of minerals); from Maniry, Madagascar; #2575

Amethyst

Macrophotograph of the mineral amethyst (Silicon dioxide); a form of quartz that came to be a symbol of celibacy in the Middle Ages; mined in Uruguay. Image #2287

'Mexican Coconut' Geode

Mineral (agate and quartz) patterns in a cut and polished Mexican Coconut geode; Mexico Image #3832

Rolling Hills Dolomite

Macro photograph of a sliced and polished piece of Rolling Hills dolomite; Chihuahua, Mexico Image #3678

Amethyst Mineral

Extreme macro photograph of amethyst from the Purple Haze mine near Thunder Bay, Ontario, Canada. The red coloration is due to the presence of hematite inclusions.; #3019

Dugway Geode

Abstract macro photograph of a Dugway geode from Utah Image #2384

Wonderstone Rhyolite

Macro photograph of linear patterns in a piece of Wonderstone rhyolite; an igneous rock formed as magma cools Image #2709

Birds Eye Rhyolite

Macro photograph of the detail in a piece of Birds Eye rhyolite; a rock of volcanic origin Image #2848

Charoite Mineral

Macrophotograph of a polished slice of charoite; a rare silicate mineral found only in Siberia, Russia Image #2834

Tiger Eye Mineral

Macro photograph of Tiger eye gemstone from Northern Cape Province, South Africa; Tiger eye (Tiger's eye) is a form of quartz Image #3262

Pink Opal

Macrophotograph of the colors and patterns in a cut and polished slab of brecciated pink opal. An opalised radiolarite from Western Australia. Radiolarite is a sedimentary rock composed primarily of the microscopic skeletal remains of radiolara protozoa. Image #3849

Fluorite Mineral

Macro photograph of a slab of fluorite (calcium fluoride) from the Jiangxi Province in China Image #2511

Carnelian Geode

Macro photograph of a cross-sectioned carnelian geode; carnelian is a variety of chalcedony, which is a variety of quartz; from Washington State Image #2896

Chevron Amethyst Mineral

A combination of purple amethyst and white quartz; Africa Image #3830

Rolling Hills Dolomite in Black and White

Macro photograph of the 'rolling hills' in a piece of dolomite from Mexico Imge #3678BW

Pyrite and Quartz

Macrophotograph of quartz crystals (Silicon dioxide) and pyrite (iron sulphide); from the Huanzala mine in Peru; #3566

Amethyst Crystals

Extreme macro photograph of amethyst from the Purple Haze mine near Thunder Bay, Ontario, Canada. The red coloration is due to the presence of hematite inclusions. Image #3015

Azurite

Velvety soft blue masses of azurite are formed from the weathering of copper minerals. Used as a pigment by Renaissance painters.; #3352

Thunderegg Pattern

Linear patterns in a thunderegg agate from Oregon. Thundereggs are nodule-like rocks and are found in layers of rhyolitic lava flows. Image #3701

Geode Linear Patterns

Macro photograph of linear patterns in a Whitcomb Creek geode from Oregon; a geode is a stone nodule with an inner cavity filled with crystals or mineral matter Image #3286

'Birds Eye' Rhyolite

Macro photograph of the detail in a piece of Birds Eye rhyolite; a rock of volcanic origin; #2369

Wild Horse Magnesite

Macrophotograph of a slab of magnesite (white) and hematite (red) from the Globe Copper Mine in Arizona Image #3908