Of all sedimentary minerals, calcite is probably the most widespread, contributing a full 2% to the volume of the Earth's crust. It occurs in endless crystal forms with many different colors. With such variety it is not surprising that some collectors specialize on calcite alone.
Agate is a beautiful and very popular gemstone that is widely recognized for its unique and varied colors and banding. It is a type of microcrystalline quartz that is commonly used as an affordable alternative to pricey gemstones in jewelry. It may also be carved into figures or statues, or used in handles for knives.
Chalcopyrite is the most important copper ore, and it is the primary source of many popular secondary copper minerals. It can occur in a variety of environments and forms, from hydrothermal veins to sedimentary layers. Nice chalcopyrite crystals are highly sought after by collectors.
Chalcedony is very variable and versatile stone and occurs in many environments. It was used since prehistoric times for stone tools and became one of the most used gemstones. Despite its abundancy, chalcedony still has some secrets.
Galena, historically also named lead glance, is among the most abundant sulfides. Besides forming aesthetic mineral specimens, galena is the primary lead ore. And galena itself was a first semiconductor ever used.
Mineral frauds and fakes can be found at any mineral show, large or small. This guide to common scam practice is far from complete, but it will help you to avoid being fooled by dishonest dealers.
Diamonds are forever, and they are a girl's best friend, but as minerals go they are not just another pretty face. Noted from ancient times for beauty, brawn and mystery - and today for impacting a broad segment of modern life - diamonds stand out as one of the most exceptional of all minerals.
Fluorite is known as one of the very important industrial minerals and it is also the only widespread natural source of fluorine. Many mineral collectors are interested in fluorite because of its beauty, richness of forms and its broad spectrum of colors.
Rockhounding is a great outdoor activity which combines exploration, science, hard work and what can be strenuous hiking. Whether you are going to a drive-in site, a quarry, or exploring a remote outcrop, you will need to think hard about what you need to bring in order to make sure you have everything you could need for your trip.
Tektites are quite popular with collectors - and moldavite is far and away the most beautiful of them. Moldavite's rich green color and uniquely textured surface makes it attractive to both collectors and jewelry makers.
