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David Cowley's Articles

  • World Famous Diamonds 5
    This is one of a series of articles discussing the most famous diamonds in the world.
  • World Famous Diamonds 4
    This is one of a series of articles discussing the most famous diamonds in the world.
  • World Famous Diamonds 3
    This is one of a series of articles discussing the most famous diamonds in the world.
  • World Famous Diamonds 2
    This is one of a series of articles discussing the most famous diamonds in the world.
  • World Famous Diamonds 1
    This is one of a series of articles discussing the most famous diamonds in the world.
  • Treasure Hunting For Turquoise
    Turquoise is possibly the most valuable, non-transparent mineral used in jewelry. It has been mined since at least 6000 BC by Egyptians. Like other opaque such as coral, turquoise is commonly sold by the size in millimeters rather than by weight.
  • Treasure Hunting For Truffles
    Truffles is a mushroom that has formed a symbiotic relationship their environment. They grow underground among the roots of trees with only a few types of trees, such as cedar and maples that are not associated with truffle forming fungi.
  • Treasure Hunting For Tourmaline
    According to Egyptian legend tourmaline gets it color when it passes over a rainbow on its journey up from the center of the earth and that is why it is often referred as the gemstone of the rainbow. Multicolored and bi-colored tourmaline are the norm and very rarely found in the clear or colorless form. Watermelon colored gemstones are green at one end and pink at the other, hence the name.
  • Treasure Hunting For Sunstones
    Sunstones are formed in molten lava and found in volcanic vents that have erupted from volcanoes. When the lava rock is weathered away or broken up the sunstone crystals are exposed. Sunstone is a transparent, yellowish labradorite found as crystals in these volcanic rocks.
  • Treasure Hunting For Sunken Treasure
    If you grew up dreaming of searching for sunken treasure, you're not alone. Many young men and women have had dreams just like that, of searching the ocean floor for remnants of some sunken ship that was loaded down with gold coins and gem encrusted goodies.
  • Treasure Hunting For Star Garnets
    India and Idaho are the only two places in the world that star garnets are found. They range in size from a grain of sand to golf ball in size. Star Garnets display a reflection of the light with a four or six ray star, which is caused by an inclusion of rutile in the gemstone. Idaho is the only known place where six ray star garnets are found.
  • Treasure Hunting For Sapphires
    Sapphires have captivated people for thousands of years. They seem so encapsulate wisdom somehow, or perhaps our own potential. Somewhere in a pile of dirty gravel, there is a shining gem just waiting to be uncovered. Sapphires come in a wide variety of colors, including blue, pink, orange, brown, clear, yellow and purple. Why no red sapphires?
  • Treasure Hunting for Opals
    Opals have been considered a magical precious stone for thousands of years. It is said to help the wearer's psychic powers and to have better and more vivid dreams. Modern Witches and Pagans especially look for black opals, said to enhance any magic spell. But not are opals rich in myth and magic, they are also really nice to look at.
  • Treasure Hunting For Meteorites
    Treasures are falling from the sky. A natural object originating in outer space that survives the impact with the earth’s surface is called a meteorite. Most meteoroids burn up when entering the Earth's atmosphere. However, it has been estimated that over 500 meteorites do reach the surface each year and they will range in size of a marble to basketball size or larger.
  • Treasure Hunting For Megalodon Teeth
    If you're interested in fossils you may already have knowledge of megalodon teeth and realize that these are not collectibles that you can wear around your neck, but are truly a prized find for any treasure hunter. What do we mean by megalodon teeth and why would anyone want to see one?
  • Treasure Hunting For Jade
    Do you have a hankering to find some Jade but you do not want to travel to China or South America for it? Well you are in luck; you can just pick it off the ground from Jade Cove which is located about 65 miles south of Monterrey California.
  • Treasure Hunting For Herkimer Diamonds
    Herkimer diamonds are double terminated quartz crystals that are found in Herkimer County, New York, hence the name. These crystals have usually have a shape that is very similar to diamonds with 18 facets and two terminators or points at the end. These beautiful gemstones were formed close to five hundred million years ago.
  • Treasure Hunting For Gold
    Treasure hunting is the common name for a fun and interesting hobby enjoyed by thousands of people around the world. They use portable metal detectors to go outside and literally hunt for treasure. With the price of gold over $700 oz today, more and more people are getting metal detectors and heading into the hills.
    The FMDAC
  • Treasure Hunting For Geodes
    Thunder eggs, or geodes, are geological rock formations which occur in sedimentary and certain volcanic rocks. They look like regular rocks from the outside, the exterior typically made up of limestone, but then have crystal formations of quartz on the inside. They're referred to as thunder eggs by treasure hunters because they resemble very large eggs with their smooth exterior and round shape.
  • Treasure Hunting For Fossil Fish
    While you may assume that you need to travel to some far-off and exotic land and become a full-fledged Indiana Jones to find this type of treasure, in reality many have been able to come across these ancient fossils in whatever local area they live, including parts of the central United States, as well as in Germany, China, Italy, and other such areas.
  • Treasure Hunting For Fluorescent Minerals
    Have you ever seen a rock that seems to glow in the dark? Maybe only when you've been at a museum or science center, but in reality fluorescent minerals can be readily found in many places and make for an amazing and eye-catching hobby. But for those who have such a collection it's important to understand how to care for and display it properly so that you experience the full effects of such beautiful items.
  • Treasure Hunting For Fire Agates
    Fire Agates is a layered stone that is formed then water that is saturated with colloida silica and iron oxide enters a cavity in a rock and the mineral in the water starts do form new rock. When cutting, the stones layers are ground or polished off following the natural contours of the stone until the desired colored is all that is left. Grind off one to many layers and the stone is ruined.
  • Treasure Hunting For Emeralds
    As with most gemstones the emerald can be created as the result of volcanic activity, where the extreme pressure and heat creates the gemstones. Another process knows as hydrothermal circulation, which in the most general sense is the circulation of hot water containing dissolved minerals passing through pockets in the underlying bedrock, evaporate caused the stones to cool as large crystals.
  • Treasure Hunting For Civil War Artifacts
    If you're a modern-day treasure hunter you may wonder how you can find some great Civil War artifacts, whether on your own or through another seller that has already found them for you. Believe it or not, there are still some great items you can find from the Civil War even after all these decades.
  • Treasure Hunting For Benitoite
    Benitoite was named after the county where it was first found, San Benito County, in 1907 and to this day San Benito County is the only place in the world that you can find this gemstone, making it among the rarest gems on the planet. Benitoite became California's official state gemstone in 1985.
  • Treasure Hunting For Aquamarine
    Not every buried treasure has been discovered. There still is a remarkable quantity of quality treasures still in Mother Earth, including the semi-precious stones to be found at Gem Mountain in North Carolina. One of the biggest draws to Gem Mountain is aquamarine treasure hunting. You find it - you keep it. It's as fun and as simple as that.
  • Treasure Hunting For Antique Bottles
    To some, old bottles are just junk taking up space on the windowsills of the kitchen. They truly don't appreciate the craftsmanship that typically went into making these items, which was usually done by hand. Of course there are other reasons why someone would be interested in antique bottles, and it has to do with more than just how the bottles were made.
  • Treasure Hunting for Amethysts
    The Amethyst gemstones range in color from pale lilac to deep purple. Gemstones with the deepest colors are the most valuable and some of these fine gemstones are featured in the British Crown Jewels. Amethyst is a transparent quartz crystal and is used in many pieces of striking jewelry today.
  • History Of Synthetic Diamonds
    As the name implies synthetic diamonds look like real diamonds but do not have the same properties as real diamonds. The ability to determine the differences between chemical compusosition, hardness, weight, and some of the light handling characteristics of real diamonds and synthetic diamonds with the naked eye is extremely difficult.
  • Facts About Yellow Diamonds
    Yellow diamonds are colored because of the impurities that are trapped inside diamonds when they are created. If a few of the millions of carbon atoms have been replaced by nitrogen atoms, then structure of the diamond will not be significantly altered but the clarity will be changed. The amount of color displayed is dependent on the amount of nitrogen involved.



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