Labradorite Bookends
The set weighs 11 lbs. 5 oz.
$130.00
Labradorite is a Feldspar mineral that occurs in large Crystal masses
in anorthosite and shows an iridescence or "play of colors." Gemstone
varieties of Labradorite exhibiting a high degree of iridescence are
Spectrolite, Moonstone and Sunstone. High quality samples with good
iridescent qualities are desired for jewelry.
Dugway Geode Bookends
The set weighs 8 lbs.
$90.00
Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks. They are essentially rock cavities or vugs with internal Crystal formations or concentric banding. The exterior is generally Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits. If the Geode is completely filled with Crystal, being solid all the way through, it is then called a nodule.
Brazilian Agate Bookends
This set weighs 4 lbs. 8 oz.
$40.00
Agates mostly occur as nodules in volcanic rocks or waters containing silica in solution possibly derived from the decomposition of silicates in the lava. The siliceous matter is deposited in regular layers resulting in the banded or striped formation.
Arizona Petrified Wood Bookends
The set weighs 10 lbs. 11 oz.
$150.00
Petrified Wood is a type of a fossil as it consists of fossil wood where all the organic materials have been replaced with minerals while retaining the original structure of the wood. These minerals are most often Silicates such as Quartz. Other minerals, Manganese, Iron and Copper, in the water or mud during the petrification process gives Petrified Wood a variety of color ranges: black - Carbon; green/blue - Copper; red/brown/yellow - Iron. Petrified Wood can preserve the original structure of the wood in all its detail all the way down to the microscopic level. Structures such as tree rings and the various tissues are often observed features. Although Petrified Wood can be found worldwide, it is rather rare in larger quantities and at times can be difficult to obtain by the average collector.
Brazilian Agate Bookends
This set weighs 5 lbs. 1 oz.
$55.00
Agates mostly occur as nodules in volcanic rocks or waters containing
silica in solution possibly derived from the decomposition of silicates in the
lava. The siliceous matter is deposited in regular layers resulting in
the banded or striped formation.
Orthoceras Bookends
The set weighs 7 lbs. 9 oz.
$42.00
Orthoceras is a genus of extinct Nautiloid Cephalopod.
These fossils are common and have a global distribution which occur in any marine
rock, especially Limestone. These are slender, elongated shells with the
middle of the body chamber transversely constricted and a sub-central orthochoanitic
siphuncle. The surface is ornamented by a network of fine lirae or fine
lines/ridges.
The set weighs 12 lbs. 9 oz.
$140.00
Agates mostly occur as nodules in volcanic rocks or waters containing silica in solution possibly derived from the decomposition of silicates in the lava. The siliceous matter is deposited in regular layers resulting in the banded or striped formation.
The set weighs 6 lbs. 11 oz.
$40.00
Sandstone is a sedimentary rock composed mainly of sand size mineral or rock grains. Most Sandstone is composed of Quartz and/or Feldspar because these are the most common minerals in the earth's crust. It can be almost any color. The Sandstone beds often form highly visible cliffs and are strongly identified with certain regions of the world.
Brazilian Agate Bookends
The set weighs 3 lbs. 9 oz.
$35.00
Agates mostly occur as nodules in volcanic rocks or waters containing silica in solution possibly derived from the decomposition of silicates in the lava. The siliceous matter is deposited in regular layers resulting in the banded or striped formation.
The set weighs 10 lbs. 5 oz.
$85.00
Sodalite is a rich royal blue mineral enjoyed as an ornamental stone. Although massive samples are opaque, Crystals are usually transparent to translucent. It is very similar to Lapis but with out the Pyrite Crystals and distinguishable color differences. It makes great jewelry, cabochons and beads.
Birds Eye Rhyolite Bookends
This set weighs 5 lbs. 6 oz.
$38.00
Rhyolite is an igneous, volcanic rock that is composed of Felsic, or Silicate minerals such as Silica, Aluminum, Sodium and Potassium. The material is similar to that of Granite, Pumice and Obsidian but due to the cooling process when formed, Rhyolite did not form any crystals, thus changing the texture of the material.
