The set weighs 7 lbs. 10 oz.
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.
$150.00
Dugway Geode Bookends
Total weight is 7 lb. 10 oz.
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.
$140.00
Silver Ore - Pyrite Bookends
Total weight is 7 lb. 1 oz.
Pyrite, or Iron Pyrite, is an Iron sulfide with isometric Crystals that usually appear as cubes. It is brittle and can break or powder easily. Its metallic luster and brass yellow hue have earned it the nickname of "fool's gold" due to many miners mistaken it for the real thing. Ironically, small quantities of actual gold are sometimes found in Pyrite. It is the most common of the sulfide minerals and is usually found with other sulfides or oxides in Quartz veins, sedimentary or metamorphic rocks.
$85.00
Brazilian Agate Bookends
Total weight is 8 lbs.
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.
$70.00
Onyx Bookends
Total weight is 4 lbs. 4 oz.
Onyx is a banded variety of Calcite. The colors of its bands range from white to almost every color except shades of purple, blue and black. It is used for vases, bowls, beads, cabochons and other items. This type is found in Mexico and Pakistan and is often carved and polished into various items. This material is much more readily available and softer than the gemstone commonly called Black Onyx which is a silica gem.
$30.00
Brazilian Agate Bookends
This set weighs 9 lbs. 13 oz.
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.
$65.00
Sandstone Bookends
This set weighs 6 lbs. 6 oz.
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.
$42.00
Septarian Bookends
The set weighs 9 lbs. 8 oz.
Septarians are commonly composed of a carbonate mineral such as Calcite, a microcrystalline form of Silica as in Flint or Jasper, or an Iron Oxide such as Hematite. These specimens are also known as a concretion which is a type of sedimentary rock. Septarians were formed millions of years ago by sediment forming around a fossil to create a mud ball transforming the fossil into Calcite and Aragonite.
$225.00
Brazilian Agate Bookends
Total weight 5 lbs. 5 oz.
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.
$40.00
The set weighs 7 lbs. 6 oz.
Ammonites are an extinct group of marine animals of the subclass
Ammonoida in the class Cephalopoda, phylum Mollusca. They are excellent
index fossils which are fossils that are used to define and identify geologic
periods. Ammonites' closest living relative is probably not the modern
Nautilus (which they outwardly resemble) but rather the subclass Coleodiea,
which are octopus, squid and cuttlefish.
$18.00
Brazilian Agate Bookends
Total weight is 14 lbs. 4 oz.
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.
$120.00
