|
|
|
|
|
|
Selenite Pieces 1-3"
|
|
|
Selenite is a form of gypsum whose crystal structure forms long 'rods' or fibers that are capable of transmitting light via internal reflection much like fiber optic cable. These are short (1"-3" long) pieces of selenite, good for collections or experiments.
Not that selenite can be fragile and can 'shed' sharp fibers and so should be kept out of the hands of children. Price is per piece.
Email a question about this item
|
|
|
|
|
|
|
|
|
|
2" x 3" Suede Drawstring Bag
|
|
|
Suede Fabric bag 2" x 3" in size. Great for storing small numbers of rocks or crystals.
|
|
|
|
|
|
|
|
|
|
Obsidian Replica Arrowhead
|
|
|
Obsidian is a type of natural glass. Its main component is quartz (Si02); howveer it has no crystal structure. It is formed when lava cools very quickly. Obsidian solidifies as a glass because it doesn't have enough time for crystals to form before it cools to a solid.
Obsidian was very useful to primitive man and to the American Indians because it could be chipped and fractured in any direction, making material to shape tools and weapon points. When arrowheads were made, obsidian was the favorite material to use in regions where deopsits existed maininWyoming, Oregon, California, texas and Mexico.
Arrowhead is made of genuine Obsidian but is a replica arrowhead. It is 1-1/2" in lenght but samples will vary. Price is per replica arrowhead.
Email a question about this item
|
|
|
|
|
|
|
|
|
|
3" x 4" Faux Suede Drawstring Bag
|
|
|
Suede cloth bag measuring 3" x 4". Great for storing a number of tumbled rocks and crystals.
|
|
|
|
|
|
|
|
|
|
Quartz Crystal Titanium Color
|
|
|
Quartz crystal is a silicon dioxide, Si02. The work crystal in Greek means clear ice. A near perfect quartz crystal will form only if it is able to grow unobstructed in a cavity below the Earth's surface. The hexagonal structure of quartz crystal is directly related to the shape of its internal arrangement of atoms.
Quartz crystals are piezoelectric, and vibrate at a precise number per second when exposed to electricity.
This quartz crystal point has been plated with titanium ions that gives it an iridescent effect.
|
|
|
|
|
|
|
|
|
|
Agate Titanium Replica Arrowhead 1"
|
|
|
Plating Agate arrowheads with Titanium Ions produces a beautiful iridescent metallic effect.
Agate belongs to the quartz family. Quartz is composed primarily of microscopically crystallized Silica (SiO2) and is formed when silica-bearing solutions infiltrate porous rocks and sediments.
Agate was useful to early cultures because it could be chipped and fractured in any direction, making it a perfect material to shape tools and weapon points.
Replica arrowheads are 1 to 1.5" in length.
|
|
|
|
|
|
|
|
|
|
Fulgurite - Fossilized Lightning 1"
|
|
|
Sand (silicon dioxide) melts at 1,605 degrees C (3,002 degrees F), but the temperature in a bolt of lightning can reach 30,000 Kelvin.
When lightning strikes sand the particles can melt and fuse together in less than a second. If conditions are right, the fused sand can take on the form of the lightning bolt. Because the shapes of fulgurite specimens relect the paths of the lightning bolts as they are dispersed into the ground, fulgurite is sometimes called 'fossilized lightning'.
The name fulgurite comes from th Latin word fulgur which means 'lightning flash' or "thunderbolt." Although lightning strikes earth at least a million times a day, only rarely does fulgurite form. Origin: Sahara Desert, Africa.
Email a question about this item
|
|
|
|
|
|
|
|
|
|
Amber Glass Sphere, 40mm Diameter with Stand
|
|
|
Attractive 40mm diameter amber colored glass sphere. Includes wood stand.
|
|
|
|
|
|
|
|
|
|
Clear Glass Sphere, 40mm Diameter with Stand
|
|
|
Attractive 40mm diameter clear glass sphere. Includes wood stand.
|
|
|
|
|
|
|
|
|
|
Green Glass Sphere, 40mm Diameter with Stand
|
|
|
Attractive 40mm diameter green colored glass sphere. Includes wood stand.
Email a question about this item
|
|
|
|
