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Science Education Center of California
Science Education Center
of California
3001 Chapel Hill Road
Orange, CA 92867
714-292-6845
krawitz@sprynet.com
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Science Education Center of California
Stone
Carvings & Jewelry
Goblets |
![click to see larger image](images/thumbnails/cup_2.jpg) |
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![click to see larger image](images/thumbnails/cup_1.jpg) |
All photos:
Locality: Large economic deposits of rough, banded
onyx are found in Pakistan and Mexico.
Composition: Onyx is a colored variety of microcrystalline
calcite.
Dimensions: 4 7/8 inches tall and 3 inches wide
Price: $12 each
: Each goblet is lathe
carved (inside and outside) and carefully polished out of
a single piece of onyx. Since the goblets are less fragile
than glass and have a high heat capacity, they are ideal for
keeping drinks either cold or hot for extended periods of
time. |
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Goblets in Cases |
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![click to see larger image](images/thumbnails/case_1.jpg) |
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A case
of goblets makes an ideal gift for weddings, holidays or other
occasions. Stop by the Science Education Center to hand pick
the goblets for your case.
Price: $89/case |
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Vases |
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![click to see larger image](images/thumbnails/vase_1.jpg) |
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All photos:
Locality: The large economic deposits of fossiliferous
limestone (see upper left
photo) and rough, banded onyx are found mainly in Pakistan
and to a lesser extent in Mexico.
Composition: Fossiliferous limestone is a natural
aggregate of crushed and fossilized sea creatures preserved
in a matrix of calcium carbonate. Onyx is a colored variety
of microcrystalline calcite.
Prices:
Dimensions (height x width) |
Price |
Flower vase 8 inches by 3 inches |
$18 |
Flower vase 8 inches by 4 inches |
$24 |
Flower vase 10 inches by 5 inches |
$32 |
Flower vase 12 inches by 5 inches |
$75 |
Larger sizes are individually priced |
$99 - $600 |
: Each stone vase is
lathe carved (inside and outside) and carefully polished out
of a single piece of fossiliferous limestone or banded onyx.
: This colorful
banded onyx is the cold water deposition of calcium carbonate
saturated with iron in the oxidized (red) and reduced (green)
states. The onyx is similar to stalagmites, stalactites and
travertine.
Source: |
Larry McMaster, Geologist, MS. |
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Bowling Green State University, Ohio |
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These late Mesozoic marine fossils, 240 million years old,
lived in the Tethys Sea between the colliding Sub-continent
of Pakistan-India and Asia. The matrix that cements the fossils
together is fragments of other fossils broken up in the surf
prior to its lithification into limestone.
The circular fossils with internal radiating dividers are
corral. The chambered fossils are snails. The arcuate fossils
are the cross-sections of clams.
Source: |
Larry McMaster, Geologist, MS. |
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Bowling Green State University, Ohio |
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Dendritic Minerals |
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![click to see larger image](images/thumbnails/paint_3.jpg) |
![click to see larger image](images/thumbnails/paint_2.jpg) |
![click to see larger image](images/thumbnails/paint_1.jpg) |
Uses: The dendritic minerals
shown above make excellent bookends and stand alone decorative
items. When placed horizontally (base removed), the dendritic
specimens can be placed under beverages and used as casters.
Background: The name dendrite comes
from the Greek word dendro (tree like). The black dendritic
patterns (see above photos) are usually composed of a mineral
called psilomelane which forms on the bedding or fracture
planes of some limestones. The psilomelane (black dendritic
material that appears on and inside the limestone) is composed
of a hydrous barium manganese oxide. The chemical composition
of the psilomelane is BaMn+2Mn+48O16(OH)4.
Typical Sizes: 5 - 10 inches long, 5 - 8
inches high, and ½ - 1 inch thick
Prices: From $8 - $20 |
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Semi-precious Jewelry |
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![click to see larger image](images/thumbnails/neck_1.jpg) |
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All photos:
Locality: |
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Polished and drilled stones from around the world |
Composition: |
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Clear: Rock crystal |
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Red: Carnelian and coral |
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Blue: Amazonite and quartz |
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Violet: Lapis Lazuli |
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Green: Aventurine and malachite |
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Golden: Tiger's Eye |
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Purple: Amethyst |
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Green and purple: Fluorite |
Price: |
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Necklaces are $14 each |
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Earrings are $12/pair |
The Science Education
Center has dozens of natural stone necklaces in stock (No
glass or plastics) in the latest colors and sizes. Our earrings
are carved out of fluorite and are perfectly matched. |
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Calcite & Fluorite
Candle Holders |
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![click to see larger image](images/thumbnails/candle_2.jpg) |
![click to see larger image](images/thumbnails/candle_1.jpg) |
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Left and center photo:
Locality: Calcite: Zacatecas, Mexico
Fluorite: Mina Navidad, Rodeo; Durango, Mexico
Composition: Calcite: CaCO3
(Yellow)
Fluorite: CaF2 (Blue-green)
Size: 3 - 6 inches in diameter and 3 - 5 inches high.
Price: Calcite candleholders are $8
Fluorite candleholders are $14 - 16
Simple and ascetically
pleasing in appearance, the candle holders are ideal for decorating
tables, counter tops, furniture and the like. |
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Animal Carvings |
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![click to see larger image](images/thumbnails/animal_7.jpg) |
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![click to see larger image](images/thumbnails/animal_3.jpg) |
![click to see larger image](images/thumbnails/animal_8.jpg) |
All photos:
Locality: |
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Rough material comes from all over the world |
Composition: |
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Clear: Rock crystal
Red: Carnelian and jasper
Blue: Quartz
Violet: Lapis Lazuli
Gold: Tiger's Eye
Purple: Amethyst
Green: Aventurine, malachite and zoisite
Green and purple: Fluorite
Light brown: Jasper
Yellowish green: Serpentine |
Price: |
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All small animal carvings of the type shown above are
$14 each. |
Over 200 animal carvings
are available at the Science Education Center, and each has
been meticulously carved out of blocks of ornamental or semi-precious
stone. The eight photos shown above are a representative sample
of some of the variety of carvings available in the $14 price
range. |
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Carvings from Gem-quality
Serpentine |
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![click to see larger image](images/thumbnails/turtle_2.jpg) |
![click to see larger image](images/thumbnails/turtle_1.jpg) |
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All photos:
Locality: The group of minerals that are collectively
called serpentine comprise several polytypes and are found
in many localities. To complicate matters, actinolite (nephrite
variety) has a composition that is quite similar to a number
of serpentine varieties.
Composition: The serpentine group is composed of hydrated
magnesium silicates that are rich in iron. The composition
corresponds to the following hydrous magnesium iron silicate:
(Mg, Fe)3Si2O5(OH)4
Price: The serpentine carvings shown in the diagram
are priced in the $40 - $50 dollar range. Larger carvings
are also available and command prices in the $80 - $100+ range.
Unlike the small animal
carvings, these carvings are composed of multicolored stone,
which is carved to maximize the effects of the color change.
The lightly colored sections of stone have been carved into
the shape of an egg, while the bright reds and greens of the
serpentine have been carved into the shape of an animal. The
resulting creation looks like an animal hatching out of its
shell. The details are so integrate that many customers assumed
that the animal carvings were well preserved fossilized animals,
forever preserved in stone. |
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Stone Spheres |
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![click to see larger image](images/thumbnails/sphere_1.jpg) |
![click to see larger image](images/thumbnails/sphere_2.jpg) |
![click to see larger image](images/thumbnails/sphere1.jpg) |
Locality: |
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Massive fluorite and agate suitable for
cutting comes from many localities. Some of the most productive
mining regions in the last few years have been in Brazil,
Mexico and China. |
Composition: |
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Jasper: SiO2 (Multi-colored)
Fluorite: CaF2 (Blue-Green) |
Size: |
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1 - 3 inches in diameter |
Price: |
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$10 - 40 each |
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Rare and Specialty Spheres |
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Locality: |
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Scheelite: Atolia, CA
Lepidolite: Stewart Lithia Mine, Pala, CA
Obsidian: Northern California
Fluorescent material: Franklin, NJ
Cobaltite with Native silver: Cobalt, Ontario |
Composition: |
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See fluorescent mineral section and background below |
Size: |
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2 - 6 inches in diameter |
Price: |
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$80 - $600 each |
: Several years ago
the Science Education Center was able to purchase several
tons of Franklin fluorescent material from a 50 year-old collection.
Some of the finest pieces (suitable for sphering) were hand
selected in the winter of 2003 and made into spheres. Over
40 spheres are now available and consist of franklinite, willemite,
zincite, calcite and a few rare minerals. Unfortunately, this
rough material will not be easily replenished and we do not
have a ready supply of fluorescent mineral rough for the future.
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Butterflies |
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![click to see larger image](images/thumbnails/butterflys.jpg) |
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Locality: Our butterflies
contain Brazilian agate, which has been enhanced to produce
a bright bluish color.
Composition: A flexible metal frame containing slices
of Brazilian agate.
Dimensions: 2.5 - 3 inches long; 2.5 to 3.5 inches
wide, and about 2 inches high
Price: $11
: The butterfly's flexible
frame and legs allows for an ascetically pleasing display
on either a horizontal or vertical surface. |
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