Brazilian Agate Polished
Slabs
SpiritRock Shop
Click on any photo to see a larger version
Polishers Laps Saws
Official PayPal Seal
Item # BAS05091100
Large Polished
6.25" x 5" x 1/4-3/8"
Stunning natural Brazilian
Agate slab!
$12.00
Quantity Available 1 each
There are at least 15 major agate-producing areas in Brazil.
12 of these are located in the 5 most southeastern states of
the country,
Rio Grande do Sul, immediately north of
Uruguay, being the best known. Other areas include
Santa
Catarina
, Paraná, Sao Paolo, and Minas Gerais. Two
other areas are in the state of
Bahia in east central Brazil
and another located in the state of
Roraima in the extreme
northwest. Polyhedroid Agates come exclusively from
Paraiba. Agates were discovered in the late 1920's by a
geologist named B.V. Freyburg with the Geological Survey of
Argentina. Current laws in Brazil prohibit the export of
unfinished agate

The agates from Brazil are mostly mined from decomposed
volcanic ash and basalt from the late Permian age (248-275
million years ago) In Rio Grande do Sul the "agate mines"
are normally just plowed fields in which loose agates are
found and collected. Brazilian agates are very colorful stones
with some of the most beautiful inclusion and structures
imaginable. Agate is very hard and takes an excellent polish.
Sadly, most of the market for Brazilian agates is for the
"dyed" versions of these stones. When you see a pink, teal,
purple or green agate it is dyed not natural. We have a few
dyed bookend sets, but prefer to deal only in natural agates.
We purchase some cut agates from Brazil, ones with the
bottoms cut flat for display or cathedrals(man made cement
type coatings).
Our preference is to locate the agates whole and cut and
polish them in our shop. We generally do 1/2 nodules or
1/3 cuts with polished faces. We like to find those inner
treasures.

We sell most agates this way, but do from time to time
cut some slabs for sale. You can make many slabs out
of one nodule. Our slabs for sale will normally be cut and
not polished. The 3.4 lb perfect agate listed first has the
most brilliant shine...like glass.
These Brazilian Agate slabs are Old Stock Agate, procured through reputable sources and some are even from the Comstock Pewter
Factory in Durango Colorado. They purchased these through  the mid to late 90's, then went out of business a few years later. We
have not seen this nicer quality agate from Brazil for quite a few years. We believe that Brazil is "high grading" their current stock that
they sell, so the collecting world does not have the chance to get the best quality agate at  wholesale pricing. Most of the Brazilian
agate imported lately is lower quality agate that is dyed to make it look better or smaller specimens pre-cut and polished as "export"
agate.  Brazilian agate rough stock has become harder to find in the past few years, and the quality has decreased significantly.
Item # BAS05091101
Large Polished
6 x 4.75 x 1/4 inch
Stunning natural Brazilian
Agate slab!
$12.00
Quantity Available 1 each
Item # BAS05091102
Large Polished
7.25 x 3.75 x 1/4 inch
Stunning natural Brazilian
Agate slab!
$12.00
Quantity Available 1 each
Item # BAS05091104
Thick Polished
6.25 x 6.5 x 3/8 inch
Stunning natural Brazilian
Agate slab!
$19.95
Quantity Available 1 each
Item # BAS05091105
Thick Polished
5.75 x 4 x 7/16 inch
Stunning natural Brazilian
Agate slab!
$17.95
Quantity Available 1 each
Item # BAS05091106
Large Polished
6.25 x 5.5 x 3/16 inch
Stunning natural Brazilian
Agate slab!
$12.00
Quantity Available 1 each
Item # BAS05091107
Thick Polished
6.5 x 5 x 1/4 inch
Stunning natural Brazilian
Agate slab!
$12.00
Quantity Available 1 each
Item # BAS05091108
Thick Polished
6.5 x 5 x 5/16 inch
Stunning natural Brazilian Agate slab!
$17.00
Quantity Available 1 each
Item # BAS05091109
X-Large Polished
9 x 6.5 x 1/4 inch
Stunning natural Brazilian
Agate slab!
$21.95
Quantity Available 1 each
Item # BAS05091110
Thick Polished
4.5 x 3.5 x 3/4 inch
Stunning natural Brazilian Agate slab!
$15.95
Quantity Available 1 each
Item # BAS05091111
Thick Polished
4 x 2.7 x 3/4 inch
Stunning natural Brazilian Agate
slab!
$15.95
Quantity Available 1 each
Click on any  
Picture to
see larger
version

1st Picture in
natural back
light

2nd picture
in front light