Brazilian Agate Thick Polished Slabs
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Museum Specimens
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Many of these Brazilian Agate slabs are Old Stock Agate 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. All
slabs on this page are polished 1 side only unless otherwise noted.

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. Some of these may
have small edge chips from being bulk stored in the Comstock warehouse, but they do not distract
from the beauty of these slabs. Natural fractures are common in Brazilian Agates. 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 with the quality decreasing significantly, it's nice to find
some desirable old stock!
Item # TBAS05091000
Thick Polished Natural Brazilian Agate Slab
7.25 x 6 x 0.94 inch 2.87lb

$23.00
Item # TBAS05091001S
Thick Polished Natural Brazilian Agate Slab
5.9 x 5.2 x 3/4 inch 1.66lb

$23.00
Comstock Pewter Factory
Comstock Pewter Factory
Item # TBAS050910052
Thick Polished Natural Brazilian Agate Slab
9 x 4.5 x 11/16 inch 1.85lb

$23.00
Item # TBAS05091007D
Thick Polished
5.5 x 3.5 x 7/8 inch
1.23lb natural Brazilian Agate slab

$22.00
Comstock Pewter Factory
Item # TBAS05091014O
Thick Polished Natural Brazilian Agate Slab
6 x 4.5 x 3/4 inch 1.34lb

$22.00
Item # TBAS05091010Z
Thick Polished Natural Brazilian Agate Slab
6 x 5 x 11/16 inch 1.41lb

$26.00
Comstock Pewter Factory
Item # TBAS01117911
Thick Polished
Face Natural Brazilian Agate
Slab

$22.00
Comstock Pewter Factory
Item # TBAS0411V2001
Thick Polished Crystal Center Agate with
Fortification Lines

This slab weighs 0.89 lb (404g)
and measures  6.2 x 3 x 0.72" (15.8 x 7.8 x 1.8 cm)

$24.00
Comstock Pewter Factory
Item # TBAS0411L3001
Thick Polished Crystal Center Agate with Fortification
and Level Lines !

This slab weighs 1.27 lb (579g)
and measures 5 x 4.8 x 0.83" (12.8 x 12.2 x 2.1 cm)

$24.00
Comstock Pewter Factory
Comstock Pewter Factory
Item # TBAS0411L5001
Thick Polished Agate with Fortification and
Level Inclusions

This slab weighs 0.99 lb (451g)
and measures 5.5 x 3.4 x 0.87" (14 x 8.6 x 2.2 cm)

$22.00
Item # TBAS0411TSV0001
Thick Polished Carneilian Agate with
Fortification Lines
This slab weighs 1.2 lb (551g)
and measures 4.6 x 3.9 x 0.95" (11.8 x 9.9 x 2.4 cm)

$26.00
Comstock Pewter Factory
Comstock Pewter Factory
Item # TBAS0411Q6001
Thick Polished Agate with Random
Level Lines and Inclusions
This slab weighs 1 lb (467g)
measures 4.5 x 4.4 x 0.88" (11.6 x 11.2 x 2.2 cm)

$22.00
Item # TBAS0411M7001
Thick Polished Agate with Fortification
and Organic Inclusions
This slab weighs 1.43 lb (649g)
and measures 5.7 x 4.5 x 0.99" (14.6 x 11.4 x 2.5 cm)

$22.00
Item # TBAS0411X8001
Thick Polished CrystallineAgate with
Drusy with Goetite Vug!
This slab weighs 1.23 lb (560g)
and measures 4.8 x 4 x 0.89" (12.3 x 10.4 x 2.2 cm)

$22.00
Comstock Pewter Factory
Comstock Pewter Factory
Item # TBAS0411N9001
Thick Polished Agate with Drusy
Center Vug
This slab weighs 1.2 lb (545g)
measures 5 x 3.9 x 0.95" (12.9 x 9.8 x 2.4 cm)

$22.00
Item # TBAS04110551
Thick Polished Carnelian Crystalline
Agate with Two Vugs !
This slab weighs 1.1 lb (502g)
and measures 6.5 x 3 x 1" (16.5 x 7.7 x 2.5 cm)
$29.00
Item # TBAS04115451
Thick Polished Whiteskin Crystalline
Agate with Vug and Level Lines!
+++
RARE NATURAL GREEN on back
This slab weighs 0.46 lb (211g)
and measures 4 x 2.7 x 0.76" (10.2 x 6.8 x 1.9 cm)

$32.00
Comstock Pewter Factory
Item # TBAS0413W1001
Thick Polished Natural Brazilian Agate slab

$41.00
Stunning Polyhedroid looking design in this special slab
from our personal collection! This slab is almost 1 inch
thick ... A special display piece!
This piece weighs 25.5oz or 1.59 lb (725g)
and measures
5.6 x 5.7 x 0.93 inches (14.3 x 14.5 x 2.3cm)
Comstock Pewter Factory
Item # TBAS0413MB5461
Thick Polished Crystalline Agate from Brazil

This slab weighs 11.8oz or 0.73 lb (334g)
and measures 4.4 x 3.4 x 0.75" (11.1 x 8.7 x 1.9cm)

$29.00
Item # TBAS0413BZ2221
Thick Polished Crystalline Agate from Brazil

This slab weighs 9.1oz or 0.57 lb (259g)
and measures 3.9 x 2.8 x 0.77" (10.1 x 7.2 x 1.9cm)

$21.00
Nice banding design in this slab from our Agate
collection! This slab is almost 1 inch thick ... A pretty
display piece!
Natural fracture on back (right photo)
This piece weighs 0.7 lb
and measures
3.7 x 2.7 x 1 inches