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!

Brazilian_Agate_Thick_Polished_Slabs-1-2
Brazilian_Agate_Thick_Polished_Slabs-1-1
Item # TBAS05091007D-1-1
Item # TBAS05091007D-1-2
Item # TBAS05091007D-1-1 Item # TBAS05091007D-1-2
Item # TBAS05091007D

Thick Polished 5.5 x 3.5 x 7/8 inch 1.23lb natural Brazilian Agate slab

$22.00
Comstock Pewter Factory

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Item # TBAS01117911-1-1
Item # TBAS01117911-1-2
Item # TBAS01117911-1-1 Item # TBAS01117911-1-2
Item # TBAS01117911

Thick Polished Face Natural Brazilian Agate Slab

$22.00

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

Item # TBAS0413W1001-1-4
Item # TBAS0413W1001-1-2
Item # TBAS0413W1001-1-3
Item # TBAS0413W1001-1-1
Item # TBAS0413W1001-1-4 Item # TBAS0413W1001-1-2 Item # TBAS0413W1001-1-3 Item # TBAS0413W1001-1-1
Item # TBAS0413W1001

Thick Polished Natural Brazilian Agate slab

$41.00

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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)

Item # TBAS05091000-1-2
Item # TBAS05091000-1-1
Item # TBAS05091000-1-2 Item # TBAS05091000-1-1
Item # TBAS05091000

Thick Polished Natural Brazilian Agate Slab 7.25 x 6 x 0.94 inch 2.87lb

$23.00
Comstock Pewter Factory

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Item # TBAS05091001S-1-1
Item # TBAS05091001S-1-2
Item # TBAS05091001S-1-1 Item # TBAS05091001S-1-2
Item # TBAS05091001S

Thick Polished Natural Brazilian Agate Slab 5.9 x 5.2 x 3/4 inch 1.66lb

$23.00
Comstock Pewter Factory

Item # TBAS050910052-1-1
Item # TBAS050910052-1-2
Item # TBAS050910052-1-1 Item # TBAS050910052-1-2
Item # TBAS050910052

Thick Polished Natural Brazilian Agate Slab 9 x 4.5 x 11/16 inch 1.85lb

$23.00
Comstock Pewter Factory

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Item # TBAS0411V2001-1-2
Item # TBAS0411V2001-1-1
Item # TBAS0411V2001-1-2 Item # TBAS0411V2001-1-1
Item # TBAS0411V2001

Thick Polished Crystal Center Agate with Fortification Lines

$24.00
Comstock Pewter Factory

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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)

Item # TBAS05091010Z-1-2
Item # TBAS05091010Z-1-1
Item # TBAS05091010Z-1-2 Item # TBAS05091010Z-1-1
Item # TBAS05091010Z

Thick Polished Natural Brazilian Agate Slab 6 x 5 x 11/16 inch 1.41lb

$26.00
Comstock Pewter Factory

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Item # TBAS0411L3001-1-1
Item # TBAS0411L3001-1-3
Item # TBAS0411L3001-1-3
Item # TBAS0411L3001-1-1 Item # TBAS0411L3001-1-3 Item # TBAS0411L3001-1-3
Item # TBAS0411L3001

Thick Polished Crystal Center Agate with Fortification and Level Lines !

$24.00
Comstock Pewter Factory

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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)

Item # TBAS05091014O-1-1
Item # TBAS05091014O-1-2
Item # TBAS05091014O-1-1 Item # TBAS05091014O-1-2
Item # TBAS05091014O

Thick Polished Natural Brazilian Agate Slab 6 x 4.5 x 3/4 inch 1.34lb

$22.00
Comstock Pewter Factory

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Item # TBAS0411L5001-1-1
Item # TBAS0411L5001-1-2
Item # TBAS0411L5001-1-1 Item # TBAS0411L5001-1-2
Item # TBAS0411L5001

Thick Polished Agate with Fortification and Level Inclusions

$22.00
Comstock Pewter Factory

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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)

Item # TBAS0413MB5461-1-3
Item # TBAS0413MB5461-1-2
Item # TBAS0413MB5461-1-1
Item # TBAS0413MB5461-1-3 Item # TBAS0413MB5461-1-2 Item # TBAS0413MB5461-1-1
Item # TBAS0413MB5461

Thick Polished Crystalline Agate from Brazil

$29.00

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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)

Item # TBAS0411TSV0001-1-2
Item # TBAS0411TSV0001-1-1
Item # TBAS0411TSV0001-1-2 Item # TBAS0411TSV0001-1-1
Item # TBAS0411TSV0001

Thick Polished Carneilian Agate with Fortification Lines

$26.00
Comstock Pewter Factory

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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)

Item # TBAS0411P7001-1-2
Item # TBAS0411P7001-1-1
Item # TBAS0411P7001-1-2 Item # TBAS0411P7001-1-1
Item # TBAS0411P7001

Thick Polished Agate with Random Level Lines and Inclusions

$22.00
Comstock Pewter Factory

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This slab weighs 1 lb (467g)
measures 4.5 x 4.4 x 0.88" (11.6 x 11.2 x 2.2 cm)

Item # TBAS0411Q6001-1-2
Item # TBAS0411Q6001-1-1
Item # TBAS0411Q6001-1-2 Item # TBAS0411Q6001-1-1
Item # TBAS0411Q6001

Thick Polished Agate with Fortification and Organic Inclusions

$22.00
Comstock Pewter Factory

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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)

Item # TBAS0411N9001-1-2
Item # TBAS0411N9001-1-1
Item # TBAS0411N9001-1-2 Item # TBAS0411N9001-1-1
Item # TBAS0411N9001

Thick Polished Agate with Drusy Center Vug

$22.00
Comstock Pewter Factory

This slab weighs 1.2 lb (545g)
measures 5 x 3.9 x 0.95" (12.9 x 9.8 x 2.4 cm)

Item # TBAS0411X8001

Thick Polished CrystallineAgate with Drusy with Goetite Vug!

$22.00

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)

Item # TBAS0413BZ2221-1-4
Item # TBAS0413BZ2221-1-4
Item # TBAS0413BZ2221-1-4
Item # TBAS0413BZ2221-1-4
Item # TBAS0413BZ2221-1-4 Item # TBAS0413BZ2221-1-4 Item # TBAS0413BZ2221-1-4 Item # TBAS0413BZ2221-1-4
Item # TBAS0413BZ2221

Thick Polished Crystalline Agate from Brazil

$21.00

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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)

Item # TBAS04110551-1-1
Item # TBAS04110551-1-2
Item # TBAS04110551-1-1 Item # TBAS04110551-1-2
Item # TBAS04110551

Thick Polished Carnelian Crystalline Agate with Two Vugs !

$29.00

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This slab weighs 1.1 lb (502g)
and measures 6.5 x 3 x 1" (16.5 x 7.7 x 2.5 cm)

Item # TBAS04115451-1-4
Item # TBAS04115451-1-2
Item # TBAS04115451-1-3
Item # TBAS04115451-1-1
Item # TBAS04115451-1-4 Item # TBAS04115451-1-2 Item # TBAS04115451-1-3 Item # TBAS04115451-1-1
Item # TBAS04115451

Thick Polished Whiteskin Crystalline Agate with Vug and Level Lines!

$32.00

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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