Fire agate, a variety of chalcedony with an ancient and fiery beginning, is an all natural gemstone found only in certain areas of Arizona, northern Mexico, and other parts of the southwestern United States. Approximately 24-36 million years ago these areas were subjected to massive volcanic activity during the Tertiary Period. The fire agates were formed during this period of vulcanism when hot water, saturated with silica and iron oxide, repeatedly filled cracks and bubbles in the surrounding rock, often forming a botryoidal (grape-like) growth.

Fire agate gemstones have beautiful iridescent rainbow colors, similar to opal, with a measurement of hardness on the MOHS scale of between 6.5 to 7 which helps prevent cracking and scratching. The colors found within fire agates, created by the Schiller effect as found in mother-of-pearl and fire opal, is caused by the alternating silica and iron oxide layers which diffract and allow light to pass which forms the interference of colors known as fire. Besides the thin limonite and/or geothite iron oxide layers there is no actual objects inside the gems, the visual effects arise from light interference within the microstructure crystal layering of the gem.

Fire Agate Gemstones For Sale

Photo Fire Agate Cabochon 6.3 Carats 18x13x2mm Deer Creek Arizona Gemstone DCG036
6.3 Carats 18 x 13 x 2 mm
Deer Creek Arizona Gem $325.00
Photo Fire Agate Cabochon 12.7 Carats 20x16x4mm Deer Creek Arizona Gemstone DCG028
12.7 Carats 20 x 16 x 4 mm
Deer Creek Arizona Gem $225.00
Photo Fire Agate Cabochon 8.8ct 15x13x4mm Slaughter Mountain Arizona Gemstone SLG082
8.8 Carats 15 x 13 x 4 mm
Slaughter Mountain AZ Gem $85.00
Photo Fire Agate Cabochon Gem 2.6 Carats 12x6x2mm Deer Creek Arizona Gemstone DCG038
2.6 Carats 12 x 6 x 2 mm
Deer Creek Arizona Gem SOLD
Photo Fire Agate Cabochon Gem 3.7 Carats 13x8x2.5mm Calvillo Mexico Gemstone MXG027
3.7 Carats 13 x 8 x 2.5 mm
Calvillo Mexico Gem SOLD

Fire Agate Rough For Sale

Photo Beautiful Fire Agate Rough High Grade Natural Gemstone Slaughter Mountain Arizona SLR179
High Grade Fire Agate Rough
94.9g Slaughter Mountain AZ $250.00
Photo Fire Agate Rough Large Polished Windowed 105 Carats Deer Creek AZ Gem DCW005
Windowed Fire Agate Rough
105 Carats Deer Creek AZ Gem SOLD
Photo Fire Agate Rough 3pc 86.4g High Quality Gemstones Slaughter Mountain AZ SLR185A
Fire Agate Gemstone Rough 3pc
86.4g Slaughter Mountain AZ $69.95

Fire Agate Mineral Specimens For Sale

Photo Spectacular Fire Agate Rough Gemstone Specimen Slaughter Mountain Arizona SLM029
Fire Agate Cabinet Display Specimen
Slaughter Mountain Arizona $500.00
Photo Massive 5.6 Pound Fire Agate Rough Mineral Specimen Slaughter Mountain AZ SLM016
Massive 5.6 Pounds Fire Agate Specimen
Slaughter Mountain Arizona $325.00
Photo Rare Chihuahua Mexico Fire Agate Gemstone Mineral Display Gem Specimen MXM002
Rare Chihuahua Mexico Fire Agate
98g Mexican Gem Specimen $150.00
Photo Fire Agate Gemstone Mineral Specimen Calvillo Mexico Gem Rough Nodule MXM004
Natural Fire Agate Nodule
Calvillo Mexico Specimen $125.00

Fire Agate Carvings For Sale

Photo Breathtaking Fire Agate Gemstone Carving A+ Gem Quality Collectors Piece SLM036
Breathtaking Fire Agate Gem Carving
Slaughter Mountain AZ $2000
Photo Fire Agate Gemstone Scorpion Carving by Ryszard Krukowski Gem Display SLC001
Fire Agate Gemstone Scorpion Carving
by Ryszard Krukowski $1250
Photo Colorful Fire Agate Gemstone Carving 51.2 Carats Deer Creek Arizona Gem DCC003
Colorful Fire Agate Gemstone Carving
51.2ct Deer Creek Gemstone SOLD

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