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 13.1 Carats 16x14x5mm Calvillo Mexico Gemstone MXG021
13.1 Carats 16 x 14 x 5 mm
Calvillo Mexico Gemstone $150.00
Photo Fire Agate Cabochon 12.4 Carats 19x13x5mm Deer Creek Arizona Gemstone DCG032
12.4 Carats 19 x 13 x 5 mm
Deer Creek Arizona Gemstone $45.00
Photo Fire Agate Cabochon 3.9 Carats 9.5x7.5x4mm Calvillo Mexico Gemstone MXG022
3.9 Carats 9.5 x 7.5 x 4 mm
Calvillo Mexico Gemstone $30.00
Photo Fire Agate Cabochon 4.5 Carats 11x9x3mm Slaughter Mountain Arizona Gemstone SLG074
4.5 Carats 11 x 9 x 3 mm
Slaughter Mnt. Arizona Gem $27.50
Photo Fire Agate Cabochon 3.4 Carats 11x8x2mm Deer Creek Arizona Gemstone DCG034
3.4 Carats 11x8x2mm
Deer Creek Arizona Gem $25.00
Photo Fire Agate Cabochon 11.4ct 24x12x4mm Slaughter Mountain Arizona Gemstone SLG079
11.4 Carats 24 x 12 x 4 mm
Slaughter Mnt. Arizona Gem $22.50

Fire Agate Rough For Sale

Photo Fire Agate Rough Windowed Preforms 78.5 TCW Slaughter Mountain Arizona Gems SLW030
78.5 TCW Preform Cabochons
Slaughter Mnt. Gemstones $27.50
Photo Fire Agate Rough Cabochon Preforms 27.4 TCW Slaughter Mountain Arizona Gemstones SLW031
27.4 TCW Preform Cabochons
Slaughter Mnt. Gemstones $25.00

Fire Agate Mineral Specimens For Sale

Photo Fire Agate Gemstone Mineral Specimen Calvillo Mexico Gem Rough Nodule MXM004
Specimen - Fire Agate Nodule
Calvillo Mexico Gemstone $125.00
Photo Fire Agate Cabochon Sagenite Spray Mineral Specimen Calvillo Mexico Gemstone MXM003
Specimen - Sagenite Crystals
Calvillo Mexico Gemstone $39.95
Photo Fire Agate Rough Gemstone 10.3g Mineral Specimen Deer Creek Arizona DCM020
Specimen - 10.3g Fire Agate Display
Deer Creek Arizona Gemstone $19.95

Fire Agate Carvings For Sale

Photo Fire Agate Cabochon Gemstone Carving 65.2ct Deer Creek Arizona Gem DCC001
Large Fire Agate Carving
65.2ct Deer Creek AZ Gem $100.00
Photo Fire Agate Chalcedony Quartz Crystal Carving 131.2ct Deer Creek Arizona Gem DCC002
Large Fire Agate Carving
131.2ct Deer Creek AZ Gem $74.95
Photo Fire Agate Gemstone Carving 13.5ct Claw Shaped Slaughter Mountain AZ Gem SLC002
Fire Agate Claw Shaped CArving
13.5ct Slaughter Mnt. Gem $67.50
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