This piece of windowed fire agate rough from Aguascalientes, Mexico, measures 35.02 mm by 33.36 mm by 7.36 mm and weighs 69.65 carats, making it a nice specimen for collectors and lapidary artist alike. It has been cut and roughly polished to display the internal fire. Its windowed structure reveals a multi-hued fire pattern featuring a variety of colors including gold, orange and green. These captivating displays of color shift with changes in lighting and perspective. This piece exemplifies the unique beauty and complex characteristic of fire agates, ideal for adding a rare and dynamic element to any mineral collection in its present state or in use in a jewelry design if properly cut and polished into a finished gemstone.
This fire agate, locally referred to as Ágata de Fuego, comes from the Calvillo area in Aguascalientes, Mexico, a region esteemed for its production of exceptional fire agates. These gemstones are highly regarded for their vibrant color displays and intricate mixed color variations that capture the natural beauty unique to this locale. Weighing over 65 carats, this rough windowed specimen offers collectors and connoisseurs a captivating example of the complex patterns and fiery iridescence that make Aguascalientes fire agates prized among gemstone enthusiasts. Its origin and distinct visual qualities emphasize its value both as a specimen and as a material source that could be used in fine jewelry.
The photographs highlight the stone’s brilliance under artificial full spectrum indoor lighting and outdoors in natural sunlight to best reveal its internal fire. Magnified macro photos are also used to show detailed visuals of the stone. The vibrant colors within fire agates arise from the Schiller effect, like what is seen in mother-of-pearl and opals. This phenomenon results from alternating layers of silica and iron oxide that diffract light, creating the interference patterns known as fire. Optimal lighting enhances this color play, while in dimmer conditions the stone will appear less vivid and darker with a brownish hue.
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