Agate from Mexico - 86 mm – Calandria - polished half-stone from Chihuahua

Natural agate from Mexico, sourced from the Calandria region of Chihuahua. A polished half-stone with a beautiful, contrasting texture and deep colors. Each piece is unique, displaying the characteristic bands and color transitions typical of Mexican agates. The photos show the product being offered.

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Agate from Mexico (Calandria) – polished half from Chihuahua

Description and Origin

This specimen is a natural agate from Mexico, originating from the Calandria region in the state of Chihuahua. This area is famous for producing some of the most beautiful agates in the world, characterized by rich colors and clearly defined banded zones. The polished half reveals exceptional details of its internal structure.

Characteristics and Specifications

Dimensions: approx. 186 × 54 × 32 mm
Weight: approx. 180 g
Origin: Mexico, Calandria (Chihuahua)
Condition: natural, uncolored
The specimen shown is the one pictured.

Formation Process

Agates from the Chihuahua region form in gas cavities within ancient volcanic lava flows, where the slow crystallization of silica creates characteristic bands of chalcedony. Subsequent stages of mineralization give them a rich variety of colors—ranging from cream and brown to red and orange tones. As a result, Mexican agates are among the most recognizable and highly valued in the world.

Collectible Value

Agates from Calandria are a rare collector’s item—valued for their exceptional quality, unique patterns, and distinctive structure. They are ideal for geological collections, museum displays, and private collections. Due to their contrasting colors and the transparency of their layers, they are also widely used in education and research on the origin of volcanic agates.

Natural Characteristics of the Stone

Visible cracks, tiny voids, or inclusions are a natural part of the agate’s structure and confirm its authentic origin. Each half features a unique pattern of bands, representing a one-of-a-kind record of geological processes that took place millions of years ago.