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BCR406 Madison Blue Chalcedony

BCR406 Madison Blue Chalcedony


  • Here’s a cool new item, a lovely, rare Madison Blue Chalcedony from Montana. 
  • This is a great rock for a cutting or carving project.  Take note of the last photo to get an idea of how wonderful this rock is when wet.
  • This particular select specimen measures 9″ x 4 1/8″ x 3 1/4″ and weighs nearly 5 3/4 pounds. 

In stock


Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. It has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.

Additional information

Weight 5.75 lbs
Dimensions 9 × 4.125 × 3.25 in

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