Ellensburg Blue Agate Value Guide

The Ellensburg Blue Agate is the third rarest gemstone in the world, found exclusively in the Kittitas Valley of Washington state. Formed by ancient volcanic activity, these specimens are prized for their unique blue hue and botryoidal features.

What Is Ellensburg Blue Agate Worth?

The typical price range for Ellensburg Blue Agate is $280 - $300 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• The intensity and saturation of the blue color significantly impact the $280-$300 price range.
• The presence of well-defined botryoidal features increases the desirability for collectors.
• Overall clarity and the absence of internal fractures or heavy matrix inclusions.
• The size and weight of the raw specimen, as larger high-quality pieces are increasingly difficult to find.

How to Identify Ellensburg Blue Agate?

• Look for the distinct sky-blue to cornflower-blue color characteristic of genuine Kittitas Valley chalcedony.
• Examine the specimen for botryoidal (grape-like) surface textures typical of raw Ellensburg Blue.
• Verify the stone's hardness, as true chalcedony will rank between 6.5 and 7 on the Mohs scale.
• Check for a slight translucency when held up to a light source, a hallmark of high-quality specimens.

History of Ellensburg Blue Agate

Found exclusively in the Kittitas Valley of Washington state, this rare gemstone was formed through volcanic activity millions of years ago. It is the third rarest gemstone in the world and was highly valued by the local Native American tribes long before it became a popular collector's item in the 20th century.