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American Machine-Made

Christensen Agate

Christensen Agate marbles are prized for bright, saturated colour and tight flame and swirl patterns.

What to look for

  • Look for crisp colour separation with no muddy blending.
  • Flames and guineas are the most sought constructions.
  • Condition drives value hard here — even light wear is felt in price.

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Just Marbles

Operated by Hardy Apex, Quebec, Canada. Prices in Canadian dollars (CAD). We ship worldwide with tracking.

Customer service: info@hardyapex.com — replies within one business day.

Checkout is processed securely by Shopify over an SSL-encrypted connection. Card details are never handled or stored by Just Marbles. Every marble is a single, individually graded item — photographed as it is, with manufacturing marks and any damage described honestly, and attribution always labelled as attributed, undocumented.