Category:Synthetic gemstones derived from Mt. St. Helens volcanic ash

Media in category "Synthetic gemstones derived from Mt. St. Helens volcanic ash"

The following 3 files are in this category, out of 3 total.

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  Helenite (synthetic gemstone derived from Mt. St. Helens volcanic ash) 3.jpg 1,622 × 1,033; 862 KB
  
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  Helenite (synthetic gemstone derived from Mt. St. Helens volcanic ash) 5.jpg 2,065 × 1,314; 1.55 MB
  
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  Helenite (synthetic gemstone derived from Mt. St. Helens volcanic ash) 6.jpg 2,154 × 1,505; 1.59 MB