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Opal (variety hyalite) on quartz<br />Monroe County, Indiana, USA<br />geode is 11  cm, the opal area is 2 cm<br /> (Author: Bob Harman)

Opal (variety hyalite) on quartz
Monroe County, Indiana, USA
geode is 11 cm, the opal area is 2 cm
(Author: Bob Harman)

Dimensions: 1295 x 1141
File size: 246.3 kbytes
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