Richardson Ranch (Priday Ranch), Madras, Jefferson Co., Oregon

11.1 x 10.4 x 4.5 cm
4.4 x 4.1 x 1.8 in

$100      Click here to order this mineral.                                                                                                                                                              

A polished half of a Priday Thunderegg with both red and olive green plumes in intricate patterns. The plumes are within chalcedony that ranges in color from nearly white to a light blue/gray to colorless. In most places, the plumes are three dimensional as they can be seen to a depth of a couple millimeters. The surrounding Rhyolite is generally an ocher color with small mottled areas exhibiting olive green. The surface has a very high polish.

Condition: Very Good

Flaws: There are some hairline cracks which are visible in the photos.

This mineral is also found in the following galleries: Minerals From the United States | Quartz | Polished & Worked | Minerals Priced Between 100 and 199 Dollars