Eagle Rock Plume Agate Rough in the black marcasite variety, from the original Bill Quach collection of Central Oregon old stock. With this variety, look for the white inclusions visible from outside, which typically reveal black marcasite plume and often blue agate with marcasite running through it. A true old stock cutter from Prineville-area history.
SPECIFICATIONS
• Material: Natural Eagle Rock Plume Agate
• Dimensions: 114mm x 68mm x 52mm (Inches - 4.5" x 2.7" x 2.0")
• Weight: 561 grams (1 lb 3.8 oz)
• Rarity: Uncommon
• Origin: Near Prineville, Oregon, USA
• Condition: Natural rough, unpolished
Eagle Rock Plume Agate is a classic old stock material from Central Oregon near Prineville, representing important Oregon rockhounding history. Discovered in the 1940s by Shirley Quant, mining was delayed when someone else claimed it during his military service. The material features a variety of colors, well-defined moss agate, and red rhyolite that polishes nicely.
WHAT MAKES IT SPECIAL
This is the black marcasite variation rather than the typical multicolored Eagle Rock - a scarcer variant that produces darker, more dramatic cabochons when the plume reveals itself.
PERFECT FOR
• Cabochon cutting
• Oregon old stock collectors
• Plume agate hunters
PHOTO NOTE: Photographed wet. Natural rough may show surface texture. Colors vary on monitors.
Rough stones may contain natural fractures, pits, or inclusions typical of unpolished material.
This listing is for the exact piece shown in photos.
