Specimen Sales for Charity Rocks - Prehistoric Specimens Available for Purchase
The rocks, minerals, gemstones, and fossils in this section are available for purchase.
All profit - every penny - is donated to charity.
The specimens are good quality and very reasonably priced. Note: Prices do not include shipping. See below for shipping information.
Magnet: Agate (polished)
- Semi-precious Gemstone
Eocene Epoch - 38
to 54 million years old
Western
Washington, USA
Carnelian Agate (polished)
These semi-precious gemstones are agates (chalcedony - a cryptocrystalline variety of quartz). Agate occurs as a filling within gas cavities and veins in certain lavas or as a replacement mineral within some sedimentary limestones and claystones.
Washington has plenty of Eocene age volcanic rocks that function as host material for agates. Agates have a hardness of between 6.5 and 7 on the Mohs scale and, as a result, weather out when the softer volcanic rocks erode. Agates can form in a variety of colors depending primarily upon the presence of iron-rich solutes.
Agates (polished)
I tumbled polished these agates and have mounted them on high quality super-magnets so that they function well and don't slide off vertical surfaces.
Magnet: Petrified
Wood (polished) - Washington State Gem
Miocene Epoch - 5
to 24 million years old
Western
Washington, USA
In March 1975, Washington designated petrified wood as its official state gem.
Petrified Wood (polished)
Petrified wood is created by permineralization – a fossilization process in which organic matter (wood) is replaced with minerals (silica), while retaining the wood’s original structure. Much of the petrified wood now found in Washington grew during the Miocene Epoch, millions of years ago, when the state was swampy and mild, with vast forests of cypress, oak, elm, and ginkgo trees. Although much petrified wood is buried in lake and river sediments and is thus found in mudstone or sandstone, the trees in ancient Washington grew next to large volcanoes which spewed tons of ash into the air when they erupted. This volcanic ash settled and buried the trees in place; sometimes they were even engulfed by lava flows.
Petrified Wood (polished)
I tumbled polished these specimens and have mounted them on high quality super-magnets so that they function well and don't slide off vertical surfaces.
Magnet: Fossil
- Coprolite (petrified dung)
Miocene-Oligocene Epoch
- 30 to 35 million years old
Western
Washington, USA
Washington's Weirdest Rock
This may be the weirdest rock in the State of Washington. For nearly a hundred years, recreational rock collectors as well as professional scientists from around the world have collected and debated the precise nature of these unusual rocks. Many believe they are prehistoric coprolites (petrified turtle dung). Not to worry. The organic matter has been replaced with siderite and limonite, both iron minerals.
I have mounted these specimen on high quality super-magnets so that they function well and don't slide off vertical surfaces.
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If Gator Girl Rocks is a resource for you (and how could it not be if you're a rockhounder?), I encourage you to support the website. Hopefully, this website will have identified helpful resources for you and your family and saved you an enormous amount of time and treasure that you otherwise would have spent (or countless hours looking at ad-oriented 'how to' websites and message boards that are nearly useless). All donations are pooled with profits from my specimen sales and contributed to charity. Every penny.
Thank you for your support.