Lapidary Agate Jasper Mix Cutting Rough Flatrate Slicing Stones Rock Box Mexican Velvet Obsidian or it can be quartz

or it can be quartz (and sometimes even hollow with crystals) filled

which is where the red and black coloration is derived from

This geological anomaly of a stone is certainly one you should add to your collection

but is often a high contrast well defined moss agate

Lapidary Agate Jasper Mix Cutting Rough Flatrate Slicing Stones Rock Box Mexican Velvet Obsidian or it can be quartzHere is a gorgeous box of Lapidary Cutting rough materials, raw and unpolished. These beauties have some great pattern, with each one offering some nice workable material. For someone that wants a variety box to work with, this is an excellent deal and certainly one you won't want to pass up. Photos have been taken with the stones wet to simulate a polish. Among those included are: Agua Nueva Agate, Coprolite, Chicken Track Jasper, Eagle Rock Plume