eBay
Here is a nice piece of some windowed Mexican fire agate rough. Shows some nice fire.potential.  Photoed in sun or shade. Colors hard to capture. Approx. to 1 1/2 in. x to 7/8 in x  1/4 to 3/8+ in.. Weighs 14 grms. All items always combined to ship, and are refunded or replaced if returned.