These tumbled petrified algae fossil stones came from stromatolites (mounds made by repeated layers of microbes and sediment) dating back to the Precambrian era. After being buried underneath sediment for very long periods of time, the algae permineralized into deep, red colored jasper. The black “cracks” are likely to be hematite and the white or clear “cracks” are likely to be quartz that filled in where the sediment was deposited.

This 4 ounce pack of petrified algae will contain a quantity of at least 15 stones and each piece will measure 1/2 to 1 inch in length.

• Quantity of 4 ounces will include at least 15 individual pieces
• Each specimen measures approximately 1/2 to 1 inch in length
• Stones feature a deep red color with black and white minerals lacing throughout, polished smooth