Description: A prismatic obsidian core from which long thin blades have been struck.
Size: 48 mm/1.9 ins. in length
Culture: Mexican
Date: c. 1st Millennium B.C. to 1st Millennium A.D.
Notes: The blades struck from such cores would have been inserted into wooden tools to make very effective implements or weapons, such as sickles, knives and swords.