Our arrowheads fall into 2 classifications:

Authentic Contemporary - These are reproductions handmade from agate and Jasper agate. Agate is a microcrystalline variety of quartz, characterized by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks, but can be common in certain metamorphic rocks.
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Authentic Artifact/Archaic - These are genuine arrowheads we get from collectors across the USA, and can range in classification from Artifacts (less than 1000 years old, or older than 200 years but likely not older than 1000 years), and Archaic (between 1000 and 8000 years old). The older the arrowhead, the more valuable it is. Stones identified as Artifact BCE are stand for “before the common (or current) era”. These abbreviations have a shorter history than BC and AD, although they still date from at least the early 1700s.

The older the arrowhead, the higher it's value.