How to Properly Measure a Shark Tooth

 When it comes to buying a shark tooth, size is often one of the first things people consider. But here's the thing; not everyone knows how to measure a shark tooth correctly. You might already be familiar with the process, but many others are not. In this blog, I’ll walk you through exactly how to measure a shark tooth the proper way, so you can shop (or sell!) with confidence. 

Why Accurate Measurements Matter

Size isn’t just about bragging rights. For collectors, the measurements can significantly impact value, rarity, and desirability. Misleading measurements can also create disappointment or mistrust, especially in online sales. Knowing what dimensions to look for (and how they’re measured) helps create consistency and clarity for both buyers and sellers. In the U.S, we will use inches as the primary unit of measurement. 

The Correct Way to Measure a Shark Tooth

When measuring the shark tooth, you can measure both lengths and determine which is the largest. That is what the final measurement will be, the longer slant length.

1. Slant Lengths (the most common measurement )

   • Measure from the tip of the tooth diagonally to the edge of the root, following the longest side.

   • This gives the best representation of the tooth’s display size and is the most widely used method among fossil dealers and collectors.

2. Width

   • Measure straight across the widest part of the root.

   • This is helpful when comparing similarly sized teeth or fitting them into displays.

Knowing how to properly measure a shark tooth helps maintain trust in the fossil community, especially when buying or selling online. Whether you're a seasoned collector or just getting started, understanding these basics goes a long way in making informed decisions and appreciating these ancient treasures for what they are. Using calipers is the most accurate. The thickness of the lines on a ruler, can be the difference between a 2.98" Great White or a true 3" Great White "a very desirable and rare size for a Great White."