Editing Periodic Table of Dragons (section)

==Chromium 24==
Chromium dragons are an incredible species of Metallics, their scales shining with a luster and reflectivity far beyond any of their cousin species. They are unusually friendly to mortal races, and commonly come to towns to trade goods and services. 

One of the most notable quirks of the subspecies is their use of gizzard stones, as many birds do, in order to aid digestion. Over the course of decades, these rocks roll around in their hot, acidic insides, and absorb the essence of the dragon. When they are eventually regurgitated or excreted, the stones that emerge are beautiful jewels, usually rubies and emeralds. It is said that over the millennia, almost all such gems found by miners in fact have their origins in a Chromium's gut. 

The Chromiums attach no value to these stones, but have learned over the years that other species desire them, and use them as trade goods. 

In the wild, the lightweight Chromiums usually fly away from their assailants, but their large, flexible wings can also reflect and concentrate light by forming a parabolic shape, blinding and burning their enemies. For this reason, Chromiums tend to live in well-lit areas, often atop mountain peaks.