Amber
The fossilized resin of pine trees that lived about 45 million years ago is called Amber. Compared to the hardened tears or rays of sunset by the ancient Greeks, its warm yellow-red-orange color, as well as its easy workability, has made amber a popular jewelry material over the centuries.

Amber derives character from inclusions like air bubbles or fossilized insects or plants unlike diamond and most other gems, where these types of inclusions lower their value. Amber is a comparatively soft material that splinters under a knife and is somewhat soluble in alcohol, and burns with resin-like fumes. However, regardless of its value, it's not a particularly good candidate for insurance against damage.