Whitby jet fossil tree resin jurassic, authentic, uk seller

Jet is a type of lignite, a precursor to coal, and is a gemstone. Jet is not a mineral, but rather a mineraloid. It has an organic origin, being derived from wood that has decayed under extreme pressure. The English noun ‘jet’ derives from the French word for the same material, jaiet (modern French jais), ultimately referring to the ancient town of Gagae. Jet is either black or dark brown, but may contain pyrite inclusions, which are of brassy colour and metallic lustre. The adjective ‘jet-black’, meaning as dark a black as possible, derives from this material.

Jet is a product of high-pressure decomposition of wood from millions of years ago, commonly the wood of trees of the family Araucariaceae. Jet is found in two forms, hard and soft. Hard jet is the result of carbon compression and salt water; soft jet is the result of carbon compression and fresh water.

The jet found at Whitby, in England, is of early Jurassic (Toarcian) age, approximately 182 million years old. Whitby Jet is the fossilised wood from species similar to the extant Chile pine or Monkey Puzzle tree (Araucaria araucana).

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity!

Specimen: Jet

Location Found: Whitby (UK)

Age: Jurassic (Toarcian)

Size (picture scale cube=1cm): 20 x 20 x 12mm (0.79 x 0.79 x 0.47 inches)

**The items image shows the ACTUAL specimen you will receive**

**Please note the following:

1) This items picture will change once we update the listing to a new replacement specimen after this specific item has been sold, this action will cause the picture in your purchase history to also change to the new image.

2) The picture will also change if you’ve had the item in your basket for a while and someone else buys it during that period (having items stored in your basket does not remove that listing from the view of other customers, meaning it will still be active on eBay).

3) We would suggest saving, or taking a screenshot of the items image as soon as you have purchased it for your own records of comparison for once the item has been received in the post. We also keep a record of every image we upload.