Check the listing for details. Fossil Dinosaur Gem Set- Dst26- Three pieces- Jurassic/Morrison Formation. Condition: Used. Listed at 46.00 USD. Dst-26- Three piece of Gem/Specimen pieces. Skin on all sides and each with one cut face - not polished. I especially love Piece C. Very lovely! All have the potential for cutting some cabs; Piece B is a bit sketchy - it's color is nice but how deep it goes I'm not sure.Shown both wet & dry. Weight: 199.78 Grams. Dst-26- Three pieces of Gem and/or Small Specimens. All have cut faces, but are not polished. All could get at least one cabachon; piece A & C could get several and still have a pretty specimen piece. Shown both wet & Dry. Weight: 199.78 Grams. Piece A: Nice little piece with a bit of blue rind on the front and red and off-white skin. The Back of the piece is red and off-white skin. Cut Face reveals a band of big bright red & orange cells with black webbing, and compressed cells of orange, gold, light green and crystals. Face 1 to 1 1/4 wide X 1/2 to 3/4 Tall. Front- 1 1/2 inches to Two inches Wide X 1 1/4 to 1 1/2 inches Tall. Back has the same measurements. 1/4 to 3/4 inches Thick. Piece B: Here is a nice orange bone piece with colorful raised agate skin consisting of orange agate and crystal. The cut face reveals various shades of orange and yellow cells, some with crystal centers, and the webbing is mainly crystal. The right side loses all the color except for a few raised orange agate; see the dry photo. Face: 2 to 2 1/4 Wide X mainly One inch Tall. The piece is rounded with the top and left side lowing into each other. 2 1/4 Wide X One inch Tall. Right Side- 2 1/4 Wide X 3/8 inch to One inch Tall. Piece C: This is one of those pieces that is spectacular with every side and angle bursting with color. Two sides have a blue, tan, and light grey with raised red agate. The other two sides tan, umber, red, and a hint of blue. The Face reveals bright red cells, some with orange centers, some with crystal centers, with interesting shapes surrounded with black webbing. The center is triangular shaped with compressed crystal cells with a sprinkling of reds. 5/8 Wide at top; 1 1/2 wide at bottom. 1 1/2 inches tall (left side) and 1 3/4 Tall (right side/angle.) The tall sides are 1 3/4 Tall; the short side is about 1/2 inch tall. Dinosaurs first appeared at the end of the Middle Triassic or in early Late Triassic time, approximately 230 million years ago. The primitive dinosaurs of the Triassic were neither as abundant nor as varied as they would become in Jurassic and Cretaceous times. The fluvial (stream-deposited) sediments of the Morrison Formation dominated the Upper Jurassic landscape of eastern Utah. Originating approximately 150 million years ago as floodplain deposits, the Morrison Formation is exposed throughout the Colorado Plateau, including Colorado, Wyoming, eastern Utah, northern New Mexico, parts of Montana and South Dakota, and the panhandle of Oklahoma