Turritella Agate is a brown colored translucent stone made up of fossilized snails and found only in the Green River Formation of Wyoming, USA. Forty-six to 51 million years ago, the shells were deposited in shallow lakes and covered by sea sediment, eventually becoming fossil beds.
That really pretty raspberry gemstone you’ve seen on Mine Finds is called Rhodonite and, even though Jay has designed with it in the past, he’s breathed new life into it in a number of beautiful pieces.
It can be found world-wide as small deposits, but Jay found our Rhodonite in northwestern China on the Mongolian border. China is a geologically diverse country which is why Jay always finds so many neat gemstones from there.
Among all turquoise in the world, one of the most coveted is #8 from Eureka County, Nevada. It comes in light blue, dark blue and bluish green and can be webbed with black, brown or red matrix. The black and red matrix are the most desirable.
Have you ever wondered why a particular stone is called an opal, but looks nothing like one? That’s because there are two types – Precious and Common.
The stone that puts out flashes of light and color (opalescence) is called Precious Opal, most of which is mined in Australia. This is the opal that is most familiar to us.