Thunder Egg (agate)
Mineralogical designation for a spherical- or geode-like structure, sometimes with a piece of parent rock (matrix) forming the outer zone of the thunder egg. This…
Tag: agate
Creation Stone Agate™
Commercial name for … how surprising … agate. And you won’t be surprised that this name, too, was introduced by Robert Simmons (Heaven & Earth).…
Botswana agate
Trade name for an agate variety from Botswana, with fine, parallel lines, often pink overflowing into gray to white.
Banded agate
Designation for reddish-brown agate with black and/or white bands, used particularly for the recently marketed polished stones from Madagascar. These large hand stones or “jumbo”…
Agate
Name for a distinctly striped or banded chalcedony. Originally found in the river Dirillo (formerly Achates) in Sicily, Italy, from which the name is derived.…
Educational live session on agate
Recording of an educational live session for mineral and gemstone enthusiasts from my community. This session is about agate, a banded variety of chalcedony that…
Typical geodes
In this article, we explore the fascinating world of geodes, hollow spaces in rocks filled with beautiful minerals such as chalcedony, agate, and quar…
Live session #3 Quartz
Recorded live session in which I discuss and show examples of 10 different varieties of the mineral quartz! Featured are: rock crystal, smoky quartz, citrine,…
Live session #21 Agate
Recorded live session in which I discuss and show examples of the colorful mineral agate. Agate is a banded variety of chalcedony, which in turn…
