Chalcedony - a great result!
- Ca. 21x16mm
- Sterling zilver
- Verguld min. 14 krt goud
- 40mm incl. het vaste oogje van 5mm
Chalcedony is a mineral and has a slight to a beautiful blue color, sometimes this stone has a stripe pattern, and sometimes she is solid in color. The stripe patterns of fine structure and lacy, this gem is also called the Blue Lace Agate, or "Blue Lace Agate, named.
Chalcedony is a quartz, is very pure and natural white stone. The beautiful blue color produced is a result of a physical phenomenon, namely, it is produced by the micro-crystalline structure of the stone, the so-called Tyndall effect. Heaps of microscopic crystals scatter in stunning way the incident light. The special thing is that the blue part of the spectrum is scattered more than the red part. Because of that scattering the human brain is actually being fooled, because the result is that we are the white stone towards a blue color.
Chalcedony is mainly found in cavities and fractures in rock. A stripe pattern in the gemstone is obtained when the stone is created from flowing silicic acid. it is formed in stagnant silica, the gemstone is true even in translucent structure.
Chalcedony is a kind of filler in the cavities of rocks.
Blue Chalcedony takes its name from the ancient city of Chalcedon, which was located on the Bosphorus in antiquity in Asia Minor, opposite Byzantium. Blue chalcedony caused by rapid cooling at low temperatures and low pressures, and therefore has no visible crystals.
Family Chalcedony include Agate, Carnelian and Chrysopaas, these gemstones have other inclusions, such as iron or calcium.
But Chalcedony is not alone in a blue coloration, we also have many other colors beads in our collection.
Working with Chalcedony really seems a subject to be separate and thus require the necessary expertise. The town of Idar-Oberstein is famous for its gemstone mine, this town has a long history in the grinding stones.
Hardness: 6.5 - 7
Gloss: glass gloss, matt, satin, wasglans
If constellation is blue Chalcedony gemstone included under Cancer and Sagittarius