From SABR Encyclopedia
(Difference between revisions)
|
|
| (18 intermediate revisions not shown) |
| Line 1: |
Line 1: |
| - | Commonly known as <a href="http://www.charmsaustraliajewelry.com/"><strong>pandora charms australia</strong></a> agate staining method, using chromate or dichromate solution, will stone soaked, let it dry and then Heat treatment, because the acidizing effect of chromium, so agate produce green coloring effect. Blue Agate coloring has two kinds, one is by cobalt chloride solution dipping further after acidizing treatment to. The other Is the first agate with potassium ferricyanide or ferrocyanide solution soaking, secondly in second agent ferric salt solution immersion, let It produces change, again with heat treatment, can have the effect of blue.
| |
| | | | |
| - | Black Agate staining <a href="http://www.charmsaustraliajewelry.com/"><strong>pandora australia</strong></a> the first stone drenched in sugar solution, followed by concentrated sulfuric acid and stone at the same time to boil, The carbonization, so the organization will be due to carbon and appear black, if can accomplish completely carbonized, and heat treatment Complete words, color will be stable and does not fade, the artificial coloring and natural coloured agate, can be In order to get the same evaluation.
| |
| - |
| |
| - | Agate origin, crop also vary from region to region, the most valuable and yield the most informative for Brazil, followed by Uruguay, India, mainland China, the United States, South Africa, the David Villa. And so on. Agate was previously a royal nobility of exclusive products, but has spread because of production, processing and technical improvement, practitioners The increase in popularity, agate products in markets around the world, and <a href="http://www.charmsaustraliajewelry.com/"><strong>pandora charms</strong></a> Taiwan agate products the largest exporting country.
| |
Latest revision as of 04:58, 8 January 2013
