enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Moissanite - Wikipedia

   en.wikipedia.org/wiki/Moissanite

   The mineral moissanite was discovered by Henri Moissan while examining rock samples from a meteor crater located in Canyon Diablo, Arizona, in 1893.At first, he mistakenly identified the crystals as diamonds, but in 1904 he identified the crystals as silicon carbide.

3. Marcasite - Wikipedia

   en.wikipedia.org/wiki/Marcasite

   As a primary mineral marcasite forms nodules, concretions, and crystals in a variety of sedimentary rock, such as in the chalk layers found on both sides of the English Channel at Dover, Kent, England, and at Cap Blanc-Nez, Pas de Calais, France, where it forms as sharp individual crystals and crystal groups, and nodules (similar to those shown ...

4. Silicon carbide - Wikipedia

   en.wikipedia.org/wiki/Silicon_carbide

   Synthetic SiC crystals ~3 mm in diameter Two six-inch (≈ 15 cm) wafers made of silicon carbide. Because natural moissanite is extremely scarce, most silicon carbide is synthetic. Silicon carbide is used as an abrasive, as well as a semiconductor and diamond simulant of gem quality.

5. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Rock crystal (var.) Shocked quartz (var.) Smoky quartz ... Some minerals made into gemstones may display a chatoyancy or cat's eye effect, ... Lab moissanite;

6. 29 House Republicans want Trump to scrap the IRS's free ... - AOL

   www.aol.com/29-house-republicans-want-trump...

   The IRS has gradually rolled out a program to allow Americans to directly file taxes with the IRS. It's designed to make filing taxes simpler and easier. A group of Republicans want Trump to end ...

7. Hundreds of illegal miners holed up in disused shaft in South ...

   www.aol.com/hundreds-illegal-miners-holed...

   Ilegal miners can travel up to 4 kilometers underground and spend months below ground in old mines, according to a report by South Africa’s Minerals Commission. But without supplies, conditions ...