Rocks and minerals mini research

By : Angela Wong

Question : what are some of the most precious minerals

Answer : the precious minerals are

Diamond, corundum (ruby and sapphire), beryl (emerald and aquamarine), topaz, and opal are generally classed as precious stones. All other gemstones are usually classed as semiprecious.

URL :

http://www.minerals.net/gemstone/gemstone/sapphire/sapphire.htm

http://discoverer.prod.sirs.com/discoweb/disco/do/article?urn=urn%3Asirs%3AUS%3BARTICLE%3BART%3B0000028093

Aquamarine in the right

Emarald on the bottom

Thank you for watching.