View Single Post
Ruby7's Avatar
Ruby7  Ruby7 is offline
Citizen
 
Join Date: 23 Mar 2003
Location: Ontario, Canada
Posts: 1,745
Ruby7 
Smile Re: Stones


Quote:
Originally posted by Rusty Neon

Where does "gemstone" fit into all this? When is a stone a "gemstone"? Can every stone be made into a "gem"?
Hi Rusty, I would highly recommend to you the book "Crystal Power, Crystal Healing" by Michael Gienger (available at Sunnyside Bookshop in Ottawa) This man knows stones. He has a scientific background and begins his book with a solid grounding in the origins of minerals, chemistry of minerals before getting into healing with crystals. Michael Gienger's book has good pictures too. Another good book to start with is "Gemstones of the World" by Walter Schumann (available at Chapters, but cheaper on Amazon.ca). I bought this book for the pictures, but it is also a good starter gemmology book.

For a stone to be considered a "gemstone", meaning a stone that can be used in jewellery, it has to have three qualities:1. Beauty (this is subjective of course, but if a stone is a transparent coloured gem, the depth of colour and degree of transparency will be the prime factors. But in the case of a diamond beauty is determined by brilliancy, fire, optical purity, and in general the absence of any body colour)
2. Rarity---must be present in some degree --can be affected by factors such as supply and demand, and by fashion and the scarcity of the source material---some stones are made to appear more scarce than they actually are e.g. diamonds controlled by DeBeers.
3. Durability----a more practical quality than beauty and rarity. The gemstone must be able to survive day to day wear, the property of hardness is an important quality in a gemstone. E.g. fluorite is a beautiful stone but is very soft, and in plenty supply, very cheap, not used in standard jewellery, therefore not considered to be a "gemstone" although it can make a nice pendant (since a pendant does not receive the wear and tear that a ring does)

Hope this helps you, Ruby7
Top   #5