Natural, Tinted, or Synthetic Gemstones? This guide may help you to determine the gemstones that you come across:  Sometimes you can see where a tint has not absorbed fully into the gemstone. There are many gemstone dealers using words like 'Jade', 'Amazonite', etc. to refer to colour.  The banding in gemstones are typical in some agates. Carnelian is known for its deep orange/red colour, but can also be opaque grey/brown. Sometimes they are 'colour washed'. Price is often a good indicator of a gemstone's authenticity. if it seems to good to be true, it probably is. From a design perspective: Colour is GOOD Colour is DESIGN Colour is a MOOD Colour in your MIND PLEASE SIGN OUR GUEST BOOK CONTACT CRAFT KITS & SESSIONS   IS HARMONY LTD.            Email  ASK@isharmony.com          Telephone: 020 3255 0133 __________________________________________________________________________________________________ ILLUSTRATION ^ ARCHITECTURAL DESIGN MAKING MURALS LIMITED             Email ASK1@makingmurals,com             Telephone: 020 3255 0133 15 W5 4TJ, England. UK