These teacups called Stain by Bethan Laura Wood are really extraordinary! The idea behind this design is that a product should improve through use. The interior surface of the cup is treated in a special way, so the more the cups are used, the more the pattern is revealed. Over time the cups will build up an individual pattern dependent on the users personal way of drinking tea.
Another original design by Bethan Laura Wood is “Time for tea”. A set of three cups and saucers made from mixed porcelain slip. The shadow of the teacups determines the shape of the saucers. You could use the saucers for your biscuits, cakes or chocolates while drinking your tea. For more information please contact Bethan Laura.
Wall Art .. Wall Decor .. Canvas Art 
Oh i love this so much - beautiful and functional!!!!
Posted by: julie | 04/30/2007 at 05:38 AM
Oh how conceptual! I like, I just wonder what the material is that washes away, b/c wouldn't you be ingesting that?
Posted by: Michelle | 04/30/2007 at 10:23 AM
Wow that's unique. I wonder how is it that it’s changes over time and use. People are getting smarter and smarter…Ha?
Posted by: julie at BV | 04/30/2007 at 12:49 PM
The 'stain' idea is wonderul - now I am torn between these and these:
http://thorstenvanelten.com/products/?category_id=9&product_id=17
Posted by: rebecca | 04/30/2007 at 05:05 PM
these are so unique!
Posted by: jan | 04/30/2007 at 11:34 PM
Hi Rebecca, thanks for reminding me of Thorsten van Elten, his work is wonderful too!
Posted by: irene Hoofs | 05/01/2007 at 04:01 AM
What an interesting idea. I've noticed a similar thing on a couple of other blogs lately - the concrete that reveals a pretty pattern when it gets wet.
Posted by: Heather Moore | 05/02/2007 at 03:14 AM
Love the cups on top, very beautiful!
Posted by: cruststation | 05/02/2007 at 05:06 AM