Anybody know any websites where to by cheap 1-2ct (colourless) diamond?

Why don't you buy a cubit zirconia, but even then a l to 2 carat will cost a lot of money. Just Google what you want and you will see many different websites for the product you want.

The Chicago Diamond and Jewelry Exchange - Diamonds at Cost (http://www.chicagodiamondexchange.com/search.shtml)
http://www.overnightdiamonds.com/Search_FourCs.aspx

Try these two places, you can search by the terms you want.

Diamonds at cost, sure, one can do that. But what you get is what you pay for.
If you want a cheap quality ring, then cubit zirconia fills the bill.

By the way if anyone wants quality diamonds, Sudbury,Ontario has many outlets but only in town.. Look for the Polar Bear symbol engraved very tiny on each diamond. Now to do that, that's quality.

When I think of a nice Diamond. I think of a nice natural diamond in octahedral crystal
Form.(Like a pyramid and its reflection, but has more rounded corners. They are nice.
If you have Long/Short Ultra Violet light, you can see what color it flouresess in.
Could be blue, green, yellow, Others,I have seen real, and cz in orange?

Diamonds come in a few colours,all depends in which ore/strata they are found. Such as, diamonds found in iron ore are pink. You are right though, a good diamond will reflect many colours depending on the cut and then it all depends on the technology of the grader and the cutter.

I guessing impurities, I saw a Gold ring retreived off a Spanish Galleon, Had diamonds all round. About half flouressessed in green and other half was blue/white.
If they new about flouressence, they could have alternated colors, instead of random,
Galleon was returning from South America, Hurricane.