That's the problem with Boro.
The glass is clear, then it turns yellow when you
heat it up and comes out of the kiln blue
.
My advice to you would be to order one of the sampler
kits from Glass Alchemy or Northstar.
Here's a few available
http://www.dichroicimagery.com/index...24_423_102_105
http://www.dichroicimagery.com/index...24_423_106_109
Check (call) with various vendors to see if they have any sales
going on (the sale prices do not show up on their websites
frequently). I know that Vaporglass is having a sale right now.
Pretty much ALL the vendors are excellent and will match sale prices if you
ask them.
Try out the rods, and then decide which colors you like the best and
order in 1/4 to 1/2 pound of them.
The colors you should have in qty depend on what you are trying to
do. Obviously, you should stock heavy on the clear glass in various
sizes. Again, it all depends on what you want to make.
There are a few thread on here about what colors are people's favorites.
Do some reading before you make your final selections.
And, beware of "cheap" boro. There's usually a reason it's cheap.