Sources, please

I need to find two sources and solicit your assistance.
First I need a cater to make 50 sterling silver candle cups for use on sterling or copper Menorahs. I will provide the prototype to the caster for mold making. The prototype weighs 5g.
Second, I’m kinda in love with boulder opal chips. Looking for a source to sell me bulk lots 1lb to 1kg, pieces shoud the minimum .5" or 13mm on shortest size.
Thanks

Hi James,
RaceCar Jewelry Co inc (my company) does modeling, Cad, Wax printing, Mold making, Casting , Sone setting and finishing. We would be happy to give you an estimate for production of your items. To set up an account for estimates , I need a picture of the item next to a ruler, the weight in grams, Your shipping address and Tel/cell. My Direct email is sales@racecarjewelry.com