Is the onyx band "black?

Onyx is a metallic black color.

Hi - I am looking for Stardream Metallic Coral belly bands in 14" width. Do you carry / make them?

We do not offer them in a 14 inch length.

hello - i am looking to see what the color difference is for the metallic belly bands. the picture is hard to tell. i am looking at 'Cystal "Opal" and "Quartz" thank you vanessa

Crystal is a white metallic, Opal is an ivory metallic, and quartz is an off-white metallic.  Crystal is the brightest and then Quartz is more of an off white, and Opal is slightly more ivory.  You can see the color swatches a bit better here in the card stock listings :   https://www.cutcardstock.com/collections/stardream-metallic-card-stock