Colour deVerre

Reusable molds for glass casting

Kidney Box

Kidney Box

Select the green  LEARN  tab for specific product instructions. General usage guidelines can be found here.


This product is really two molds: a mold that makes the base and a mold that makes the lid. Fill each mold with frit - any mesh, billets, casting rocks, nuggets, pebbles, sheet glass - broken or cut-to-fit, “nipped” rods, or a combination of these. In a second firing, tack fuse other Colour de Verre castings to the lid and base. Great additions are blossom, pine cone, leaf, dragonfly, butterfly, and scarab designs. The larger mold is approximately 7.25” x 6” x 2.25” and holds 385 grams. The smaller mold holds 180 grams.