Jade is a saturated, fully opaque plant green. It can be stretched out for stringer applications or thin blown work. With the reformulations that have been made it can be worked in a much hotter flame, but be careful not to overheat. Stay in a neutral to slightly oxidizing environment. As with the workability improvements, Jade’s C.O.E. is far improved. It can be encased and used for inside-out applications. Be sure to run a thorough annealing schedule with encased Jade. For a neat color effect, try layering a transparent striking color such as Multi over Jade.
Available in Rod, Frit, Fine Frit, and Powder.
Northstar Glassworks Borocolour Colored Rods & Frit
Northstar Borocolour has a COE of 33 and may be combined with Simax, Northstar and any other glass with a similar coefficient of thermal expansion.
Northstar Glassworks Borocolour Colored Rods are an average length of 18" with a diameter of 5-9 mm diameters. Hand pulled tubes vary in length from 8-22 in. with a diameter of 15-38 mm and wall thickness range of 2-6 mm. Northstar Rods and Tubes are sold by the pound with a 1/4 pound minimum purchase per color.
Northstar Borocolour frits are available in five grain sizes. Large frit is coarse 25 mesh - approximately .055 inches or 1.397 mm. Small frit is finer 38 mesh - approximately .024 inches or .6096 mm. Fine frit is 70 mesh and and powder is 100 mesh. These four frits come packaged in 4 oz. containers. Some colors are available in 16 oz. The fifth product size - called fore powder is between fine and powder in grit size and comes in a 16 oz. container.