Umber Opal (310) 3mm
Contains sulfur and may react to copper bearing glasses. Slight reactive potential to lead bearing glass. This style is not suitable for kilncasting because it can become incompatible when held at high temperatures for an extended period. It may also become incompatible in instances where processes exceed the parameters of the test for compatibility. Testing recommended when heatwork exceeds these parameters.
Sheet sizes are:
1/2 Sheet - 20" x 17 1/2"
1/4 Sheet - 10" x 17 1/2"
20" x 20"
10" x 10"
5” x 10”
Sample: 2 1/2” x 3”5” x 10”s are perfect for testing colors before you commit to buying a larger piece, or if you just need a small piece. **Please note, 5" x 10" pieces may vary in size.**
Our Samples are larger than Bullseye’s in order to give you a better sense of the color. Keep several on hand to create color palettes and test transparent layers. Strikers will come pre-fired so you can see the fully developed color. Samples available in 3mm Opals, Collage, or 3mm and 2mm Transparents.
For a full sample set of all opal and transparent colors in 3mm, click here.
Please click to add one Glass Handling Fee to your glass order for 1/2 and 20" x 20" sheets.
We will bill you through PayPal if your handling fee is not included.
Reaction Chart: Download PDF