2023 Test Batch ATX-890, is a silvered opal. Silvered Opals are R/T glasses. R= reduce. T = technical, in this case the T is for opacifying in the kiln.
We recommend using moderately thin layers of the color and limiting annealing to 920°f for 1 hour to preserve the misty Opal effect.
The pictured bead has a core of Zephyr with a thin layer of ATX-890 encased in Zephyr, with reduced ATX-890 scrollwork.