2023 Test Batch ATX-889, 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-889 encased in Zephyr, with reduced ATX-889 scrollwork.