Double helix. Gotta love it. NTSCT - Never the same colour twice.
Krono - reduces - appears to be a transparent cobalt. Here it is on black, reduced, and encased.
This leaf is not encased.
Triton - looks black, when held to the light, you can see it is cobalt blue. Reduced and encased. Pearlescent effect when encased.
These Mermaid tails are also Triton, just reduced, no encasing. Pretty darn impressive.
And Clio - the carnival of glass - reduced and struck.