1 - Plain, 2 - Plain (reduced), 3 - w/ Silver Leaf, 4 - w/ Silver Leaf (reduced & encased), 5 - w/ Silver Glass Frit (reduced), 6 - w/ TerraNova2 Frit, 7 & 8 - w/ Tuxedo, Copper Green, Opal Yellow, Ivory, Peace
CiM Poseidon is a vibrant, semi-opaque sky blue. It is sensitive to heat, and restriking it increases its translucency. You can see in my plain spacers that the first one is a bright, almost opaque colour. The spacer that I reduced has gone somewhat semi-opaque, and the colour is less intense.
Poseidon is bluer than than Kryptonite and Mint Lozenge. It is a little greener and quite a lot brighter than Effetre Sky Blue Opalino.
Here, you can see that Poseidon is very sensitive to silver. In the bead on the left, the silver has gone sort of a weird, lacy blue colour on top of Poseidon and that the glass underneath it has a sort of smokey, yellow fumed effect to it. Reducing and encasing the silver gets rid of the yellowishness, and leaves a shiny, patchy coating of silver under the clear that has little pinpricks of blueness to it - although this blueness is the blue of the Poseidon peeking through, not a reaction with the silver the way it is with some colours.
Reducing silver glass on top of Poseidon fumes it a greenish colour, and reducing silver glass develops colour quite nicely on top of Poseidon, however the effect to me is too much blue in one place. I got very little action from my TerraNova2 frit on top of this colour.
Poseidon is similar to the other blue and green CiM semi-opaques in that it is quite reactive.
Not much reaction is evident when Tuxedo is used on top of Poseidon, however when Poseidon is used on top of Tuxedo, there is a slight bit of separation and you can see a darker thready line in the middle of Poseidon stringer lines.
Poseidon makes Copper Green separate a little, resulting in light lines around the Poseidon stringer work on top of Copper Green and a darker, mottled outline around Copper Green stringer work on top of Poseidon.
Opal Yellow and Peace both separate when used on top of Poseidon, and Poseidon makes Peace and Opal Yellow rise up around it in little halos.
Poseidon and Ivory have a mutual dark line reaction that is more pronounced when Ivory is used on top of Poseidon. When Poseidon is used on top of Ivory, you can see that the brown effect is all-over, making the dots and stringer lines look sort of like tea stains. This was sort of surprising because neither Mint Lozenge nor Kryptonite react this way with Ivory, and even though I realize that Poseidon is an entirely new colour, for some reason I expected it to be similar in this respect.