Grey and Violet are actually structural colours, they are either grey or not, or violet, or not, no splits etc. One GreyGreen to a Green will produce 50% GreyGreen and 50% Green, likewise with VioletGreen and Green pairs.
This is also what happens with birds that are Visually Grey (not the greygreen). A visually grey bird actually carries both the blue and grey genes. Your Turquoise Grey bird, is actually three colours in one package. Grey and TurquoiseBlue (turquoiseblue is different to turquoise, as turquoise is a DF variation, rarer and harder to get and impossible to tell appart from normal Turquoise without breeding).
Blue is Recessive, like TurquoiseBlue and the DF turq variant.
Cinnamon is sex-linked Recessive.
Your best bet regarding easy access to fast knowledge of genetics is to muck around with gencalc genetics calculator. Its fabulous, once you have been breeding for a while you memorise it all fast enough though.
http://www.gencalc.com/gen/eng_genc.php?sp=0PsitIR
A few key notes:
Visually Grey = both visual blue and (sf) grey radio buttons.
Green = nothing checked.
Normal turquoise birds are Visual Turquoise split blue options.
The x1 and x2 stuff is more heavily into genetics and really isnt THAT important to know when getting first into genetics with ringnecks on a usable level. More important for percentages of offspring in mixed mutation pairings etc.
For example, your Turquoise Grey bird, is Visual Grey, Visual Turquoise and split blue and your hen is just the Cinnamon option.
1.0 = male, 0.1 = female.