qtranslate allow to translate things with code like
[:en] Size & Carats [:fr] Taille & Carats
it works well on the tab label
but not on the title inside nor in the html text
If found this, but I'm not a dev.
I think if the tinyMCE editor was enable it will solve the translation problem.
what do you think ? isn't it a good thing to add to your plugin ?