In the beginning of the 80's Horovice Jolana factory started production of the infamous Diamant guitar. Diamant was a Les Paul copy, with a couple of "minor" differencies, of course. Czechoslovakian Les Paul had a bolt on neck, same terrible Jolana tuners, "Spectrum" pickups, a rotary pickup selector switch (later replaced with a true to original 3-pos. switch) and a headstock inlay reminiscent of Gibson custom shop logo. The inlay probably represented a "diamond".

Dispite all the minor flaws the classic construction gave Diamant a seriously massive sound and it remains one of the favourite 80's Jolana models.

Onyx was a cheaper version of Diamant - sort of Les Paul Special. Neck and body had no binding, the pickups looked less fancy, the pickguard was bigger than on Diamant. While Diamants were mostly black (think Les Paul Custom) or natural/sunburst (on export model), Onyxes were usually painted in all sorts of "cheesier" colors - blue, red or green.