Trio of vintage onyx stemmed glasses or tealight holders from the 70s-80s

Nice set of 3 balloon glasses with feet or tealight holders in green onyx stone, vintage 70s-80s. Handcrafted, fine stone, onyx shaded from pale green to apple green, layers in shades of burgundy, brown, orange, red...etc. 12.3cm high, 6cm diameter at the rim, 7.5cm max diameter. Good used condition, all 3 have small marks of strong/scratches more or less visible but relatively discreet. Micro chips on the edges of the glasses, discreet and possibly original, the 3 glasses have areas that appear to have been glued back together, these are obviously original "repairs", made during manufacture because they are very clean. Approximately 600gr each.