I think it is very likely that your classmate missed an L.
Gilasol has several meanings.
1 fire opal
Jewelry vocabulary (F-M) ... Gimard ring matches the ring Gilasol opal, corundum opal Gilasol fire opal, fire opal. ...
2 green opal
Jewelry vocabulary (F-M) ... Gimard ring matches the ring Gilasol opal, corundum opal Gilasol fire opal, fire opal. ...
3 Sunflower
Spanish Beginners' Vocabulary 2000 (3) Dietary Vegetables and Fruits ... Olives, Olives, Sunflowers, Gilasol, Sesame, Sesamo ...
4 blue opal
The letter G269 in the dictionary of science and technology G269...Girardagent Girard reagent girasol blue opal Girbotalprocess ethanolamine method. ...
As far as my feeling is concerned, the third meaning probably means sunflower-sunflower is a beautiful word ~
Isn't it?