This is the 10216th most frequent Polish word.
bursztynowymi
"Bursztynowymi" means "amber" (instrumental plural form) in English.
In this sentence, 'bursztynowymi' is an instrumental plural adjective describing 'lampami' (lamps) and highlights their amber color or material.
Pokój oświetlony został bursztynowymi lampami.
The room was illuminated by amber lamps.
Here, 'bursztynowymi' is used as an adjective describing 'chmurami' (clouds) in instrumental plural, suggesting the amber-like color of the clouds.
Zachód słońca miał odcień bursztynowymi chmurami.
The sunset had a shade with amber clouds.
The word 'bursztynowymi' is an instrumental plural adjective describing 'koralikami' (beads), indicating that the beads are made of or resemble amber.