Hello again, Saso!
Thank you very much for choosing Mearto for your online appraisal. Considering these images, this is:

A gilt metal and most likely imitation pearl necklace from the mid 20th century, around 70s and 80s. This collar is in white color.

PROVENANCE: Unknown.
$70 - 100
*represents a fair-market value for auction purposes; retail or asking price may vary.
Please let us know if you have additional items to appraise, and thank you again for using Mearto.