Are these pearls or shells? I know it was bought in Hawaii. Also do you know the makers mark and do I need to have them insured? Do they hold any valu

[ltp1180]

Hi I just wanted to know if anyone know if these are pearls or shells? They were purchased in Hawaii over 30 yrs. ago. And does anyone know the makers mark and do they hold any value that I would need to insure them? Thank you for your expertise. I am grateful.

 

[Pearl Dreams]

No need to insure! They are "rice krispie" pearls, freshwater pearls cultured in Cristaria plicata, the cockscomb mussel, in China.
I do not recognize the "L" mark but it is 14k gold.

 

[A Breaker]

I don't actually know the mark...but it is a company that sells clasps... not a jewelry designer nor pearl designer.