How pearls get their round shape

We know how oysters make pearls, but how can they be perfectly spherical? A new theory says the remarkable structure allows them to naturally rotate in a shell.

Freshwater Potato Pearls Peacock Dark Grey 8-9mm (16 Strand)

How Do Oysters Make Pearls?

Pearl Facts D&D Jewelry in Walnut Creek, CA

Your 2023 pearl jewellery buying guide – RAW Copenhagen

12.5 MM Flat Round Shape Natural White Color Genuine South Sea - UK in 2023

High Quality 3A loose round shape river pearl 3mm -8mm natural freshwater pearl strand string - AliExpress

How To Buy Pearls - Tips for Buying Pearls – PEARL-LANG®

Peach Freshwater Pearl 10.5-11mm Smooth Round AAA Grade Pearl Beads Lot - 159545

Pearl Education - SOMERTON JEWELERS

At Auction: 9 mm multicolor round shape button cultured freshwater pearl stretch bracelet

High Quality, Ivory 10mm Round Edison Freshwater Pearls EP2 – Ayla's Originals