As sea glass becomes harder to find, some retailers are creating their own artificial sea glass using rock tumblers and chemicals. The difference between the real and artificial beach glass is ...

Real sea glass is often rougher and more uneven than the knock-offs, which tend to be more uniformly smooth. “If it looks too good to be true, it probably is,” she said. Authentic glass also has a ...

Now, as sea glass becomes rarer, artificial versions, sometimes made via acid etching, are supplanting the real thing. But acid etching can leave a toxic residue, making this manufactured gem ...

Every piece of sea glass has a story − but sea glass could be on the decline. Olga Pankova/Moment ...