An exhibition showcasing aesthetic pearl and oyster shell ornaments along with eye-catching showpieces was held in Gopalganj ...

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The purplish shells of quahogs, treasured in the past by Native Americans, now appear alongside gold, mother-of-pearl and onyx. By Jill Newman For centuries Native Americans treasured quahog shells, ...

Pearls begin as irritants within oysters, which respond by slowly covering the foreign object with layers of nacre. This ...