Jewelry Tips: Pearls: Pearls have a relatively low impact on the environment. Cultured (or farmed) pearls have even been used to clean water and reduce heavy-metal pollution.

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Jewelry Tips: Perhaps the ultimate in durable jewelry, tungsten carbide is denser than silver, titanium or steel, harder even than titanium. Tungsten carbide jewelry is also effectively wear proof. Like sapphires or rubies, it is likely only diamonds can scratch them, so a tungsten carbide ring will never lose its polish.

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