Dark Purple Biwa Pearl String - 4mmPrice is per 15 inch string of these beautiful 4mm pearls. Note: most are 4mm, but some in the string will be 3. 5mm. The least expensive cultured pearls today rival the most expensive natural pearls ever found. Natural freshwater pearls occur in mussels for the same reason saltwater pearls occur in oysters. Foreign material inside a mussel can't be expelled. To reduce irritation, the mollusk coats the intruder with the same secretion it uses for

Top quality fine blue moonstone shows an incredible three-dimensional depth of colour

real Chinese freshwater pearls each measure 11mm x 8mm x 6mm

Untreated turquoise will eventually turn green

Today jade continues to be a symbol of love

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and carnelian beads

In early Chinese myths

7mm - ready for stringing

it seems soft to the touch

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but most semi-precious beads will fall apart if they had a big hole