Serinity Pearls Round Half Drilled Crystal Iridescent Light Blue (5818) Size | Pack Size:3mm - Pack of 1000 (Wholesale) and it is the drilling

and it is the drilling that separates them

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About Butterfly Pendant Setting for Rivoli Chatons SS29

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Serinity Pearls Round Half Drilled Crystal Iridescent Light Blue (5818) Size | Pack Size:3mm - Pack of 1000 (Wholesale) and it is the drillingSerinity 5818 Round pearls in Crystal Iridescent Light Blue are Austrian made half drilled pearls with a crystal core and a coated pearl surface. Available in 6mm, 8mm and 10mm in wholesale packs of 100, 250, 500 and 1000. The hole is drilled part way into the pearl rather than through it, so it seats onto a peg or post and is fixed with adhesive. That leaves the surface unbroken on the visible side, which is what a pendant end or an earring post