<https://www.bluestreakcrystals.com/products/preciosa-bicone-beads-black-diamond-ab-2x?variant=39411179978775#json-ld-for-seo-product>
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"Preciosa crystal beads Bicone in Black Diamond AB 2X have a smooth thread hole and are multi-faceted to reflect the light, making them perfect to create bespoke designs. Preciosa Bicone Beads have a cylindrical shape and taper towards both ends to create a unique bi-conical shape. The multi-faceted surface of these beads, which narrows towards each end, adds texture, depth, and sparkle to different jewellery and custom-made designs.\nBlack Diamond AB 2X is often used to add a touch of elegance and sophistication to jewellery, clothing, and costume design. It is often paired with other gemstones or materials, such as silver or white gold, to create a striking contrast and can also be used to add a touch of drama and mystery to a design or outfit. The AB (Aurora Borealis) effect is an iridescent coating that covers the top of the crystal, making it shimmer like a rainbow. The base colour of the crystal can still be seen underneath but there is a noticeable pink and blue shine to it as it hits the light. The 2X indicates that the coating is on both sides of the crystal.\n\n\n"
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