These beautiful crystals have a delicate iridescent Aurora Borealis (AB) coating which adds a gorgeous rainbow sheen. This effect makes it difficult to capture the true colour blends of blues, yellows and pinks ~Flat back style crystals with butterfly push back closure ~Crystal size 6 mm ~Beautiful aquamarine ab crystals have light blue tones reminiscent of cool clear waters, this creates a myriad of blue shades as the crystals catch the light ~Sterling Silver fixings ensures all pieces are hypoallergenic ~Each set comes gift boxed This jewellery is made in the UK using Sterling Silver (Ag925) fixings and Genuine Finest Quality European Crystal Elements from certified suppliers.