Blue Crystal Treble Clef CufflinksSilver Plated and Blue Crystal Encrusted Metal Cufflinks for French Cuff shirts. These elegant silver chrome plated treble clef cufflinks are encrusted with sixteen multi blue crystals, and a perfect accessory and gift idea for any musician, for both men and women. They can be worn with French Cuff shirts of any colour, making them an excellent choice for any occasion, both formal and casual, a great conversation piece as well.