28cts Dyed Blue Tigers Eye Faceted Coin Approx 4 to 4.50mm, 30cm Strand Comes with Certificate of Authenticity Limited Edition - 1 of 105 pieces Top quality products from Jewellery Maker. Jewellery Maker (BFNV90) Origin : Madagascar Treatment : Dying D = Dyeing Enhancement by the introduction of a colouring agent into a porous gemstone.