Loisir Sterling Silver Pendant with Platinum Plating , Precious Stones (Quartz Crystals) and Ion Plated Black. The available letters are Γ, Δ, Θ, Μ, Π and Φ. This jewel belongs to Loisir Flashback Collection. Platinum Plating protects the metal from oxidation and corrosion and keeps it bright and shining.