Natural Dark Blue Sapphire Flower Brooch, Platinum Plated Sapphire Brooch Pin. The main gemstones are natural dark blue Sapphires and measure 3x6mm. The size stones on this pendant are high quality cubic zirconia's. This necklace is 925 sterling silver and available in three color options: Gold Color, Rose Gold Color, or Silver (Platinum Plated). This item includes a gift box and certificate of authenticity with purchase. Please allow up to 10-15 days for processing and delivery of this item.