18K / 750 Yellow Gold Necklace with Akoya Pearl, Freshwater Pearls, and Colored Tourmalines Gold hallmark: 750 Length: 45 cm Weight: 10.97 g • 1 Akoya pearl, 9.5 mm Ø Pearl type: Saltwater Akoya pearl (Pinctada martensi oyster) Shape: Round Origin: Japan Color: White Luster: Super high luster Nacre: Thick Surface: Smooth and clean (see photos) • 16 oval pearls, 4 × 3.5 mm • 74 rectangular-cut colored tourmalines, ± 4 × 5 mm These types of gemstone are commonly treated to enhance color. This fact has not been examined for these specific stones. Shipping Insured shipping via UPS, DHL, FedEx, or Correos Express. Estimated transit time: • Spain: 24 h • Europe: approx. 48–72 h • Worldwide / outside EU: 72 h (delivery times may vary by destination)