Item #: 1855104 This an authentic GUCCI 18K Yellow Gold Blue Topaz Running G Pendant Necklace. The necklace with a blue topaz accent stone at closer and is crafted of 18 karat yellow gold, which features Gucci's iconic GG monogram pendant. PLEASE NOTE: this piece contains surface treated stones. This treatment is not permanent and can wear over time. This does not affect authenticity. Follow this item for alerts. Gucci is a registered trademark of Gucci. FASHIONPHILE is not affiliated with Gucci.