Rare GIA 6.57 Ct Unheated Natural Green Paraiba Tourmaline & Diamond Ring 18K

GIA Certified 6.57ct Unheated Natural Green Paraiba Tourmaline & Diamond Ring in 18K Gold An extraordinary, investment-grade gemstone piece featuring a massive 6.57-carat natural Paraiba tourmaline. Accompanied by a prestigious GIA certification, this rare gem exhibits a deep, vivid natural green hue with the coveted "lit-from-within" radiance characteristic of true copper-bearing Paraiba tourmalines. Crucially, this gemstone is completely unheated and untreated, preserving its pure, untouched color formed by nature.The central tourmaline is set in a four-prong mount, flanked by clean, brilliant white diamonds along the shoulders and gallery that accentuate the gem's saturated green color. The entire piece is custom crafted in solid 18K gold. Center Gemstone: Natural Paraiba Tourmaline (Copper & Manganese Bearing) Carat Weight: 6.57 Carats Color: Deep Natural Vivid Green Treatment: No Heat / Untreated (Confirmed by GIA) Certification: GIA Certified (Report Included) Side Stones: Natural Clean White Diamonds (Baguette & Round Accents) Metal: Solid 18K Gold Ring Size: 7.5 Condition: Excellent condition with crisp prongs and minor, natural internal inclusions typical of large untreated tourmalines. Ready to wear or add to an elite gemstone collection.