🔬 Clarity Enhancement in Paraiba Tourmalines: A Microscopic View Gübelin Gem Lab reveals how fissure filling alters Paraiba Tourmalines: 1️⃣ Untreated: Sharp, reflective fissures 2️⃣ Filled: Softer, blurred outlines 3️⃣ Heavily Filled: Nearly invisible fissures, color flashes 4️⃣ Surface Clues: Micro-droplet chains signal filler presence 🔍 These insights help ensure ethical sourcing and informed buying. How do you balance treatment transparency with market demand? Share your thoughts! 📷 Credit: Keith Chow, Gübelin Gem Lab, Hong Kong