This is a stunning specimen. A 1.86ct Paraiba Tourmaline from Mozambique is a significant find, especially with those dimensions. Its 8.7 mm length gives it a visual presence that often punches above its carat weight, making it an ideal candidate for a standout jewelry piece. Since you have the specific measurements and origin, here is an evaluation of what makes this stone unique and how to best showcase it: Gemstone Analysis Color & Origin: Mozambique Paraibas are celebrated for their “neon” or “electric” glow, caused by copper and manganese. While Brazilian stones are the historical standard, Mozambican gems like yours often offer better clarity and larger sizes while maintaining that iconic turquoise-to-blue saturation. Dimensions & Cut: An 8.7 mm length is quite generous for under 2 carats. The Mixed Cut (usually a brilliant crown and step-cut pavilion) is a smart choice for Tourmaline, as it maximizes brilliance while maintaining the depth of color. Clarity: “Moderate” clarity is very common for Paraibas. Because they are “Type III” gemstones, they are expected to have some inclusions. In this vivid blue hue, these internal characteristics often blend into the “glow” of the stone. Design Recommendations To protect your investment and highlight that electric blue color, consider these setting styles: Style Why it works Yellow Gold Prongs The contrast between high-karat yellow gold and neon blue makes the color “pop” more intensely. Diamond Halo A surround of small, colorless diamonds (F-G color) will act as a frame, emphasizing the Paraiba’s unique saturation. East-West Setting Setting the oval horizontally across the finger provides a modern, avant-garde look that highlights the 8.7 mm spread. Care Note Tourmalines have a hardness of 7 to 7.5 on the Mohs scale. While durable enough for daily wear in a ring, they are sensitive to high heat and sudden pressure. It is best to avoid ultrasonic cleaners; a simple solution of warm, soapy water and a soft brush is the safest way to keep that neon glow bright.
