A 1.39-carat emerald-cut watermelon tourmaline and a 0.33-carat lab diamond, set opposite each other on a 10k yellow gold band — one stone formed over millions of years in two colors, one grown in weeks in one. The toi et moi format exists to hold a conversation between stones; these two have the most to say to each other of any pair in the drop. The Object Name: Elphaba Silhouette: Toi et moi, two-stone opposing claw prong setting Edition: One of one Size: 4.5 Collection: Diptych The Stone Type (center): Natural watermelon tourmaline Cut: Emerald cut Carat weight: 1.39 ct Color: Watermelon — green base with red saturation toward the surface; deep, saturated throughout Accent stone: 0.33 ct lab-grown diamond, six claw prongs Certification: Both stones uncertified — selected by eye for how they read together Grade significance: Watermelon tourmaline with this depth of two-tone saturation is rare at any size. The color gradient here runs clean through the stone rather than pooling at the edges. The Metal Metal: Solid yellow gold Gold content: 10k (41.7% pure gold, 417 stamp) Gold weight: 2.20 g Finish: High polish 10-karat gold is the strongest everyday gold alloy — more scratch- and dent-resistant than 14k or 18k, with a warmer, quieter tone. We chose it deliberately, for jewelry that’s meant to be worn, not stored. Measurements Ring size: 4.5 This ring is a one-of-one piece in a single size. It cannot be resized without compromising the design. If you are between sizes or would like to discuss a custom version in your size, please book an appointment. Provenance & Certification Stone sourcing: Tourmaline — natural, hand-selected. Diamond — lab-grown. Certification: This stone is uncertified. It was personally evaluated by Catherine Peck and selected for its quality and character. Certification is available on request. Metal: Recycled 10k yellow gold Read more on our approach to stones and certification → On Stones Production & Delivery This ring has already been made. It exists in a single size, as a single object. Once it finds its wearer, it cannot be remade. Delivery: Fully insured shipping via UPS or USPS, calculated at checkout by package weight. Signature required on delivery. Complimentary on US orders over $500 and international orders over $1,000. Care Solid gold is durable enough for daily wear, including water exposure. For longevity, we recommend removing the ring during high-impact activity (weight training, rock climbing, manual labor) and avoiding direct contact with harsh chemicals including chlorine, bleach, and acidic cleaners. A soft-bristled brush and mild soap in warm water is sufficient for home cleaning. Note: Elphaba’s claw prongs can catch on fabric; we recommend extra care around knitwear. Complimentary cleaning, polishing, and inspection within the first year of purchase — see our Warranty & Repairs page for full coverage details.