Ceruleana
A 0.94-carat fancy vivid blue marquise-cut lab diamond on a round shank, in 10k white gold. Fancy vivid is the rarest saturation grade in blue — above fancy intense — and most lab growers can't reliably produce it. The white gold lets the stone do its full work. Ceruleana is the Latin root of the word for the color of deep water.
The Object
- Name: Ceruleana
- Silhouette: Round shank solitaire
- Edition: Made to order in 10k, 14k, or 18k white gold, in ring sizes 2 through 12 (including half sizes)
- Collection: Pinky Ring Drop, Spring 2026
The Stone
- Type: Lab-grown diamond
- Cut: Marquise
- Carat weight: 0.94 ct
- Color: Fancy vivid blue
- Clarity: Eye-clean
- Dimensions: 9.81 × 4.88 × 2.11 mm
- Accent stones: None
- Color significance: Fancy vivid is the highest saturation grade in colored diamonds — above fancy intense — and is especially rare in blue, requiring precise boron saturation during growth. The color depth in this stone is exceptional.
Specs describe the pictured piece. Made-to-order stones will fall within 0.2 ct of the pictured weight and matched as closely as possible to color and character.
The Metal
- Metal: Solid recycled 10k, 14k, or 18k white gold (choose at checkout)
- Gold weight: Approximately 2.05 grams in 14k (varies slightly by karat and size)
- Shank: 1.7 × 1.7 mm
- Finish: High polish, rhodium plated
Choose 10k for the most scratch-resistant, everyday-durable alloy with a warmer, quieter tone (41.7% pure gold). Choose 14k for the classic middle ground (58.5%). Choose 18k for the richest color and highest purity (75%).
Measurements
- Shank: 1.7 × 1.7 mm
- Profile height off finger: 4.80 mm
Provenance & Certification
- Stone sourcing: Sourced through Catherine Peck's trusted lab-grown diamond partners
- Certification: Center stone IGI certified, report number LG586338927, for those who'd like the paper on record.
- Metal: Recycled solid white gold — 10k, 14k, or 18k, per your selection
Read more on our approach to stones and certification → On Stones
Production & Delivery
This piece is made to order in your chosen size and karat. The pictured piece is a size 6 in 10k white gold set with a 0.94 ct fancy vivid blue marquise lab diamond; made-to-order stones will fall within 0.2 ct of the pictured weight and matched as closely as possible to its color and character. Production begins after your order is placed. Please allow 3–6 weeks from purchase to delivery.
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. Complimentary cleaning, polishing, and inspection within the first year of purchase — see our Warranty & Repairs page for full coverage details.
