In Roman times natural purple dye was incredibly expensive, costing even more than gold, weight for weight, making it a favorite of the Emperor, hence the name Imperial purple. It has continued as a symbol of majesty ever since. Our teardrop collection would sit happily in any royal jewelry vault. Flawless lab-created Imperial purple Diamondeau - flawless simulated diamond are surrounded by sparkling halos of our D-colored Diamondeau - flawless simulated diamond gems, set in solid sterling silver.