Omega Aqua Terra 150M Master Co-Axial Chronometer Ladies Steel/Yellow Gold 38.5mm White Mother of Pearl Diamond Dial Steel/Yellow Gold Bracelet 231.20.39.21.55.004 - BRAND NEW

The Omega Aqua Terra 150M is one of the Swiss manufacture's most celebrated lines, blending the brand's deep-sea heritage with a refined, versatile aesthetic that moves seamlessly from boardroom to yacht deck. Introduced as the definitive expression of Omega's aquatic DNA translated into an everyday luxury timepiece, the Aqua Terra family is recognized worldwide for its signature teak-pattern dial motif inspired by the timber decking of sailing vessels, its reassuring water resistance, and its robust yet elegant case proportions. Reference 231.20.39.21.55.004 sits at the apex of the ladies' Aqua Terra range, pairing two-tone materials with gem-setting for a result that is as much a jewel as it is an instrument.

At 38.5mm, the case occupies a modern sweet spot that reads as genuinely contemporary on the wrist without overwhelming a feminine silhouette. The case itself is constructed in stainless steel with yellow gold integrated into the crown guards and lugs, while the polished yellow gold domed bezel frames the dial with a warm, luminous arc that catches light from every angle. The integrated stainless steel and yellow gold bracelet continues the two-tone dialogue down the wrist, tapering elegantly toward a deployant clasp and lending the piece an overall sense of fluid, unified design.

The white mother-of-pearl dial is the undisputed centerpiece of this reference. Each mother-of-pearl surface is unique by nature, meaning no two examples of 231.20.39.21.55.004 are ever identical — a quietly artisanal quality rare in a production timepiece. Diamonds set around the dial add measured sparkle without overwhelming the organic iridescence of the shell, striking a balance that Omega's designers have long mastered. The result is a watch face that shifts character under different lighting, appearing softly luminous in low light and brilliantly alive in sunlight.

Beneath the case the watch is driven by Omega's Master Co-Axial Chronometer movement, a caliber that carries COSC chronometer certification and meets Omega's own stringent Master Chronometer standard verified by the Swiss Federal Institute of Metrology (METAS). The Co-Axial escapement reduces friction and wear compared with a traditional lever escapement, contributing to long-term accuracy and reduced service intervals. Anti-magnetic resistance to levels far exceeding conventional standards is another hallmark of the Master Chronometer platform, making this a watch built for real life rather than a display cabinet.

For a buyer seeking a luxury ladies' watch that delivers genuine mechanical distinction alongside unmistakable aesthetic presence, the Omega Aqua Terra 150M ref. 231.20.39.21.55.004 is a compelling choice. Its two-tone case and bracelet give it versatility across dress codes, while the diamond mother-of-pearl dial ensures it reads as an occasion piece when the moment calls for it. It is equally at home as a daily companion and a special-event watch — a duality that justifies its position in any serious collection.

Bizak & Co. offers this reference brand new, ensuring you receive the watch in pristine, factory-fresh condition. Our team of specialist advisors is available to answer questions about this specific reference, discuss current pricing, and facilitate a smooth purchase experience whether you are buying locally or online. Visit bizakandco.com to explore the Omega Aqua Terra 231.20.39.21.55.004 and the full curated selection of luxury timepieces we offer for sale.