Our custom engagement rings generally start from $4,000, with the final cost depending entirely on your selection of metal, design complexity, and diamond specifications. We do not enforce a strict minimum budget, as our goal is to maximize the visual impact and quality of your ring within your ideal price point. By working directly with our design founders, you bypass traditional retail markups, ensuring your investment goes entirely into premium materials and master craftsmanship.

The only difference between our natural and lab-grown diamonds is their origin; physically, chemically, and optically, they are completely identical. Lab-grown diamonds offer a highly sustainable, conflict-free option that allows you to secure a larger carat size or higher clarity for your budget, while our natural diamonds are curated for timeless rarity. Both options are meticulously vetted by our team and come with official independent grading reports (such as GIA or IGI certificates).

If you are planning a surprise proposal and don't know the exact ring size, we recommend choosing a standard size, which we can easily adjust later. MOHSTEN offers complimentary resizing on all of our custom engagement rings to ensure a perfect, comfortable fit. During your initial design consultation, we will also provide you with professional sizing tools and tips to help you estimate the closest possible size.

The bespoke design process at MOHSTEN typically takes between 6 to 8 weeks from the moment your final design is approved. This timeline allows our master jewelers to source your exact stone, cast the precious metals, and hand-set your diamonds with absolute precision. If you have an urgent timeline or a looming proposal date, please reach out to our team directly, and we will do our best to accommodate an expedited production schedule.

We provide a fully collaborative design experience, meaning we will modify your high-resolution 3D digital renderings until the concept perfectly aligns with your vision before production ever begins. You are involved in every major decision, from selecting the loose center stone to refining the profile view. This transparent blueprint process ensures that there are absolutely no surprises and that you will love the final, physical piece.

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Every custom MOHSTEN engagement ring comes with a comprehensive lifetime manufacturing warranty that covers any structural defects in materials or workmanship. To ensure your ring remains a flawless modern heirloom, we also offer complimentary lifetime professional cleaning and inspection services at our studio. We highly recommend insuring your ring immediately upon delivery to protect against accidental damage, loss, or theft.

While we are highly sought after for bold, boundary-pushing engagement rings, we also specialise in designing custom wedding bands, statement rings, and fine jewellery. We intentionally engineer our engagement pieces so that a future wedding band can nest seamlessly against it, creating a perfectly flush, sculptural stack. We recommend booking your wedding band design consultation at least 2 to 3 months prior to your wedding day.

At MOHSTEN, we work with all classic and old mined diamond shapes, specializing in high-demand elongated cuts like oval, radiant, marquise, and cushion diamonds. Our signature design philosophy blends timeless, minimalist silhouettes with striking, modern profiles, ranging from delicate hidden halos to bold, sculptural trilogy settings. Whether you want to customise an iconic silhouette from our gallery or build a concept entirely from scratch, we source the perfect stone to match.

Yes, we provide fully insured, complimentary overnight shipping for all orders within New Zealand, as well as secure international shipping to select destinations worldwide. Every MOHSTEN piece is packed in discrete outer courier packaging to preserve the surprise of your proposal, requiring a secure adult signature upon delivery. Your ring will arrive beautifully encased in our signature luxury gift boxes, ready for your special moment.