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Custom Lab-Grown Sapphire Engagement Rings

Crafted by our jewelers with care and precision.
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Frequently Asked Questions

Your questions, answered.

A custom sapphire engagement ring is designed from the ground up in collaboration with our team. Unlike made to order rings, which use an existing design as a base, a fully custom ring is built around your specific vision, from the choice of sapphire and setting to the metal, band style, and any personal details you want to include.

Our lab grown sapphires are available in blue, pink, purple, and red. Each color carries its own character, and our team can help you choose the shade that best reflects your partner's personality and style. For more details on sapphire options, visit our sapphire education guide.

Timeframes vary depending on the complexity of the design. Our team will provide an estimated completion date once your design is confirmed. For general guidance on production times, visit our Crafting Timeframes page.

Ready to ship rings are pre-crafted and available for immediate dispatch. Made to order rings use an existing design as a base and are crafted after your order with your chosen specifications. Custom rings are designed entirely from scratch in collaboration with our team, giving you complete creative control over every element.

Yes. Sapphires rank 9 on the Mohs hardness scale, making them one of the most durable gemstones available for everyday wear. Their hardness, combined with their brilliance and color range, makes them an excellent long-term choice for a custom engagement ring.

We work with a range of premium precious metals including yellow gold, white gold, and rose gold in various carats. Our team can help you choose the metal that best complements your sapphire and suits your lifestyle. For more details, visit our Precious Metals Guide.

Yes. All Cullen sapphires are lab grown, conflict-free, and carbon-neutral. We also participate in initiatives that offset the carbon footprint of every gemstone and plant a tree with every purchase.

Yes. Every Cullen engagement ring, including custom designs, comes with a Lifetime Manufacturing Warranty covering manufacturing defects for complete peace of mind.

Yes. We offer complimentary resizing on all of our engagement rings. Visit our resizing policy for full details.

Sapphires are highly durable, rating 9 on the Mohs hardness scale, making them well suited to daily wear. Clean your ring with a soft brush, warm water, and mild dish soap, and remove it before activities that could expose it to chemicals or impact. For detailed guidance, visit our Ring Care Guidance page.

Custom Made Sapphire Engagement Rings: Mark Your Love Story, Your Way

A custom sapphire engagement ring begins with a conversation, a sketch, an idea. At Cullen, designing a custom made sapphire engagement ring means working with our experienced team from the very first concept through to the final finishing touches, with expert guidance at every step. From your choice of sapphire color, setting style, metal type, and the finer details that reflect your partner's personality, every element of your ring is chosen with intention. Sapphires are prized for their brilliance, remarkable durability, and the richness of their palette, making them a meaningful and lasting choice for a ring that will be worn every day.

Superior craftsmanship, thoughtful customization, and premium materials are the foundation of every Cullen ring. The rest is shaped by you. Our jewelers and ring specialists are here to guide you through every step of finding the one. Each piece is brought to life using premium precious metals and carbon-neutral stones, including lab-grown diamonds, moissanite and lab-grown sapphires, crafted with exceptional care and attention to detail.

Explore our collection of custom sapphire engagement rings in the United States. Discover our full range of designs online, or book a personalized consultation with our team to bring your vision to life.

Bring Your Custom Ring Design to Life

Cullen specializes in custom made sapphire engagement rings, guiding each client through a collaborative design process that transforms a personal vision into a finished piece. We combine the knowledge of experienced jewelers with an exceptional client care team who will support you from the first conversation to the final reveal. Every custom sapphire ring is crafted in our workshop using conflict-free, carbon-neutral lab-grown sapphires and premium precious metals, ensuring a ring that is as consciously crafted as it is beautiful.

Need help designing your dream custom sapphire engagement ring in the US? Book a virtual or in-person appointment at one of our showrooms to speak with one of our friendly engagement ring specialists.

Where forever begins.

Worldwide Express Shipping Your custom made sapphire engagement ring will be delivered with care, wherever you are. We ship across the US and internationally via express delivery.

Free Resizing We offer free resizing on all of our engagement rings, because the perfect fit is just as important as the perfect design.

Lifetime Warranty Every custom sapphire engagement ring is backed by our Lifetime Manufacturing Warranty, giving you lasting confidence in every detail of your ring.

Tailored Ring Customization From concept to completion, our extensive customization service ensures your custom made sapphire engagement ring reflects every detail of your vision.

Thoughtfully Designed in Melbourne, Australia All of our rings, including our custom sapphire engagement rings, are crafted by our expert jewelers with exceptional attention to detail.

Carbon Neutral Gemstones & Trees For The Future We offset the carbon footprint of every custom sapphire engagement ring and plant a tree for each ring sold, supporting global reforestation.

Custom Design Specialists Our team specializes in designing custom sapphire engagement rings from the ground up, working with you to shape an idea into a ring that is entirely your own.