
Sapphire Engagement Rings
Crafted by our jewelers with care and precision.
Engagement Rings — The Start of Your Forever.
At Cullen, we recognize the importance of finding an engagement ring that reflects your style and the unique beauty of your relationship.
Using responsibly sourced materials and lab grown gemstones, every Cullen engagement ring is thoughtfully designed in Melbourne, Australia and brought to life by our expert jewelers. Whether you prefer a solitaire, halo, vintage-inspired ring or an entirely unique design, our wide variety of existing styles and specialized custom design process ensures there is a perfect fit for everyone.
Explore the collection online or begin your journey in one of our showrooms with a personalized design consultation — whatever the process, we're here to help you start your forever with the ring of your dreams.
Find Your Perfect Engagement Ring with Cullen
Cullen specializes in custom engagement rings, handcrafted to mark one of life’s most meaningful moments in a style unique to your love.
Our extensive range of existing engagement ring styles and personalized custom design process enable you to explore, envision and create an engagement ring that is both long-lasting and personal to your love story.
Whether you’re after a sleek solitaire or a vintage-inspired halo of diamonds, our experienced jewelers and warm, knowledgeable client service team will guide you through every step of the journey — from your first consultation to the final polish.
Each ring is made in our Australian workshop using conflict-free, sustainable lab-grown diamonds, moissanite, or sapphires, so you can feel confident that your ring is as ethical as it is exquisite to look at.
Need a little guidance? Don’t hesitate to contact us or book an in-person appointment with one of our friendly engagement ring specialists to begin designing your dream piece.
Why Cullen
Worldwide Express Shipping No matter where you are in the world, your dream ring will go the distance. We proudly ship our wedding and engagement rings across the United States and internationally, ensuring your ready-to-ship engagement ring arrives safely and swiftly.
We offer free resizing on all engagement rings to ensure the perfect fit, whether you've chosen one of our ready-to-ship engagement rings or something uniquely your own.
Lifetime Warranty Our engagement rings are built to last a lifetime. Each piece is backed by our lifetime manufacturing warranty , giving you complete peace of mind.
Free Ring Customization From unique engagement ring designs to personalized band details, we offer complimentary customization so you can craft a ring that's truly one of a kind.
Handcrafted in Australia Every ring — including our ready-to-ship engagement rings — is designed and handcrafted in our Melbourne workshop with exceptional attention to detail.
Conflict-Free, Sustainable Materials We offer a variety of unique options — from ready-to-ship lab diamond engagement rings to sapphire engagement rings — all ethically lab grown and sustainably sourced.
Carbon Neutral & One Tree Planted Partner We offset the carbon footprint of every order and plant a tree for each ring sold, supporting global reforestation.
Custom Design Specialists Whether you're interested in solitaire oval engagement rings or striking emerald cut engagement rings , our team specializes in creating custom pieces that reflect your personal style.
Looking for a specific style? Choose from our collections below:

Emerald - Sky Blue
Colour: Sky Blue
Clarity: Eye Clean
Origin: Lab Grown
Lifetime Warranty
Free Resizing
Free Express & Insured Shipping
Shipped Discretely
Finance Available
Trees For The Future
Cullen Jewellery offers free express shipping for all Australian orders and for international orders over 400 USD. Every order is sent via insured express post, ensuring your special purchase arrives safely.
Delivery Time Estimates (once your order is completed)
Australia: 2-5 Business Days
New Zealand: 2-5 Business Days
USA: 6-10 Business Days
Rest of the World: 7-10 Business Days
Our Services
Receive custom engagement ring guidance from our expert team in person and online.
What Our Clients Say
Here's what our clients have to say about their Cullen experience.
Education
We provide industry-leading guidance on fine jewellery and in-depth education for lab grown diamonds and moissanite stones, along with the anatomy of an engagement ring.

Crafting of your ring typically takes 50 business days, with expediting options available if you need it sooner. The exact completion date can be conveniently found on each product page. Please note that shipping is not included within this date and you can find all our shipping information here. For all timeframe information please visit our crafting timeframes page.
If you need help selecting from our range of diamond engagement rings or lab grown engagement rings, please contact us. Our team, experienced in both lab created diamonds and moissanite, will assist you.
Cullen Jewellery offers a Lifetime Manufacturing Warranty on all our rings, including engagement, wedding and fashion rings, giving you confidence and peace of mind with every purchase. For all other fine jewellery pieces, such as earrings, chains, pendants, bracelets and more, we provide a 2-Year Manufacturer Warranty. View our full warranty details.
Yes! At Cullen Jewellery, we offer free international shipping on all orders, including those for the perfect diamond engagement ring. Shop online and add your chosen piece to your shopping bag with ease.
Import Duties and Taxes
Most of our orders are sent as DDP (Delivery Duty Paid - this means import duties & taxes are covered). However, there may be cases where you may have to pay local import taxes and duties, which Cullen Jewellery does not cover, as some countries do not allow us to pay them as the sender. For more details, please check our Shipping page or contact your local customs agency.
Our showroom, featuring a range of lab grown diamond rings and moissanite pieces, is open by appointment only. Discover our collection of lab grown diamond engagement rings and moissanite in person or online.
At Cullen Jewellery, we offer free ring sizers for our entire range. Measure your ring size comfortably at home for that perfect fit.
Absolutely! We understand that many of our products are purchased as surprise gifts for events such as an engagement. For this reason, we use subtle packaging that will not give away the contents of the package.
Please let us know if we can help you in any other way to keep your purchase a surprise!
At Cullen Jewellery, we accept payments via direct debit, cash (Melbourne only) or card. If you are looking for an extended payment plan, we also offer interest-free finance via Humm.
At Cullen Jewellery, we value the craftsmanship and dedication involved in making each unique piece of special occasion jewellery. Therefore, we do not offer refunds/returns or exchanges unless the item is faulty or damaged. Please see our Returns Policy for more information.
Absolutely! At Cullen Jewellery, we offer One Free Resize for engagement and wedding rings to use within the first 12 months of your ring's completion (subject to eligible design style/metal type).
*There are certain resizing restrictions for each ring design. The specific information can be found on the product page of each ring. Read more about resizing.
