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Engagement ring with marquise lab-grown diamond set in 18ct yellow gold with accent stones.
 
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Engagement Ring with Lab Diamonds Marquise Cut

SKU: LDR0037

AUD $6,900.00 incl. GST

Make your special moment unforgettable with this exquisite engagement ring featuring lab diamonds set in radiant 18ct yellow gold. Designed to capture hearts, this masterpiece combines modern elegance with sustainable luxury. The marquise-cut lab diamond at its centre creates a captivating focal point, while accent diamonds add brilliance. If you’re planning a proposal or celebrating a milestone, this ring is the perfect expression of your love and commitment.

A Modern Masterpiece in Sustainable Luxury

At the heart of this breathtaking ring is a 3.00ct marquise-cut lab-grown diamond, known for its exceptional sparkle and elongated elegance. Its shape not only enhances the size of the stone but also flatters the finger beautifully. To complement the centre stone, two round brilliant-cut diamonds (totalling 0.37ct) adorn the bypass-style band. Together, these diamonds create a harmonious balance that is both timeless and sophisticated.

Why choose lab-grown diamonds? They deliver the same stunning brilliance and durability as natural diamonds, but they are ethically produced. This makes them a responsible and meaningful choice for those who care about sustainability.

Features You’ll Adore:

  • Main Gemstone: 3.00ct marquise-cut lab diamond (E-VS2)
  • Accent Stones: Two round brilliant-cut lab diamonds (0.37ct total)
  • Metal: 18ct yellow gold
  • Design: Bypass setting that adds a contemporary yet timeless flair

Unmatched Craftsmanship and Thoughtful Design

Each Ernesto Buono engagement ring is designed with precision and passion. Unlike mass-produced jewellery, every detail of this ring reflects our artisans’ expertise. The bypass setting enhances the marquise diamond’s shape while offering a unique, sculptural appearance. Combined with the warmth of 18ct yellow gold, this piece stands out as an extraordinary symbol of love and dedication.

Why Choose Ernesto Buono Fine Jewellery?

At Ernesto Buono, we believe every love story deserves a bespoke masterpiece. With over 18 years of experience, our Sydney-based atelier focuses on creating timeless, handcrafted pieces that last a lifetime. If you’re seeking luxury, sustainability, and superior craftsmanship, our engagement rings are designed with you in mind.

Explore more of our designs on our Instagram or visit our appointment page to create your dream piece.

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18k Yellow Gold
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18k Yellow Gold
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AUD $6,900.00 incl. GST

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Specifications
  • Gemstone: Diamond
  • Shape: Marquise Cut
  • Centre Stone Shape: Marquise Cut
  • Centre Stone Weight: 3.08 Ct
  • Diamond quantity: 20 Round Cut
  • Total weight: 0.37 Ct
  • Diamond Colour: E
  • Diamond Clarity: VS2
  • Certification: IGI Laboratory
  • Origin: Hande made in Australia
  • Other Specification:

    Laboratory-Diamond

Diamond Care

At Ernesto Buono Jewellery, we appreciate your purchase. To help you get the most out of your design, we extend your experience with a complimentary lifetime cleaning service.

When you visit one of our stores through the years, we can provide your beloved Ernesto Buono jewellery with a professional clean to help you get the most out of your piece.

Our Diamonds

When shopping with Ernesto Buono Jewellery, we only offer the best for our customers, including the quality of materials. We sell both natural and lab-grown diamond jewellery. For the majority of our jewellery, including our engagement rings, we rely on GIA or IGI graded diamonds. We will always clearly state otherwise if we are using anything else.

This doesn’t only guarantee the quality but also the authenticity of the sourced stones. For proof of purchase, our engagement rings come with the relevant certificates.

Free Shipping

All purchases come with complimentary free shipping on orders Australia-wide. Our shipping is secure and insured. We ship items within 2-4 business days depending on stock availability.

All Made-to-Order products will be shipped anywhere from 14-25 days from your order being placed.

Read our full Shipping & Delivery Policy

Secured Payments

We only use secure payment processes so you can shop with peace of mind. We also have finance options available through Zip Pay.

Hand Crafted

Ernesto Buono Jewellery is proud to offer the expertise of our in-house master jewellers.

30-day Guarantee

We will exchange or give your money back with our free 30-day exchange*. We also offer free resizing if required, however, the responsibility of postage associated with resizing lies with the customer.

All items listed on our website are available in standard sizes and diamond specifications. However, should you require a particular size, metal or diamond specification not available, we offer the option to customise and create the item to your requirements.

*In instances where the item specified is unavailable and customisation is required, kindly note that crafting these items to order requires additional time. It’s important to also note that all custom orders are non-refundable due to their personalised nature. We are unable to accept returns or issue refunds on custom-made-to-order items.

Read our full Returns & Refund policy

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SKU: LDR0037 Categories: , , , ,
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5 STAR GOOGLE REVIEWS

FAQs About Engagement Rings with Lab Diamonds

What are lab-grown diamonds, and are they real?

Yes, lab-grown diamonds are real diamonds. They share the same physical, chemical, and optical properties as natural diamonds because they are grown under controlled conditions that mimic natural diamond formation. The key difference lies in their origin. While natural diamonds are mined, lab diamonds are ethically produced in a laboratory, making them a sustainable and eco-friendly choice.

Are lab diamonds as durable as natural diamonds?

Absolutely. Lab-grown diamonds have the same durability and hardness as natural diamonds, ranking 10 on the Mohs scale. This makes them ideal for daily wear in engagement rings. Whether you’re concerned about scratching, chipping, or long-term wear, lab diamonds will stand the test of time just like their natural counterparts.

Why choose lab diamonds for an engagement ring?

Lab diamonds are a popular choice because they are ethically sourced, sustainable, and more affordable than mined diamonds. They offer exceptional brilliance and beauty while reducing environmental impact. For couples seeking luxury without compromise, lab-grown diamonds are the perfect option.

Does this engagement ring come with certification?

Yes, every lab-grown diamond from Ernesto Buono Fine Jewellery comes with a certification verifying its quality and authenticity. Our diamonds are graded based on the 4Cs—cut, colour, clarity, and carat weight—ensuring complete transparency and peace of mind for our customers.

How should I care for my lab diamond engagement ring?

To keep your ring looking its best, clean it regularly using warm water, mild soap, and a soft brush. Avoid harsh chemicals and remove your ring during heavy activities to prevent scratches. It’s also a good idea to have your ring professionally checked once a year for any maintenance needs.

Can I customise this engagement ring design?

Yes, Ernesto Buono Fine Jewellery specialises in bespoke designs. If you want to personalise this engagement ring—whether it’s adjusting the diamond size, adding engraving, or changing the band style—our team will work with you to create a one-of-a-kind masterpiece that reflects your love story. Schedule a consultation on our booking page.

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+ 5 Star Google Reviews

+ 5 Star
Google Reviews

Free Secure & Insured Shipping

Free Secure &
Insured Shipping

Free Ring Resizing

Free Ring
Resizing

Life Time Cleaning & After Care Support

Life Time Cleaning
& After Care Support

Live Customer Support Email, Phone or Chat

Live Customer Support
Email, Phone or Chat

Zip Money & Finance Options

Zip Money
& Finance Options

Meet our Jewellers and Designers

Meet our team

  • Ernesto

    Ernesto

    CEO Jewellery Designer

  • Maria

    Maria

    Diamonds Specialist

  • Steff

    Steff

    Jewellery Designer

  • Silvana

    Silvana

    Jewellery Designer

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Google Reviews

Very smooth and easy experience dealing with Ernesto. He melted my old gold and custom made me a necklace that turned out exactly how I wanted it and to great quality. Highly recommend.

- Diab Finianos

The best and most honest jeweler in Sydney , Ernesto is a pleasure to deal with and so are all his staff. I highly recommend Ernesto and his team for quality service and jewellery.

- Steve

Ernesto is the best person to deal with. He will assist and help you with anything possible and he is very easy going with the best prices and always looks after his clients. Highly recommend.

- Matthew Khouchaba

Ernesto and Maria have always provided me with the best service and quality jewelry for years. Highly recommend, best in the business.

- Jeanpaul Maugeri

Always a pleasure to deal with Maria and Ernesto bought both the wedding ring and band from here great quality and great deal thankyou again

- Sam and Sarah

I have to say best dicision I ever made. Ernesto was so helpful and if I could give him more than five stars I would.

- Norman Ghannoum

Ernesto Buono Fine Jewellery

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