Let Warmth Meet Sparkle with This Oval Cognac Diamond Necklace

SKU: DP0879

AUD $3,960.00 incl. GST

This isn’t your average pendant. With a golden-brown centre stone glowing like rich caramel and a halo of dazzling white diamonds to catch the light, this oval cognac diamond necklace is pure elegance. It’s a conversation starter. It’s also incredibly wearable—crafted in solid 18kt white gold and paired with a matching chain for that ready-to-wear brilliance.

Grace in Every Detail

What makes this piece special? It’s the contrast. That deep, earthy cognac centre stone dances with light thanks to its precise oval cut, while a halo of fine white diamonds amplifies its natural fire. Whether you’re layering it up or letting it shine solo, this pendant offers timeless charm.

Features:
• Gemstone: Natural oval-cut cognac diamond, bezel set in yellow gold
• Accent Stones: White round brilliant cut diamonds in a halo setting
• Metal: Solid 18kt white and yellow gold combination
• Chain: Included, 18kt white gold to match pendant

From Boardroom to Ballroom

This necklace transitions seamlessly from day to night. It’s refined enough for a power suit, glamorous enough for a cocktail dress. And with the mix of yellow and white gold, it plays well with all your other pieces.

Pair with More from Ernesto Buono

Complete the look with our yellow diamond engagement ring and some elegant diamond stud earrings.

Want to see how others are styling theirs? Head over to our Instagram for daily inspiration. Or come try it on—book your appointment with our team today.

Why You’ll Love It

This necklace brings together luxury and warmth, sparkle and softness. The oval shape flatters every neckline, while the mix of metals lets you wear it with absolutely anything. It’s bold, beautiful, and completely unique—just like you.

Choose Ernesto Buono Fine Jewellery when you want artistry, quality, and something truly meaningful.

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AUD $3,960.00 incl. GST

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June 9, 2026
Specifications
  • Gemstone: Diamond
  • Shape: Oval Cut, Round Brilliant Cut
  • Diamond quantity: 1 Cognac Oval Cut
  • Total weight: 0.27 Ct
  • Diamond quantity: 20 Round Cut
  • Total weight: 0.13 Ct
  • Type: Pendant
  • Origin: Hand made in Australia

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

SKU: DP0879 Categories: , ,
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Secure & Insured | 30 Day Returns For Online Purchases*
Order now and your package will ship in 2-4 business days*.
* Depending on customisation required and stock availability.
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FAQs: Your Guide to the Oval Cognac Diamond Necklace

What is the difference between a halo setting and a solitaire?

A halo setting surrounds the central gemstone—like this oval cognac diamond—with a circle of smaller diamonds. This design enhances the visual impact and sparkle of the piece, giving it a luxurious, high-impact look. In contrast, a solitaire setting highlights a single diamond without any accents. The halo setting offers a classic-meets-glamorous vibe, perfect for someone who wants elegance with a bit of extra brilliance. And with this necklace, the halo of white diamonds brings out the depth and fire of the cognac centre stone like nothing else.

Is this necklace suitable for everyday wear?

Absolutely, yes. The 18kt white gold chain and sturdy bezel setting offer durability, while the natural hardness of diamonds makes them ideal for daily wear. You can confidently wear this necklace to work, out to dinner, or even layered with your weekend essentials. Just remember to take it off before swimming or showering to maintain its brilliance. Gentle cleaning with a soft cloth and warm soapy water every few weeks will keep it sparkling beautifully.

What does the two-tone gold design offer?

The combination of white and yellow gold in this piece offers both versatility and aesthetic appeal. The white gold chain and halo provide a crisp, modern backdrop, while the yellow gold bezel around the cognac diamond warms the centre and enhances its rich tone. This contrast makes the necklace a dream to style—it pairs beautifully with either white or yellow gold jewellery, so you don’t need to worry about matching metals.

How do I layer this necklace with other pieces?

Start with the halo pendant as your hero piece. Add one shorter fine chain in white gold for a subtle layered effect or a longer charm necklace for a more bohemian stack. You can also pair it with a minimal choker or add a bold chain in yellow gold to play up the two-tone detail. Because of its shape and dimension, this necklace is the perfect anchor for any layered look—it’ll never get lost among the rest.

Who is this necklace ideal for as a gift?

Anyone who loves classic design with a touch of warmth and individuality. It’s a brilliant gift for anniversaries, milestone birthdays, or celebrating a special achievement. Its unique colour palette and timeless silhouette make it a treasured keepsake for years to come. Plus, it arrives in our signature Ernesto Buono packaging—ready to gift and impress. You can even book an appointment to personalise the experience or customise your selection.

Are the diamonds natural or lab-grown?

All diamonds used in this necklace, including the central cognac stone and the white halo accents, are 100% natural. At Ernesto Buono Fine Jewellery, we are committed to sourcing only high-quality, ethically obtained natural diamonds. Each stone is carefully selected for its beauty, fire, and clarity to ensure you receive a piece that’s both rare and radiant. If you have questions about certification or sourcing, our team will be happy to walk you through it during your visit or consultation.

 

600+ 5 Star
Google Reviews

600+ 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

Can’t find what you like? Did you know that you can customise your own engagement ring or send us photo of what you like and we can make it for you?

Meet our Jewellers and Designers

Meet our team

  • Ernesto

    Ernesto

    CEO Jewellery Designer.

  • Angelina

    Angelina

    Store Manager

  • Maria

    Maria

    Diamonds Specialist

  • Steff

    Steff

    Jewellery Designer

  • Hind

    Hind

    Jewellery Designer

Google Map Terrain

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.

Star Star Star Star Star

- 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.

Star Star Star Star Star

- 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.

Star Star Star Star Star

- Matthew Khouchaba

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

Star Star Star Star Star

- 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

Star Star Star Star Star

- 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.

Star Star Star Star Star

- Norman Ghannoum

Ernesto Buono Fine Jewellery

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