Marquise Diamond Necklace in 18ct White Gold

SKU: DP5725

AUD $3,500.00 incl. GST

Looking for a piece that feels light, modern, and quietly luxe all at once? Our marquise diamond necklace nails it. Four marquise cut natural diamonds sit together in a dainty flower, poised on a fine chain in cool 18ct white gold, so the petals seem to float right at the base of your throat. So it sparkles softly with every movement, yet never feels fussy or heavy. Wear it on its own for understated polish, or layer it with other pieces when you want a fuller look. Either way, this little flower lifts a simple tee just as easily as it finishes an evening dress.

What makes those four small stones shine so brightly? The marquise cut. With its pointed ends and long, curved body, the marquise spreads each diamond wide and bounces the light beautifully, so the stones look larger than their carat weight suggests. Cluster four of them into a flower and you get real presence from a delicate 0.54ct. Set in bright 18ct white gold, the diamonds look extra white and crisp, since the cool metal reflects their fire rather than warming it. The chain comes included, so the necklace is ready to wear straight from the box.

We craft this marquise diamond necklace in 18ct white gold and set each natural diamond by hand for a secure, lasting hold. The diamonds grade F in colour and VS in clarity, which means bright, white stones with no marks you can see. So you get real diamonds, real gold, and real craftsmanship in a piece made to be worn and loved for years.

Features:

  • Gemstone: Four marquise cut natural diamonds, 0.54ct total, F colour, VS clarity
  • Accent Stones: None
  • Metal: 18ct white gold (also available in 18ct yellow gold and 18ct rose gold on request)
  • Style: Diamond flower set into a fine chain, complete necklace with chain included, length adjustable on request

How to Style Your Marquise Diamond Necklace

This is the easy part, because a marquise diamond necklace plays well with almost everything. Match it with a pair of diamond stud earrings for a clean, coordinated look that suits work and weekends alike. Then add a sparkling diamond bracelet to complete the set, ideal if you love our matching marquise flower design on the wrist. Layer the necklace with a longer chain for an on trend stacked look, or wear it solo when you want the flower to shine on its own. Keep your metals in the same white gold family for a crisp, cohesive finish. Want more styling ideas? Follow along on Instagram, where we share new arrivals and ways to wear them.

Why Buy This Marquise Diamond Necklace

So, why this necklace? First, the sparkle. The marquise cut works hard, so four small diamonds read as far more than their carat weight. Second, the ease. The chain is included, so it is ready to wear and sits light and comfy at the throat. Third, the versatility. It suits a young woman receiving her first diamonds and someone marking a milestone, so it works as a treat for yourself or a gift that always lands.

And why choose Ernesto Buono Fine Jewellery? Because we care about every detail, from the grade of each diamond to the finish of the chain. We make jewellery to be worn and loved, not locked away. Keen to see it sparkle in person and check the length at your neckline? Book an appointment and come say hello.

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AUD $3,500.00 incl. GST

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June 22, 2026
Specifications
  • Gemstone: Diamond
  • Shape: Marquise Cut
  • Diamond quantity: 4 Marquise Cut Diamonds
  • Total weight: 0.54ct
  • Diamond Colour: F
  • Diamond Clarity: VS
  • 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

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Your Marquise Diamond Necklace Questions, Answered

Does this marquise diamond necklace come with a chain?

Yes, this one is a complete necklace, so the chain is included and it is ready to wear straight away. The diamond flower is set neatly into a fine white gold chain, giving you a finished, fuss free piece with no extra shopping needed. So you can pop it on the moment it arrives, or wrap it as a gift knowing nothing else is required. Prefer the flower to sit a touch higher or lower? We can often adjust the length to suit your neckline. Just ask, and we will tailor the drop so it falls exactly where you love it.

What is a marquise cut diamond and why choose it?

A marquise is a long, elegant diamond shape with pointed ends and gently curved sides, a little like a tiny boat or an eye. Why do people love it? It spreads the diamond wide, so it looks larger than its carat weight and covers more sparkle for the money. The cut also throws plenty of fire, since those long facets catch the light beautifully. On this necklace, four marquise diamonds form a flower, which makes a delicate 0.54ct feel generous and eye catching. So you get a graceful, contemporary look with real presence, all without a heavy price tag.

What do the diamond specs 0.54ct, F colour and VS clarity mean?

Good question, since the lingo trips people up. The 0.54ct is the total weight of all four marquise diamonds combined, so think of it as the size of the whole flower. F colour sits near the very top of the colour scale, so the diamonds look bright and white with no yellow tint, which reads especially crisp against white gold. VS means very slightly included, so any natural marks inside are so tiny you would struggle to spot them even under magnification. In short, these are high quality, white, clean diamonds in a delicate, modern piece. Real sparkle and real value together.

Why choose white gold, and does it suit me?

White gold has a cool, silvery tone that looks crisp and contemporary, and it makes diamonds appear extra bright since the metal reflects them rather than warming them. So it suits anyone who loves a modern look, already wears white gold or platinum, or wants their diamonds to pop. It also flatters cooler skin tones especially well. Prefer a warmer glow? We make the same flower necklace in yellow and rose gold too. The lovely thing is you do not have to guess. Pop in and try the metals against your skin, and the right one usually becomes obvious in seconds.

How do I clean and care for my white gold marquise diamond necklace?

Easy, and the kit is already at home. Soak the necklace for ten minutes in warm water with one drop of dishwashing liquid, then gently brush the diamond flower with a soft toothbrush to lift the film that dulls sparkle. Rinse, but pop the plug in first, since fine chains slip down drains fast, then pat dry with a soft cloth. Keep it away from bleach, chlorine, and perfume. One white gold tip worth knowing, the bright finish comes from a thin rhodium plating that can soften over years, so bring it in now and then for a quick re plate and polish to keep it gleaming.

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 Buono

    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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