Lab Grown Diamond Tennis Necklace in 18ct White Gold

SKU: LNC0008

AUD $10,900.00 incl. GST

After the ultimate everyday luxury? Our lab grown tennis necklace is exactly that. A continuous line of 172 round brilliant lab grown diamonds runs the full length of the necklace, totalling a magnificent 8.56ct, each stone set in neat claws so it sits close to the next in bright 18ct white gold. So a river of diamonds sits at your throat, catching the light with every move, endlessly elegant yet easy to wear. Every stone here is a lab grown diamond, a real diamond with the same sparkle as a mined one, simply made in a smarter, more affordable way, and the cool white gold makes them look even brighter. Timeless, dazzling, and beautifully versatile, this is the piece that lifts a plain top or crowns a gown.

Why does a tennis necklace feel so special? The unbroken line of light. Set one after another in a flexible line, the diamonds move and shimmer with you, so the whole necklace looks like a strand of pure sparkle. The round brilliant is the most fiery diamond cut there is, so each of these 172 stones throws plenty of light, and at 8.56ct in total the effect is glorious. The cool white gold sits quietly behind the stones and lets them look as white and bright as possible, while a hidden box clasp keeps the line clean and continuous. As a result, it is as comfortable and wearable as it is breathtaking.

We craft this lab grown tennis necklace in 18ct white gold and set every lab grown diamond by hand. To be completely clear, these are lab grown diamonds, which are real diamonds with the same beauty as mined stones, and they are matched for colour and sparkle so the whole line glitters evenly. So you get real gold, top quality lab grown diamonds, and remarkable value.

Features:

  • Gemstone: 172 round brilliant lab grown diamonds, 8.56ct total
  • Accent Stones: None
  • Metal: 18ct white gold (also available in 18ct yellow and rose gold on request)
  • Style: Continuous claw set tennis line with a box clasp, length options available

How to Style Your Lab Grown Tennis Necklace

Here is the fun part, because diamonds love company. Explore our necklaces to layer with a fine chain, then complete the look with a matching tennis bracelet for head to toe sparkle. This necklace is stunning worn alone against bare skin or a simple neckline, and it layers beautifully with a longer pendant for a modern, stacked look. The white gold pairs with both cool and warm tones, so wear it with whatever you already love. Want more inspiration? Follow along on Instagram, where we share new arrivals and styling ideas.

Why Buy This Lab Grown Tennis Necklace

So, why this necklace? First, the sparkle. A magnificent 8.56ct of round diamonds makes a bold, brilliant statement. Second, the versatility. A tennis necklace dresses up a gown or elevates a plain top, day or night. Third, the value. Real lab grown diamonds in solid 18ct gold give you serious size and quality for a fraction of a mined piece.

And why choose Ernesto Buono Fine Jewellery? Because we treat every piece as personal. We sit with you, listen, and help you find or create jewellery you will treasure, with no pressure and no jargon. Ready to see it sparkle in person or design your own? Book an appointment and come say hello.

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AUD $10,900.00 incl. GST

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September 23, 2026
Specifications
  • Gemstone: Diamond
  • Shape: Round Brilliant Cut
  • Diamond quantity: 172 Round Brilliant Cut Diamonds
  • Total weight: 8.57ct
  • Diamond Colour: F
  • Diamond Clarity: VS
  • Type: Necklace
  • 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: LNC0008 Categories: , ,
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Your Lab Grown Diamond Tennis Necklace Questions, Answered

What is a tennis necklace?

A tennis necklace is a flexible line necklace set with a continuous row of matching diamonds running all the way around, so it looks like a strand of pure sparkle at the throat. It takes its name from the tennis bracelet, which became famous after a player’s diamond line bracelet came loose during a match. This one features 172 round brilliant lab grown diamonds set one after another, totalling 8.57ct. Why choose one? A tennis necklace is the ultimate everyday luxury, elegant, timeless, and endlessly versatile, since it dresses up a gown or lifts a plain top just as beautifully.

Are these lab grown or natural diamonds?

These are lab grown diamonds, and we want to be completely clear about that. A lab grown diamond is a real diamond, with the exact same chemical, physical, and optical properties as one mined from the earth, so it sparkles identically and lasts just as long. The only difference is the origin, since it is grown in a controlled setting rather than dug from the ground. Why choose lab grown? Value, mostly. It is what makes a magnificent 8.57ct necklace like this achievable at this price, when a mined equivalent would cost many times more. So you get real diamonds and real gold, with impressive size, for remarkable value.

How many diamonds are in this necklace?

This necklace is a real showpiece. It features 172 round brilliant lab grown diamonds set in a continuous line all the way around, totalling a magnificent 8.57ct, so there is sparkle right around your neck. Each diamond is set by hand in neat claws and matched for colour and sparkle, so the whole line glitters evenly with no gaps or dull spots. The round brilliant cut is the most fiery diamond shape, so every stone throws plenty of light. So you get a bold, luxurious river of diamonds that catches the eye from every angle, beautifully made in solid 18ct yellow gold.

What length is the necklace, and can it be adjusted?

We will make sure it sits perfectly for you. A tennis necklace usually sits around the base of the neck, and the most popular lengths fall between 16 and 18 inches, so it rests just below the throat. We can adjust the length to suit your neckline and how you like to wear it, whether closer as a collar or a touch longer to layer. It fastens with a secure box clasp that keeps the diamond line clean and continuous. So just come in or get in touch, and we will size it so it sits beautifully every time you wear it.

Is a tennis necklace comfortable to wear every day?

Yes, that is part of its charm. Because the line is flexible and the diamonds are set low and securely, the necklace drapes smoothly and sits comfortably against the skin, so you can wear it from day to night without a thought. Many people love a tennis necklace as an everyday piece precisely because it goes with everything and never feels fussy. The secure box clasp keeps it safely on. As with any fine diamond piece, take it off for the gym, sleep, and swimming to protect it, and it will keep sparkling beautifully for many years.

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

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- 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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