Tennis Necklace 10Ct Lab Diamonds in 18kt White Gold

SKU: LNC0005

AUD $13,200.00 incl. GST

Looking for a showstopper that adds timeless sparkle to your collection? This tennis necklace in 18kt white gold features 172 lab-grown diamonds totalling 10 carats of breathtaking brilliance. Whether you’re dressing for a black-tie event or elevating a casual look, this piece brings effortless elegance and a modern sustainable touch.


Sparkle Without Compromise

Each lab diamond, graded F colour and VS clarity, is carefully set in a continuous line around the neckline for maximum brilliance. The polished 18kt white gold setting enhances the sparkle and provides long-lasting durability. You’ll love the way it catches the light and turns heads — without sacrificing your values.

Wear it solo for a sleek, statement look, or layer it with delicate chains for a chic, contemporary stack.


Features:

Gemstone: Lab-grown diamonds (F colour, VS clarity)
Accent Stones: 172 diamonds totalling 10 carats
Metal: Solid 18kt White Gold
Style: Classic tennis necklace
Setting: Secure and flexible tennis mount
Finish: High-polished, mirror-like shine


Style It Your Way

Pair this necklace with our lab diamonds tennis bracelets for a glam finish.

Want to try it on? Book your private appointment at our Sydney boutique to experience it in person.

Also, head over to our Instagram for styling inspiration and behind-the-scenes looks.


Why Choose This Tennis Necklace?

Because you deserve brilliance that aligns with your values. Lab-grown diamonds offer the same dazzle and durability as mined stones — minus the environmental cost. This necklace delivers luxury, quality, and timeless design, all in one ethical package.

Need a different carat weight or length? We’ve got you. Book a consultation and let’s tailor it to suit your vision.

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AUD $13,200.00 incl. GST

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This item is ready to ship and is eligible for our 30-day returns policy on items purchased online.

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With

July 10, 2025
Specifications
  • Gemstone: Diamond
  • Shape: Round Brilliant Cut
  • Diamond quantity: 172 Round Cut
  • Total weight: 10 Ct
  • 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

Fast, Free Shipping Fast, Free Shipping
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.
Read our full terms and condtions.

FAQ: Everything You Need to Know About Our Lab Diamond Tennis Necklace

Are these real diamonds?

Yes — lab-grown diamonds are 100% real. They’re physically, chemically and optically identical to mined diamonds. The only difference is origin: lab diamonds form in a controlled environment, not underground. They offer the same sparkle, durability, and beauty — without the environmental cost.

Can I wear this tennis necklace every day?

Absolutely. This piece is designed for frequent wear. Its 18kt white gold setting provides strength and shine, and the secure tennis-style mounting ensures the diamonds stay in place. Just remove it before high-impact activities or exposure to harsh chemicals like chlorine.

What is the total carat weight?

The necklace features 172 lab-grown diamonds with a combined total of 10 carats. Each stone is hand-selected for F colour and VS clarity to ensure uniform sparkle throughout the necklace.

Can I customise the length or carat size?

Yes, you can. We offer custom design services, so you can choose a different length, diamond size, or even switch metals. Book a custom appointment to chat with one of our jewellery experts.

How does this necklace compare to one with mined diamonds?

Visually, you won’t notice any difference. Lab diamonds offer the same brilliance and structure as mined ones, often at better value and with lower environmental impact. If you’re after ethical luxury, lab-grown is the way to go.

Is this necklace a good gift idea?

Yes, it’s an incredible gift — and one that makes a lasting impression. With its timeless tennis design, 10 carats of lab-grown diamonds, and ethical craftsmanship, this necklace is perfect for marking milestone moments like anniversaries, birthdays, weddings or graduations. It’s a show of love, style and intention all in one. Plus, because it’s crafted with sustainable lab diamonds, you’re giving a gift that looks good and feels even better. Want to make it more personal? You can pair it with matching earrings or a bracelet from our diamond jewellery collection or book an appointment to explore custom options.

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

  • Silvana

    Silvana

    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.

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- 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.

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- 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.

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- Matthew Khouchaba

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

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- 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.

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- Norman Ghannoum

Ernesto Buono Fine Jewellery

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