Elegance, Perfected.
Our Bestselling Tennis Bracelets
Discover our most-loved designs. Designed for every day. Crafted for a lifetime.
Your Private Diamond Concierge
Harper Jewellery Diamonds is a private diamond house specialising in certified natural and lab-grown diamonds. We work exclusively with eye-clean diamonds, colourless D to F colour and VS clarity or higher — exceptional quality, without the traditional retail markup.
Exceptional quality is our standard, never an upgrade. If you have found Harper, you have discovered something truly special.
The Harper Difference
Compare the market, then discover why so many clients return to Harper. Through our direct-to-client pricing model, we offer exceptional craftsmanship, certified diamonds, and extraordinary quality at a price that simply makes sense.
Our Cult-Favourite Tennis Necklaces
The Art of Everyday Luxury
Discover Our Lab Diamond Collection
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At Harper Jewellery, luxury is personal, considered, and uncompromising.
As your private Diamond Concierge, we work directly with master jewellers and diamond merchants to source exceptional natural and lab-grown diamonds. We work exclusively with colourless D–E diamonds, VS clarity or higher, selected to be beautifully eye-clean and chosen for exceptional cut, brilliance and fire.
By operating without traditional retail layers, we offer extraordinary quality, precision craftsmanship and refined design with complete transparency.
Every Harper piece is meticulously crafted to endure — designed to be worn effortlessly and treasured for a lifetime. From rare natural diamonds to exceptional lab-grown stones and fine moissanite, every creation reflects our unwavering standard for beauty, balance and brilliance.
From our first conversation to final delivery, we guide you through a discreet, bespoke experience, translating your vision into a piece of true significance.
Luxury, without excess. Craftsmanship, without compromise.
This is the Harper difference.
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Australia & Worldwide
We are delighted to offer complimentary Express Shipping across Australia and worldwide.
Please allow 1–3 business days for delivery within Australia and 7–10 business days for international deliveries once your order has been dispatched.
All parcels include full tracking and require a signature upon delivery for your peace of mind.
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We offer a flexible 30-day return window for change-of-mind purchases on unworn, non-custom pieces in their original condition and packaging.
Should you wish to return an item, we will provide a Harper Jewellery store credit, valid for life, so you can choose another piece at your leisure.
Custom and made-to-order items are considered final sale unless faulty.
Please refer to our full Returns Policy here.
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Absolutely. Our Sydney showroom is available by appointment only for private viewings. Please contact us at customercare@harperjewellery.com.au.
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Rather than providing our own valuation certificates, every bespoke lab-grown and natural diamond piece is independently submitted to the International Gemological Institute (IGI) for assessment once completed.
Your IGI report provides an independent record of your diamond's characteristics and authenticity, offering an internationally recognised level of confidence.
At Harper Jewellery Diamonds, we believe in transparent, direct-to-client pricing. Our pieces are priced according to the quality of the diamonds, precious metals, and craftsmanship, rather than to achieve a predetermined valuation figure.
If you require a replacement valuation for insurance purposes, we recommend obtaining one through an independent registered jewellery valuer. This ensures an unbiased assessment based on current market replacement costs, as insurance valuations often differ from the original purchase price.
Our Unwavering Commitment to You
A dedication to exceptional craftsmanship, meticulously selected stones, and a discreet, highly personalised experience — from initial consultation to final delivery and beyond.
This is our promise to you.
30% OFF - APPLIED AT CHECKOUT
A statement in pure brilliance, The Violet 18ct Diamond Tennis Necklace is meticulously handcrafted in your choice of solid gold or platinum. Featuring an extraordinary 18 carats of diamonds, each stone is precision cut, expertly matched for fire and clarity, and individually hand set to create a fluid, uninterrupted ribbon of light around the neckline.
✓ Lifetime Warranty on All Lab & Natural Diamond Jewellery
✓ Independently Certified by IGI & GIA
✓ Direct-to-Client Pricing
✓ Complimentary Insured Express Shipping
✓ Luxury Gift Wrapping on All Orders
Finer details:
Lead Time
Made to order — please allow 4 weeks for our master jewellers to handcraft this piece to perfection
Diamonds
• Approx. 0.14ct (3.5mm) each round brilliant lab-grown diamonds
• Total carat weight: 18ct
Metal
• 9K Solid Gold (White, Yellow, Rose)
• 14K Solid Gold (White, Yellow, Rose)
• 18K Solid Gold (White, Yellow, Rose)
• Platinum
Certification
The completed piece is sent to the IGI laboratory for independent assessment and certification
Setting
• Each diamond is expertly hand-set in a classic four-claw setting
• Secured with a box clasp and double safety latch for maximum security
Diamond Specifications
• Cut: Excellent
• Colour: D–E
• Clarity: VVS–VS
• Certification: IGI
Length
42cm — bespoke sizing available upon request
Size Guide
Shipping
Care Guide
Learn how to choose the best tennis necklace in Australia