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Heidi & Hart

HEIDI & HART Tennis Necklace

HEIDI & HART Tennis Necklace

Regular price $8,000.00 AUD
Regular price Sale price $8,000.00 AUD
Sale Sold out

HIEDI & HART Tennis Necklace

Total Carat Weight: 5.8ct-23ct
Type: Lab Grown
Colour: E/F
Clarity: VS

Measuring 17 inches in length. Crafted with 18kt white gold. 

Certified by IGI (International Gemological Institute) & are physiologically identical to natural grown-diamond. These diamonds have been grown using a method that replicates earth's natural process, speeding up production time from years to weeks.

Care Tips


Proper care and handling of your jewellery can help it maintain its beauty and sparkle for years to come.

When you have purchased your precious jewellery, it is important to take proper care to ensure it lasts and maintains its sparkle.

The hardness of a gem is based on a gem trade standard called Moh's Scale, developed in the 19th century.

The scale rates the hardness of a material out of 10 and at each higher number it can be abrasive to a material with a lower number. Diamonds are rated at the highest of 10; rubies and sapphires are 9; emeralds and topaz are 8; garnets, tourmalines and quartz are 7. Those materials below 7 can be scratched or chipped easily if not worn with care. These gemstones include including opal, turquoise, lapis lazuli, coral and pearl.

Gold, silver and platinum metals are only rated at between 2.5 and 4 on Moh's scale of hardness which means they require special care, cleaning and storage.

Some simple and easy steps in maintaining your jewellery:


  • It is very important to have Heidi & Hart check your rings and other jewellery for wear and tear, especially gem set jewellery where the setting or claws can become worn.
  • Have your jewellery cleaned and polished at least once a year. We at Heidi and Hart may recommend that this be done more frequently on certain pieces.
  • Clean your diamonds with a mild liquid detergent and a soft brush. Make sure not to clean.
  • them in sink in the event a stone becomes loose, or the piece goes down the sink. Consider cleaning the jewellery item in a bowl. Make sure no gemstones have become loose and fallen out before you tip the cleaning solution down the sink!
  • Be cautious about cleaning jewellery yourself without more specific knowledge about the material.
  • Have your jeweller re-string your pearls once a year, as the strand could be stretched or worn if they have been in contact with chemicals such as perfumes and hairspray.
  • Have pearls knotted between each one, this will prevent the loss of pearls if the string should break.
  • Wash your pearls with a softened cloth of mild soap and water after taking off to remove perfume, hairspray and cosmetics etc.
  • Wrap your pearls in tissue paper or place in a cloth bag when storing and keep them in a box away from other jewellery as you don't want your other jewellery to scratch the pearls.
  • Store your jewellery in a jewellery roll when travelling, it will keep the jewellery organised and free from tangles and scratches.
  • Ensure you are adequately insured and that you have up to date valuations. Check with your insurer to make sure of their requirements.


  • Diamonds are durable, although they can chip. Avoiding this can be done by not wearing diamond jewellery while doing heavy manual work
  • Remove jewellery before using household cleaners as they can contain chemicals which can be harmful to your precious jewellery
  • Never allow your jewellery to come into contact with chlorine/bleach as it can pit gold alloys.
  • Never put your jewellery down thoughtlessly, as they can easily be missed placed or lost.
  • Always put them into a lined box and store in a secure place.
  • Never wear your jewellery while showering or cleaning, as gold jewellery will develop a soapy film and dull the appearance.
  • Never expose your gemstones to salt water and harsh chemicals, which will dull and erode your gems.
  • Never rub silver with anything other than a polishing cloth or piece of felt.
  • Never allow sterling silver to come into contact with chlorine, as this will tarnish the jewellery.
  • Never clean cultured pearls with chemicals or abrasives, as this will damage and scratch the surface of the pearls.
  • Avoid allowing pearls to come into contact with perfumes, hairspray and cosmetics.
  • Never wear jewellery to bed or while participating in sport, as this may cause kinking, snagging or breakage.

Processing and Delivery

At Heidi and Hart, we are proud to offer exclusive diamond jewellery, meticulously handcrafted with attention to detail. Each piece from our collection is individually handmade to order in Australia, ensuring the highest quality and unique craftsmanship.

Production Time
Since all items are made to order, please allow approximately 4-6 weeks from the time of purchase for the creation and preparation of your piece. This timeframe includes both the crafting and quality assurance processes to ensure your jewellery meets our high standards.

Once your order is ready, we will ship it to you using Australia Post with tracking updates to ensure secure and prompt delivery. The following outlines our shipping policy:

1. Shipping Timeframe: After completion of production, the delivery time will depend on your location and the shipping method selected at checkout. Typically, shipping within Australia takes 2-5 business days, while international shipping can take 7-15 business days depending on customs processes.

2. Out of Stock Items: In the rare event that your chosen piece is out of stock or requires additional time for production, we will notify you immediately. You will have the option to continue with the order and wait the additional production time, choose an alternative item, or cancel the order for a full refund.

3. Expedited Orders: If you require your order sooner than our standard production time, please contact our customer service team at We will do our best to accommodate your request. Please note that expedited production may incur additional charges.

4. Shipping Costs: Shipping costs are free 

5. Tracking Your Order: Once your order is shipped, you will receive a tracking number via email. You can use this number to track your order through the courier’s website.

6. Packaging: Every order is packaged securely and comes in a stunning, premium jewellery box, suitable for gifting and storage.

7. Insurance: All shipments are fully insured until they are delivered to you. We strive to ensure that your order arrives safely and securely.

For any further inquiries or specific requests, please do not hesitate to reach out to our customer support team. We are here to assist you every step of the way.

Warranty Information

Heidi and Hart Warranty Policy

Our Commitment to Quality
At Heidi and Hart, we stand behind the exceptional quality of our diamond jewelry. Each piece is crafted with care and precision in Australia, offered with both a voluntary manufacturer’s warranty and the protections of the Australian Consumer Law.

Heidi and Hart Voluntary Warranty
We provide a six-month warranty from the date of purchase on all Heidi and Hart jewellery, covering any manufacturing defects. Purchases made from our retail locations, authorized stockists, or online at [Heidi and Hart Website URL] are eligible for this warranty. During the warranty period, we will repair or replace items with manufacturing faults at no additional cost. If a direct replacement is not available, we will offer an item of equivalent value.

Note: Your rights under the Australian Consumer Law may extend beyond the six-month period provided by our voluntary warranty.

Our warranty does not cover:
- Jewellery reported as lost.
- Items purchased from our Archive Sale, except for the six-month manufacturing warranty.
- Products damaged through normal wear and tear, misuse, or accident.
- Tarnishing from exposure to harsh chemicals, perfumes, and natural elements.
- Any repairs or alterations not performed by Heidi and Hart, which will void this warranty.

Making a Warranty Claim
To initiate a warranty claim, please bring your jewellery along with proof of purchase to:
- The original place of purchase, whether a Heidi and Hart retail store or an authorized stockist.
-For online purchases, please contact us at

Find store location and more information on our website at

Please retain your receipt to facilitate the warranty process.

Australian Consumer Law
Your purchase is also protected by consumer guarantees under the Australian Consumer Law. These guarantees mean our jewellery must be of acceptable quality, fit for purpose, and match the description provided. If these guarantees are not met, you are entitled to remedies, which may include repair, replacement, or refund, even beyond the expiry of our voluntary warranty.

For more details on your rights under the Australian Consumer Law, please visit

Contact Us
For any questions or assistance with warranty claims, please contact our customer service at:


Phone 0400 336 060

This warranty and your rights under the Australian Consumer Law provide you with a high level of protection, ensuring a satisfactory and confident purchase experience.

Diamond Grading Scale

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