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  • Diamond Key Pendant Heart Design

    SKU: DP0979

    AUD $800.00 incl. GST

    Discover refined beauty with our exquisite diamond key pendant crafted in our Sydney Ernesto Buono Fine Jewellery workshop. This enchanting design features a heart-shaped top, meticulously set with natural pavé diamonds for a dazzling sparkle that catches the light with every movement. Perfect for marking a milestone or as a heartfelt gift, this pendant embodies sophistication and romance.

    Features:

    • Gemstone: 25 natural diamonds

    • Accent Stones: G colour, SI2 clarity pavé setting

    • Metal: 18kt white gold

    Sparkle with Meaning – A Heart Diamond Key Pendant to Treasure

    This finely detailed diamond key pendant is more than just jewellery; it’s a symbol of love and new beginnings. The heart-shaped design glitters with 0.10ct of diamonds, carefully arranged in a pavé style to maximise brilliance. Whether you’re treating yourself or gifting someone special, this pendant makes a meaningful statement.

    Want to complete the look? Pair this diamond key pendant with an elegant 18kt white gold chain or style it with other exquisite pieces from our diamond jewellery collection. The versatile design also layers beautifully with fine necklaces for a chic, personalised style.

    Ready to make it yours? Book an appointment for a private viewing or explore our latest designs on Instagram for style inspiration.

    Read More

    AUD $800.00 incl. GST

    Diamond Badge Made to Order
    Ships in 17 business days
    This item is not eligible for returns or refunds as it is made to order.

    Buy Now Pay Later

    With

    January 6, 2026

    Specifications
    • Gemstone: Diamond
    • Shape: Round Brilliant Cut
    • Diamond quantity: 26 Round Cut
    • Total weight: 0.10 Ct
    • Diamond Colour: G
    • Diamond Clarity: SI2
    • Type: Pendant
    • Origin: Hand made in Australia
    • Other Specification:

      Natural Diamonds

      The chain in the picture is for display purposes only.

    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.

    FAQs – Diamond Key Pendant in White Gold

    What makes the Ernesto Buono diamond key pendant unique?

    Our diamond key pendant stands out for its handcrafted artistry and symbolic heart-shaped design. Unlike mass-produced jewellery, every Ernesto Buono piece is made in our Sydney workshop by skilled artisans with years of experience. The pendant features 25 natural pavé diamonds, each carefully selected for G colour and SI2 clarity, creating a radiant sparkle that’s both elegant and understated.

    The heart design represents love and new beginnings, making this pendant more than just an accessory it’s a meaningful keepsake. Plus, our use of 18kt white gold ensures a luxurious, long-lasting finish that won’t tarnish easily. Whether it’s gifted for an anniversary, milestone, or simply as a token of affection, this pendant offers unmatched sentiment and style.

    Can I customise the diamond key pendant?

    Absolutely. At Ernesto Buono Fine Jewellery, we understand that jewellery should reflect your personal story. You can book a design consultation to customise diamond size, clarity, or even opt for lab-grown diamonds if you prefer. Some clients also request engraving on the key’s stem for an added personal touch.

    We’ll guide you through every step, from sketching your bespoke pendant to selecting the perfect chain. Book an appointment to start creating your unique piece today.

    How do I style a diamond key pendant?

    This versatile pendant complements almost any look. For daily wear, pair it with a simple 18kt white gold chain for understated elegance. Heading out for an evening event? Layer it with a delicate diamond necklace for added glamour.

    If you love coordinated sets, explore our matching diamond earrings or diamond tennis bracelets for a cohesive, polished style. Whether worn solo or layered, this pendant easily transitions from day to night, making it a staple in any jewellery collection.

    Is the diamond key pendant suitable as a gift?

    Yes, this pendant is a thoughtful and meaningful gift for many occasions—birthdays, anniversaries, Valentine’s Day, or even as a bridesmaid’s gift. Its symbolic design makes it particularly popular for romantic gestures.

    We offer elegant gift packaging and can include a personalised note, making it ready to surprise your loved one. Because it’s timeless and not overly trend-driven, it’s a piece that can be cherished for decades, often passed down as an heirloom.

    What care does a diamond key pendant require?

    Caring for your pendant ensures it remains brilliant for years. We recommend regular cleaning with a soft cloth and mild jewellery cleaner to remove oils and dirt. Store it in a fabric-lined jewellery box to avoid scratches.

    For a deeper clean, our boutique offers professional maintenance services. During your visits, we inspect the pavé setting to ensure diamonds remain secure. Avoid harsh chemicals and remove the pendant during vigorous activities to preserve its beauty.

    Can I see the pendant in person before purchasing?

    Definitely. We encourage clients to visit our Sydney boutique to experience the craftsmanship up close. Seeing the pendant in person lets you appreciate the diamond sparkle and try it on for size.

    To ensure personalised attention, book an appointment with one of our jewellery specialists. They’ll assist you with styling advice, matching chains, and even suggest complementary pieces like diamond wedding bands.

    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.

    StarsStarsStarsStarsStars

    - 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.

    StarsStarsStarsStarsStars

    - 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.

    StarsStarsStarsStarsStars

    - Matthew Khouchaba

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

    StarsStarsStarsStarsStars

    - 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

    StarsStarsStarsStarsStars

    - 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.

    StarsStarsStarsStarsStars

    - Norman Ghannoum

    Ernesto Buono Fine Jewellery

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