
The Lily Blanche Solid 9ct Gold Heart Diamond Locket is an exceptional-quality fine-jewellery keepsake, handcrafted in the UK from solid 9 carat yellow gold. A natural diamond set at the centre of its polished heart front adds a subtle, light-catching detail, while the locket opens to hold two treasured photographs or tiny keepsakes.
Choose our complimentary photo fitting service and we will edit, print, cut and fit your images with care. Add a personal engraving on the smooth reverse to create a diamond heart locket that is wholly your own.
Natural Diamond Heart Locket in Solid 9ct Gold
This is the natural-diamond edition of our solid gold heart locket. The polished heart-shaped front is set with a central natural diamond, creating a meaningful fine-jewellery keepsake with a little extra brilliance. It is crafted in solid 9 carat yellow gold, not gold plated or gold vermeil, and carries a full UK hallmark.
Ethically Sourced Natural Diamond
Each Lily Blanche diamond locket is set with a natural diamond and supplied with a certificate of authentication. Our diamonds comply with the Kimberley Process and United Nations resolutions; we guarantee they are ethically sourced and conflict free, based on personal knowledge and written guarantees from our diamond suppliers. As diamond is April’s birthstone, this locket makes a particularly thoughtful April birthday gift.
Personalise with Two Photos and Engraving
This diamond heart photo locket opens to hold two photographs. Select our complimentary personalisation service and our team will edit, print, cut and fit your chosen images in our Stirling studio. The smooth reverse can also be engraved with an initial, name, date or short meaningful message. For ideas, visit our personalisation page. Please note that engraved items are non-returnable.
Choose Your Solid Gold Chain
Wear the locket alone or select one of three solid 9 carat gold chain styles, each available in 18 inch (45 cm), 20 inch (51 cm), 22 inch (56 cm) and 24 inch (62 cm) lengths:
- Curb Chain: a classic polished link with a refined, everyday look.
- Rope Chain: a twisted design with light-catching texture and a little more presence.
- Belcher Chain: rounded links for a bolder, more substantial finish.
Each chain is solid 9 carat gold, creating a beautifully coordinated necklace from bail to clasp.
Diamond Locket Details
The locket measures 19.5 mm wide and 24.6 mm high including the bail, and weighs 2.85 g without a chain. Depending on your chosen solid 9 carat gold chain, the complete necklace weighs 5 g to 5.67 g. It is independently hallmarked by the Birmingham Assay Office, confirming its precious-metal quality.
Gifting, Delivery and Care
Your locket arrives ready to give in a Lily Blanche ribbon-tied gift box, with a branded velvet storage pouch featuring Intercept® anti-tarnish technology. A complimentary jewellery care kit, polish cloth and gift wrap are included, and a luxury gift bag can be added at checkout. UK delivery is free on orders over £125. Please allow two working days for personalisation; express UK delivery is available for orders placed before noon.
A Diamond Heart Gift to Treasure
Combining the symbolism of a heart, the permanence of solid gold and the light of a natural diamond, this locket is a meaningful anniversary gift, April birthday gift, graduation gift or lasting keepsake for a daughter, mum, wife or partner. For the same classic heart silhouette without a diamond, see our plain solid 9ct gold heart locket.
Features and Benefits
- Solid 9 carat yellow gold heart locket with a certified natural, ethically sourced diamond
- Holds two photos or tiny keepsakes, with complimentary photo editing, printing and fitting
- Engravable reverse for an initial, date or message
- 19.5 mm wide x 24.6 mm high including bail; 2.85 g without a chain
- Full UK hallmark from the Birmingham Assay Office
- Choose no chain or a solid 9 carat gold curb, rope or Belcher chain
- Ribbon-tied gift box, Intercept® pouch and jewellery care kit included
Why You’ll Love It
- A discreet diamond adds light to a classic heart-shaped keepsake
- Two hidden photographs and personal engraving keep loved ones close
- A thoughtful April birthday or milestone gift, made to treasure for years
Find Your Perfect Locket
Not quite what you were looking for?
| chain | Choice of solid 9 carat gold chains |
| collection | Diamond Lockets |
| colour | Gold |
| dimensions | 19.5 mm wide x 24.6 mm high (including bail) |
| engravable | Yes, on reverse of locket |
| gemstone | Natural Diamond |
| hallmark | Yes. Full UK Hallmark |
| item presentation | Complimentary luxury gift bag |
| metal | Solid 9 carat Gold |
| birthstone month | April |
| necklace length | Choice of solid 9 carat gold chain lengths |
| photo size | 20 mm x 17 mm |
| precious metal | Solid 9 carat gold |
| presentation | Ribbon-tied gift box |
| product collection | Lockets |
| assay office | Birmingham |
| Total Weight | 5 g to 5.67 g depending on chain choice. |
| Item Weight | 2.85 g |
Frequently Asked Questions
Is this a natural diamond heart locket?
Are the diamonds in this locket ethically sourced?
How is this different from the plain solid gold heart locket?
Is the diamond heart locket made from solid 9 carat gold?
What are the locket dimensions and weight?
Does the diamond heart locket hold two photos?
Can the diamond heart locket be engraved?
Which solid gold chains and chain lengths are available?
Is the diamond heart locket hallmarked and ready to gift?
You wear it well
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OUR GUARANTEE
With over 1700 5 star reviews on Trustpilot, Klaviyo and Google, we take pride in our craftsmanship & quality.
We are a proud member of the National Association of Jewellers. Our lockets are independently tested and hallmarked with a full UK hallmark by the Assay Office.
We strive to ensure every customer has a great experience and recommends us.
If you are not pleased with your order, please get in touch. We will exchange or refund within 30 days. We will exchange or repair faulty jewellery within 180 days of purchase. T&Cs apply. See our refund policy. Engraved items are not returnable. This does not affet your statutory rights.
WHAT'S IN THE BOX?
Each piece of Lily Blanche jewellery is packed in our studio with love and care. Open the box and take a moment to savour the amazing scent. Under the tissue, you will find a ribbon-tied gift box containing a velvet storage pouch. Our pouches are made for us in the USA and incorporate Intercept® technology to keep your jewellery sparkling when it is not being worn.
In the envelope with your name on it, you will find a polish cloth to keep your silver or gold jewellery clean. There is also a ring sizer. Keep it in your jewel box as it will come in handy.
If your item is a gift, you can opt to add a complimentary, ribbon-tied, luxury gift bag & a gift message at the basket stage.
Our packaging is reusable and recyclable. The care kit is designed to give your jewellery longevity.
We hope you enjoy the experience of shopping with Lily Blanche.
"Outstanding personal service. Fabulous jewellery which arrived beautifully packaged & smelt divine. It felt like I had been shopping in the most exclusive boutique in Bond Street". Olivia H.