Promise Trinity Necklace
Hand Set Stones
Anti-Tarnish Coating
Lifetime Sparkle
5 Year Warranty
30 Day Returns & Exchanges
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10mm interlocking hoops symbolising past, present & future
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40cm chain + 5cm extender
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Water-resistant, anti-tarnish e-coating
Promise 5 Year Warranty
Your jewelry is more than an accessory - it’s a symbol of love, commitment, and life’s cherished moments. That’s why every piece comes with a 5-year warranty for complete peace of mind.
We’ll repair any manufacturing faults free of charge or replace your piece if a repair isn’t possible.
If your warranty has expired, or any accidental damage has occurred please reach out. We’ll still do our best to help with repairs or replacements at a reduced fee.
Materials
Gold Vermeil - A thick layer of real 18k or 14k gold bonded to solid sterling silver - up to 25x thicker than standard plating. Designed to last, crafted to shine, made to hold meaning.
Solid 925 sterling silver - finished with rhodium - a rare metal from the platinum family. This bright, durable layer protects against tarnish and keeps every piece shining beautifully.
Rhodium Plating applied to sterling silver. Rhodium is one of the world’s most precious metals, known for its mirror-like shine and exceptional resistance to tarnishing.
Protective anti-tarnish coating that helps preserve shine and colour over time. It adds an invisible shield against daily wear, so your jewelry stays as beautiful as the day you received it.
Conflict-free simulated diamonds, hand-set promise cubic zirconia for a flawless finish.
Sparkle Index (Refractive Index)
Our stones: 2.18 | Natural diamonds: 2.41
Durability (MOHS Hardness)
Our stones: 8.5 | Natural diamonds: 10
Shipping
We ship directly from our UK warehouse with care and speed.
Free 24-hour delivery on all orders over £130.
Orders placed before 1pm UK time (Monday-Friday) are dispatched same day.
24 hour & 48 hour delivery (Monday-Saturday) available at checkout.
Every parcel is fully tracked and beautifully packaged - ready to gift the moment it arrives.
Please note we do not ship on weekends or bank holidays. Fulfilment
and delivery times may vary due to busy periods and or courier delays.
Choose options
This truly is my favourite necklace. I haven’t taken it off since I got it back in November, and it’s now mid-January. I’ve slept in it, showered in it and even worn it to the gym, and there isn’t a single sign of tarnishing. It still looks as good as the day I got it, and I’ve had so many compliments, just like I do with all the jewellery I own from The Promise Co.
After 49 years of being together, My husband never ceases to surprise me, This necklace is just perfect it’s dainty and so beautiful (I love simplicity) it symbolises our past our present and our future together ❤️ I’m not an avid jewellery wearer but I don’t think il ever take this off 🥹
The first necklace from The Promise Co. Did not disappoint! I’ve had multiple rings from here over the years and the quality has always impressed me. This necklace is no different! The chain is so dainty and light which makes it look really sophisticated and the charm itself is a classic design that I feel I can wear with anything. The three rings also move slightly as the necklace moves which I love!
The perfect necklace for every single day - I literally never take it off. It's so subtle and dainty and goes with every outfit. I love the meaning behind the design and the quality is unbelievable for the price, I got it as a present to myself but I think anyone would want to unwrap this! Also comes in beautiful packaging.
The promise co do it again! This necklace is dainty perfection. Quality is incredible, as you would expect from all promise co pieces. It sits beautifully, and I love that there's two different options for chain lengths. It's a truly timeless piece, and one I will treasure forever. Simple by nature, but so beautifully unique. You will not be disappointed.
Charlotte is just so incredible. This necklace is just perfection, the most beautiful necklace that could have so may special meanings as to why it’s yours 🤍 An everyday piece but perfect for any occasion, you must get this necklace <3
As a nickel free girly I always struggle to find high quality pieces that I can wear everyday - I’ve had a few rings from the promise co so when I saw that they were bringing out necklaces I RAN to the website. It’s become my favourite piece in my collection and I’ve been wearing it everyday since it arrived! Safe to say I can’t wait for the next launch!! Xxx
what makes us different
Our pieces are symbols of love, commitment, and the moments that matter most.
That's why we obsess over every detail.
So each and every piece is made to be kept forever.
Every piece is hand-set by our master jewellers, backed by a 5-year warranty, and made to the best-in-class standards of the National Association of Jewellers.
A promise you can trust.
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