One in a Trillion | 14k Gold Black Diamond Necklace | Chupi
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Fine Jewellery / Necklaces

One in a Trillion Solitaire Black Diamond Necklace 14k Gold - 16”–18” (41–46cm)

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Ships in 7 days

Free deliveryFree USA tracked delivery

Taxes and duties paid Taxes and duties paid

Returns and exchanges 30 day returns and exchanges

Made for marking those one in a trillion moments – the love, the hope, and everything in between – the beauty of our One in a Trillion black diamond necklace is in its delicate design and light-catching quality. Lovingly handcrafted from carbon neutral recycled 14k solid gold, this necklace is strung with a solitaire trillion cut black diamond. Wear yours as a reminder of a precious moment, alone or layered with other necklaces.

  • Collection: One In A Trillion
  • Metal: 100% recycled 14k gold
  • Chain: Adjustable 16–18″ (41–46cm) or 19–21″ (48–53cm) with lobster clasp
  • Stone type: Black diamond (4mm)
  • Number of stones: 1


  • Recycled gold from a carbon-neutral partner supplier

  • Locally produced, within 100km of our studio and store

  • Recyclable Packaging shipped in 100% compostable mailers

“Something not just sustainable, but beautiful. Each piece of our packaging suite has a little interactive element... They’re beautiful, tactile objects.” Chupi SweetmanFounder & CEO

Commonly Asked Questions

How can I track the delivery of my order?

All orders come with free DHL tracked worldwide delivery, and include all local taxes and duties.

What is your returns policy?

In the event that you would like to return your Chupi piece we offer a 30 day return or exchange policy. You can find the information for returning your piece on and this will help our team look after you in the quickest and most effective manner.

Where is your store located?

Our shop is located in the beautiful Powerscourt Townhouse Centre, it’s a lovely place to spend an afternoon. Come browse the sparkling things, have brunch in the Pepper Pot Cafe and then grab a drink in one of the gorgeous bars on South William Street.

What’s the estimated delivery time?

Once your piece is dispatched the estimated delivery times are as follows:

Ireland: 3-5 working days.
UK: 5-7 working days.
Europe: 5-7 working days.
USA: 7-10 working days.
Australia: 10-12 working days.
Rest of the World: 10-12 working days.