Immersive jewellery

Bespoke jewellers and artisan explorers

Our Process

Engagement rings

Bespoke engagement rings crafted in London

Creating bespoke jewellery and engagement rings is deeply embedded in our roots. Unconstrained by a set collection, every ring is made to order and uniquely designed in our London atelier.

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Blackacre founder Samuel Stirrat Sam Stirrat Sri Lanka

Founder's vision

A young progressive team

Led by designer & Founder Samuel Stirrat, we are a young progressive brand seeking to define a new era of responsible luxury with education and transparency at our core.

We capture the essence of exploration, inviting you on a journey to discover the world’s most exceptional diamonds & gemstones, then immerse you in the creative process designing a piece to be cherished for life.

About us
Rough sapphire low resolution

Sustainability & ethical sourcing

Expedition sourced gemstones

We are proud of the advances we are making in pursuit of a pioneering a new era of responsible luxury. We aren't here say we are perfect, we simply want to explain our approach, the positive practices we adopt and highlight our continual pursuit of perfection...

This all starts with our expeditions... With annual expeditions to far flung corners of the earth in search of precious gems, we want to immerse you in our world. We are building long term personal relationships to create a sustainable future for the industry we love.


Expedition sourced (snapshot)

Our curated selection of expedition sourced gemstones

Visit our Gem Vault to view a truly one-of-a-kind collection of sustainably sourced exeptional diamonds and gemstones. Uniquely created by the natural world, discover the perfect diamond or gemstone that embodies your unique personality and entrust our expert London based jewellery designers to craft a bespoke engagement ring or jewellery design tailored to your own story.

Gem Vault
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Responsible Luxury

Paving the way in a new era of responsible luxury, as a B-Corp certified jewellery designer, we are amongst the world's first top tier luxury jewellers to achieve the certification.

B-Corp Certified

Signature designs

Timeless & elegant designs with a contemporary finish

Our house style and signature designs are identified by their timeless and elegant presence, often infused with a contemporary twist. Minimalist silhouettes and clean crisp designs are filled with a rich intricacy, placing the chosen diamonds or gemstones as the centrepieces, ensuring each stone is shown to its optimal potential. 

Our skilled designers combine traditional values with modern techniques to craft bespoke engagement rings and meaningful jewellery that will be cherised through generations.

Signature Collection
Setting a blue diamond fade 2

Technical detailing

Passionate about technical detail

Built upon the foundations of a life-long passion for gemstones our focus is ensuring every stone is shown in its best light.

Based in our central London workshop and with a specialist at each stage of the process our team of expert jewelers and gemologists are obsessed with detail in a quest of technical perfection.

Our process

Limited edition

Personal & limited edition creations

Each piece of jewellery we create is a personal or limited edition in nature. Discover our portfolio unique pieces and bespoke jewellery in London to find the one-of-a-kind creation that captures or tells your own personal story.

All jewellery
Bridal Collection
Blackacre Office Final

By appointment

Arrange a visit

We operate by appointment only so that we can ensure we give each consultation our undivided attention. Investing time in education can't be done quickly. Let us know your initial ideas and we will help guide you from there.

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Education defines our clients experience

Tsavorite and diamond engagement ring


Creating a modern Heirloom: The journey of a bespoke diamond ring

Creating modern heirlooms is as much about the journey as it is the finished piece. Beyond the rarity and meticulous...

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Sam Stirrat gemologist in Sri Lanka


Sri Lanka | January 2022: Background to our expedition

In January 2022 we traveled to Sri Lanka, the first of many expeditions, taking you on a journey of discovery in search...

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Sulphur porter


Hugh Brown - The Story of a Mine Photographer

There is not much that Hugh Brown hasn't seen or done when it comes to artisanal mining. Providing a voice and sharing...

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Book an appointment

Our central London studio & workshop is open Monday to Friday 9:00am to 17:30pm available by appointment and is located just a short walk from Chancery Lane tube or Farringdon station.

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