Meet Trine

Trine Lamm wearing handcrafted diamond and eternity rings by By Lamm, styled over a classic knit sweater

Meet Trine

Trine Lamm is the founder and designer behind ByLamm Diamonds. A GIA-certified gemologist based in Copenhagen, Trine brings years of experience in diamonds, gemstones, and bespoke design—offering a personalised approach to fine jewellery.

Trine Lamm, GIA-certified gemologist and founder of By Lamm, wearing a dark blouse and a warm smile
Trine Lamm, GIA-certified gemologist and founder of By Lamm, wearing a dark blouse and a warm smile
Trine Lamm, GIA-certified gemologist and founder of By Lamm, wearing a dark blouse and a warm smile

A background in fine jewellery

A background in fine jewellery

Trine is a GIA-certified gemologist with a background in diamond sourcing, gemstone selection, and high jewellery design. Before founding By Lamm, she worked with some of the world’s most exceptional stones. Her training and experience come through in every piece.


“Jewellery should feel like it belongs to you from the start. That’s always been the idea behind By Lamm.”


Whether you’re designing something bespoke or updating a piece you already own, Trine brings together knowledge, intuition, and an instinct for timeless design.


Trine Lamm

GIA Graduate & Founder,
ByLamm Diamonds 

Trine is a GIA-certified gemologist with a background in diamond sourcing, gemstone selection, and high jewellery design. Before founding By Lamm, she worked with some of the world’s most exceptional stones. Her training and experience come through in every piece.


“Jewellery should feel like it belongs to you from the start. That’s always been the idea behind By Lamm.”


Whether you’re designing something bespoke or updating a piece you already own, Trine brings together knowledge, intuition, and an instinct for timeless design.


Trine Lamm

GIA Graduate & Founder, ByLamm 

Trine Lamm examining a diamond through a jeweller’s loupe – a reflection of her expertise and attention to detail
Trine Lamm examining a diamond through a jeweller’s loupe – a reflection of her expertise and attention to detail

Design with intention, created with care

Design with intention, created with care

Trine Lamm designs jewellery that reflects personal moments— elegant pieces, made to last. Her approach balances a strong eye for proportion with a deep respect for material and craft.


Each commission is a collaboration. Trine guides the process from the initial idea through to the final design—helping clients define what they want to create, and shaping it with confidence and precision.

Trine Lamm designs jewellery that reflects personal moments— elegant pieces, made to last. Her approach balances a strong eye for proportion with a deep respect for material and craft.


Each commission is a collaboration. Trine guides the process from the initial idea through to the final design—helping clients define what they want to create, and shaping it with confidence and precision.

Sketches, tools, and jewellery boxes on Trine Lamm’s worktable, illustrating the creative design process behind By Lamm pieces
Sketches, tools, and jewellery boxes on Trine Lamm’s worktable, illustrating the creative design process behind By Lamm pieces

At the heart of By Lamm is connection.

At the heart of By Lamm is connection.

Trine’s expertise allows her to source the finest materials while offering unmatched craftsmanship and value. But beyond the stones and settings, it’s the connection with clients that matters most—turning ideas into something tangible, sentimental, and truly one-of-a-kind.

Trine’s expertise allows her to source the finest materials while offering unmatched craftsmanship and value. But beyond the stones and settings, it’s the connection with clients that matters most—turning ideas into something tangible, sentimental, and truly one-of-a-kind.

At ByLamm Diamonds, bespoke means more than custom—it means creating pieces with intention, quality, and timeless beauty, designed to be passed down for generations to come.

A hand gently pouring loose diamonds or gemstones onto a white surface, symbolising the start of the bespoke jewellery process at By Lamm

Discover the wonderful world of bespoke

Write to us or book an appointment with our team to explore the possibilities of bespoke.

A hand gently pouring loose diamonds or gemstones onto a white surface, symbolising the start of the bespoke jewellery process at By Lamm

Discover the wonderful world of bespoke

Write to us or book an appointment with our team to explore the possibilities of bespoke.

A hand gently pouring loose diamonds or gemstones onto a white surface, symbolising the start of the bespoke jewellery process at By Lamm

Discover the wonderful world of bespoke

Write to us or book an appointment with our team to explore the possibilities of bespoke.

A hand gently pouring loose diamonds or gemstones onto a white surface, symbolising the start of the bespoke jewellery process at By Lamm

Discover the wonderful world of bespoke

Write to us or book an appointment with our team to explore the possibilities of bespoke.

Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

Sign up for insider access to curated edits, newsletter, and more

Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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