Get the customized diamonds, gemstones and jewelry of your dreams

I’ll help you select and create the jewelry of your lifetime


Get my best advice for investing in diamonds

Custom-made jewelry

Find more about custom-made jewelry ByLamm

The value of diamonds

Se how the value of a diamond is determined

Gemstones grading

Learn more about how gemstones are graded

The classic design

Enjoy timeless classics from the classic design collection

Let me help you find the diamonds
that you’ve always dreamt of.​

Whether you’re interested in custom-made jewelry, classic design or investing in diamonds, I’ll help you all the way. Want a unique piece of jewelry? A custom-made stone perfectly tailored to you? Ready to invest in diamonds? Or are you curious to learn more about diamonds, grading, cuts, colors, etc? Take a look around my website, and I’m sure you’ll find what you’re looking for.

Who’s ByLamm?

Hi, my name is Trine Lamm, and I run ByLamm Diamonds.
It would be an understatement to say that I’m passionate about diamonds, pearls, gemstones and jewelry. I absolutely live for it!

For most of my life, I’ve studied diamonds and gemstones.
I studied gemology at the Gemological Institute of America (GIA) and valuation at the National Association of Goldsmiths in London. I’ve worked with diamond dealers in Antwerp’s diamond district. I’ve spent countless hours studying rough diamonds and jewelry design…