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Journal Studio

Every stone is one of a kind: from raw stone to finished necklace

How a stone from Brazil, Pakistan or Sri Lanka becomes a necklace: selection, evaluation according to the Lumière factor, three types of setting and the final touch in the studio.

Every stone is one of a kind: from raw stone to finished necklace

Atelier · Handwerk

Every stone is one of a kind: from raw stone to finished necklace

No two stones are alike, so every stone is one of a kind. That is why each necklace looks a little different from the next, and that is exactly what makes it yours. This is not a sales line. It simply follows from how a necklace is made here. Here is the path from raw stone to finished piece, in four steps.

It does not start with the necklace. It starts with the stone. The 37 stones of the Signature collection come from nine countries, most of them from Brazil, along with Pakistan, Madagascar, India, Mozambique, Zambia, the Congo, Sri Lanka and China. Every product page states where a stone comes from and whether it has been treated.

What sets our necklaces apart from mass-produced jewelry is the order of things. We do not design a setting first and then fill it with a matching stone. The stone comes first, and the setting follows its shape. With a raw stone, that is meant quite literally.

The collection in numbers

Necklaces37Signature
Stone types16from amethyst to turquoise
Countries9Origin

Each of the 37 necklaces comes in 925 sterling silver or 14K gold-filled, on a 45 cm (17.7 in) or 40 cm (15.7 in) chain, or as a pendant on its own. The number of necklaces changes whenever a stone sells out and a new one comes in.

“I don’t look for a stone to fit a setting. I look for a setting to fit the stone.”

From the studio notebook · April 2026

I. Every stone is one of a kind: that is why it comes first.

Eighteen of the 37 stones are from Brazil, the land of quartz: amethyst, citrine, rose quartz, smoky quartz, rock crystal and black tourmaline all come from there. Pakistan supplies the peridot and most of the aquamarines, Madagascar the labradorite, India the carnelian and garnet, Zambia and Brazil the emerald, Mozambique the ruby, the Congo the malachite, China the turquoise and Sri Lanka the moonstone. We choose by stone, not by country: by color, clarity and surface.

Treatments are never hidden. The raw stones keep the shape they grew in, just as they came out of the ground. The moonstone, for example, is completely untreated. The cut teardrops and cylinders are usually treated, as is standard in the trade: emerald is oiled, which fills fine cracks, aquamarine and citrine are heat-treated, turquoise is stabilized and smoky quartz is color-treated. The product page lists this for every stone.

II. The Lumière Factor: four criteria, one hundred points.

Before a stone is set, it gets a rating. There are four criteria worth 25 points each. Transparency: how clearly light passes through the stone. Color depth: whether the color looks flat or vivid. Surface integrity: whether edges and faces are intact. Liveliness: whether the stone sparkles as it moves in daylight or stays quiet.

The total gives the Lumière Factor, from 0 to 100. Up to 60 is Basic, 61 to 75 is Good, 76 to 89 is Very good, and 90 and above is Exceptional. The rating is shown openly on the product page of every necklace, with one sentence on each criterion. A raw stone loses no surface points for its fracture faces as long as they formed naturally and are not chipped.

The rating is not a sales pitch. It is a filter: a stone that does not pass under the lamp does not get set.

How the rating works

Four bars, four criteria. The total falls into one of four levels. A stone with 89 points is “Very good,” one with 90 is “Exceptional,” and the line sits where a criterion leaves hardly anything to be desired.

III. Raw, teardrop, cylinder: three ways to set a stone.

Three shapes, one necklace

10

Raw

Natural shape, wrapped in wire by hand

13

Teardrop

Polished, drilled at the top, hangs freely from the chain

14

Cylinder

Cut, drilled crosswise, sits right on the chain

How the 37 necklaces in the Signature collection are split. Not every stone comes in every shape: the moonstone is only available raw, the turquoise only as a teardrop.

Ten necklaces carry a raw stone. It stays the way it grew, with its edges and faces, and is wrapped in wire by hand at the top. The wire follows the shape, which is why every setting is different. The moonstone, the amethyst, the labradorite, the rose quartz: they all come this way.

Thirteen necklaces carry a teardrop. The stone is polished smooth and drilled at the top, so it hangs freely from the chain and catches the light across its whole surface. Fourteen necklaces carry a cylinder: cut with crisp edges and drilled crosswise, so it sits right on the chain, with no bail and no extra setting.

What the three shapes have in common: the chain is the same, fine and with square links, in 925 sterling silver or 14K gold-filled, 45 cm or 40 cm long. Every stone is also available without a chain, as a pendant for a chain you already have.

IV. The collection in numbers.

Origin of the 37 stones

Brazil18 stones
Pakistan5 stones
Madagascar · India3 stones each
Mozambique · Zambia · Congo2 stones each
Sri Lanka · China1 stone each
Number of stones37 stones

From raw stone to necklace

1

Selection

Stone by stone under the lamp: color, clarity, surface

2

Rating

Lumière Factor, four criteria, one hundred points

3

Setting

Wire wrapped, teardrop drilled or cylinder threaded on

4

Chain

Silver or gold, 45 cm or 40 cm, clasp attached by hand

Why it matters in the studio

Four things that define every necklace we make.

01

The stone first.

We choose the stone, not the setting. The setting follows its shape, which is why no two are alike.

02

Origin and treatment, disclosed.

Every necklace lists the country its stone comes from and whether it is untreated or has been oiled, heated or stabilized.

03

A rating, not a claim.

The Lumière Factor gives every stone four numbers and a sentence to go with them. You can see why a stone was set.

04

Handmade in Germany.

Every setting and every clasp is attached by hand in the studio. No assembly line, no mass production.

A necklace does not become unique through its price but through a stone that grew this way only once. Everything else, the wire, the chain, the clasp, is craft. The stone is the one thing we cannot make. We can only find it.

We don’t design necklaces. We find stones and give them one.

Carola

All 37 necklaces with origin, treatment and Lumière Factor.

View Signature

More stories.

From the journal

Frequently asked questions

What people often ask.

Questions about the origin, treatment and grading of the stones and the three types of setting.

What makes a necklace one of a kind?
The stone. It is chosen first, and the setting follows its shape. With raw stones, the wire is wrapped around the natural shape, which is why no two settings are alike. The chain, clasp and setting are made by hand in our studio in Germany.
Where do the stones come from?
From nine countries, most of them from Brazil. Each product page states where the stone comes from and whether it has been treated.
What is the Lumière factor?
It is our rating for every stone, based on four criteria worth 25 points each: transparency, depth of color, surface integrity and vibrancy. Up to 60 is Basic, 61 to 75 Good, 76 to 89 Very good and 90 or more Exceptional. The rating is shown with every necklace.
Are the stones treated?
We state it openly for every stone: the raw stones are untreated, while the polished teardrops and cylinders are usually treated, for example oiled emerald, heat-treated aquamarine and stabilized turquoise. Each product page says what applies to that stone.
What is the difference between raw, teardrop and cylinder?
Raw: the stone stays the way it grew and is wrapped in wire. Teardrop: polished, drilled at the top, hangs freely. Cylinder: cut, drilled crosswise, sits directly on the chain. The chain itself is the same for all three.

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