A stone is found. A metal is chosen. But why these two, of all metals? Why has humanity, in almost every culture, arrived at the same answer: gold and silver?
The answer doesn't lie in symbolism. It lies in the atom. Both elements sit in the same column of the periodic table: group 11, the coinage metals. They share one special trait: a single electron in the outermost shell, which gives them softness, shine and an almost indecent staying power.
When Carola picks up a piece of sterling silver in the morning, she isn't holding a material. She is holding a promise that nature made 4.5 billion years ago, when the Earth was formed. Silver atoms born in stars and stellar explosions, followed by billions of years of geology, before they become your necklace in a studio in Germany.
Periodic Table · Group 11
Gold, silver and copper share one column: the coinage metals. A single electron in the outermost shell makes them soft, malleable and excellent conductors. Exactly what a workbench needs.
“Jewelry is the only kind of object where astronomy, chemistry and love meet within a single square centimeter.”
I. Two atoms, one family trait.
Gold has 79 protons, silver has 47. Both have a single s electron in the outermost shell. That is why they can be bent, drawn and hammered without breaking. A single gram of gold can be drawn into a wire more than two kilometers (over 1.2 miles) long. A gram of gold can also be beaten into a leaf so thin that light shines through it.
This malleability is one reason gold and silver have been worn as jewelry for more than 6,000 years. Both can be shaped even with simple tools. The history of jewelry is, to a large extent, the history of these two elements.
II. Why gold is golden (and silver isn't).
The color of a metal doesn't come from a pigment. It comes from the speed at which its electrons respond to light. In silver, the electrons respond evenly to all wavelengths, so the entire visible spectrum is reflected. The result: a cool white.
In gold, something fascinating happens: because its inner electrons move at around 60 percent of the speed of light, Einstein's theory of relativity comes into play. They become “heavier” and absorb blue light, and what is reflected back has the warm honey tone we call gold.
Gold is one of the very few metals whose color can only be explained by Einstein's theory of relativity.
Reflection in the visible spectrum (schematic)
Silver reflects almost all visible light evenly, which is why it looks cool and white. Gold absorbs blue and mainly reflects red and yellow, which gives it its warm tone.
III. Why silver tarnishes, and why that's beautiful.
Why silver tarnishes and gold doesn't
Silver reacts with hydrogen sulfide (H₂S) in the air to form silver sulfide (Ag₂S), the dark layer we call “tarnish.” Gold is more noble: its electrons are held so tightly that sulfur can't pull them out of the bond. That's why gold stays golden.
We often talk about tarnish as if it were a flaw. It's the opposite. It's proof that your jewelry is in conversation with the world: with the air in your living room, with the salt on your skin, with every summer evening by the sea.
925 sterling silver, meaning 92.5% silver and 7.5% copper, is Carola's standard, because fine silver would be too soft for a necklace that's meant to last a lifetime. The copper makes it tough enough for everyday wear, and the patina that develops is yours alone.
Gold doesn't tarnish. It doesn't corrode, because its electrons are bound too tightly. Sulfur, oxygen, salt water: it all bounces off. That's why the oldest surviving gold objects date back to 4500 BC and still look as if they were made yesterday.
IV. Numbers you won't find on any label.
Properties compared
Purity · Silver alloys
999
Fine silver
99.9%
Too soft for chains
925
Sterling
92.5%
Carola's standard
835
835 silver
83.5%
More copper, tarnishes faster
Why it matters in the studio
Four promises we draw from chemistry.
01
925 sterling silver, never less.
92.5% purity, the sweet spot between shine and everyday wear. There is also 835 and 800 silver, which contains more copper. We only work with 925 sterling silver.
02
14K gold-filled instead of gold plating.
Our gold necklaces carry a rolled-on layer of 585 gold that keeps its color for years. Our Journal explains how this differs from gold plating.
03
Set by hand in Germany.
No assembly line, no mass production. Every necklace passes through Carola's hands, from the stone to the clasp.
04
Water-resistant in everyday life.
925 sterling silver and 14K gold-filled can handle showers, rain and the ocean. Give them a quick rinse after salt water or chlorine, and that's all they need.
The next time you pick up one of our necklaces, think about this: you're holding an atom that was born in the fire of long-gone stars, spent four billion years locked in stone, lay on a workbench for a while and is now warming against your skin.
This isn't jewelry. It's cosmology you can wear.
Carola
All necklaces are available in 925 sterling silver and 14K gold-filled.
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