KaratGuide

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What Is Green Gold?

The rarest gold color — made by mixing gold with silver (and sometimes cadmium). Here's the full story.

Volume visualization — gold vs. silver

Each droplet = same volume. Silver (10.5 g/cm³) is lighter than gold (19.3 g/cm³), so silver needs significantly more droplets for the same weight.

18K Green Gold | 75.0 wt%

18K Green Gold

14K Green Gold | 58.3 wt%

14K Green Gold

10K Green Gold | 41.7 wt%

10K Green Gold

Pure gold (Au)
Silver (Ag) — by volume

The green gold recipe

More silver = greener and paler. Cadmium intensifies the green but is rarely used due to toxicity.

Au
Gold
Yellow Gold
+
Ag
Silver
Silver The source of the green hue
+
Cd
Cadmium
rare
Cadmium Intensifies green (toxic)
=
GREEN
GOLD
✦ 18K
Green Gold!

How silver % changes the color

24K
0% Ag
22K
~8% Ag
18K
~25% Ag
14K
~40% Ag
10K
~58% Ag
Electrum
~50% Ag
← Deep yellow (no silver) Olive green / pale electrum →

Common green gold types

18K Green Gold
Hallmark: 750
Gold (Au)75%
Silver (Ag)25%

The most common green gold in fine jewelry. Subtle olive-yellow hue. Used in multi-tone pieces alongside yellow, white, and rose gold.

Best for: Multi-tone rings, artistic jewelry

14K Green Gold
Hallmark: 585
Gold (Au)58.3%
Silver (Ag)41.7%

Greener and more affordable than 18K. The silver content gives a noticeably cooler, more olive appearance.

Best for: Decorative accents, nature-inspired jewelry

Electrum (ancient)
Hallmark: —
Gold (Au)50%
Silver (Ag)50%

The ancient natural alloy of gold and silver. Used in coins and artifacts from ancient Greece and Egypt. Pale greenish-gold in appearance.

Best for: Historical coins, museum pieces

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What makes it green?

Silver absorbs more blue and red light than gold does. When mixed with gold, it shifts the alloy's color toward green-yellow. The more silver, the greener the result.

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Ancient history

Electrum — a natural alloy of gold and silver — was used in ancient coinage as far back as 600 BC in Lydia (modern Turkey). It's one of the oldest known monetary metals.

⚠️

Cadmium caution

Some older formulas used cadmium to intensify the green color. Cadmium is highly toxic and is now banned from jewelry in many countries, including the EU.

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Where you'll see it

Green gold is rare in everyday jewelry but popular in high-end multi-tone pieces — rings or pendants that combine yellow, white, rose, and green gold for a nature-inspired look.

All gold colors side by side

Yellow Gold
Gold + silver + copper
Rose Gold
Gold + copper (+ silver)
White Gold
Gold + palladium/nickel + rhodium
Green Gold
Gold + silver (+ cadmium)

Green Gold vs. Electrum

Property
Green Gold (18K)
Electrum (natural)
Gold content
75% (18K)
~50–80% (varies)
Silver content
~25%
~20–50%
Color
Olive-yellow green
Pale yellow-green
Origin
Man-made alloy
Occurs naturally in rivers
Historical use
Modern fine jewelry
Ancient coins (600 BC+)
Availability
Made to order
Extremely rare today
Cadmium
Rarely (often none)
Never (natural)
Best for
Multi-tone jewelry
Historical reproduction

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