Is 750 gold the same as 18K gold?

Yes, 750 and 18K are identical in gold purity — both describe a metal that is 75% pure gold. The difference is only the notation system. 750 uses the millesimal fineness scale (parts per 1,000), while 18K uses the karat scale (parts per 24). You'll find 750 on jewelry made or sold in Europe, Japan, and many other international markets, while 18K is the standard American marking.

Is 750 gold good quality?

750 gold is considered high-quality fine gold jewelry. At 75% purity, it has a richer, more saturated gold color than 14K (58.5%) or 10K (41.7%) gold. It's also more resistant to tarnish and skin reactions than lower-karat alloys.

What is the difference between 750 and 585 gold?

750 gold is 18-karat (75% pure gold), while 585 gold is 14-karat (58.5% pure gold). The 750 piece contains more actual gold, which makes it more expensive per gram and typically gives it a deeper yellow color.

Does a 750 stamp mean the piece is solid gold?

A 750 stamp on its own means the metal body is solid 18-karat gold throughout. However, if you see 750 paired with 925 or SS, the piece is sterling silver with an 18K gold plating layer — not solid gold.

Can 750 gold tarnish or turn your skin green?

Pure 750 solid gold is very resistant to tarnish and almost never turns skin green. At 18K, the copper content is low enough that this reaction is extremely rare.

What does 750 mean on a white gold ring?

A 750 stamp on a white gold ring means the ring is 18-karat white gold — an alloy of 75% pure gold mixed with white metals like palladium, nickel, or silver. The 750 stamp confirms the gold purity of the base alloy underneath the rhodium plating.

How can I tell if a 750 stamp is genuine?

A genuine 750 stamp is usually small, precise, and pressed into the metal. The safest verification methods are an XRF test at a jeweler or an acid test using 18K gold testing acid.

What does 750 mean on a gold chain?

On a gold chain, a 750 stamp means the chain itself is made from 18-karat gold alloy. The stamp confirms that 75% of the metal weight is pure gold.

What Does 750 Mean on Jewelry? (= 18K Gold) Hallmark Explained (2026)

Q: Is 750 gold worth buying?

750 gold is worth buying if you want a piece with high intrinsic gold value and rich color. For investment purposes or heirloom pieces, 750 holds its value well.

📖 More Jewelry Hallmark Guides

TL;DR

750 = 18K gold. It means the metal is 75% pure gold — the same purity as 18-karat, just written in the millesimal fineness system used internationally. A 750 stamp is a quality mark, not a mystery.

You found a stamp that reads "750" on a ring, chain, or bracelet and you're not sure what it means. Here's the short answer: 750 is the international hallmark for 18-karat gold. It tells you the metal contains 750 parts per 1,000 pure gold — exactly 75%.

This guide explains what 750 means, how it compares to other gold hallmarks, what to look for when the stamp appears alongside other marks, and what it means if you see 750 on a gold-plated piece.

What Does 750 Mean on Jewelry?

The number 750 is a millesimal fineness mark — a stamping system that expresses metal purity as parts per 1,000. A 750 stamp means 750 out of 1,000 parts are pure gold, which is 75% gold by weight.

In the karat system used in the United States, 75% gold is called 18-karat gold (18K). The two marks are completely interchangeable — 750 and 18K describe exactly the same alloy. The difference is only which system the country of manufacture uses:

Stamp	System	Used In	Gold Purity
750	Millesimal fineness	Europe, Japan, international	75.0%
18K / 18CT	Karat	USA, Canada, UK	75.0%

If you bought a piece in Italy, France, Germany, Switzerland, or Japan and it's stamped 750, you have 18-karat gold. It's that straightforward.

750 vs Other Gold Hallmarks: Purity Comparison

Here's how 750 compares to every other common gold purity stamp:

Stamp	Karat Equivalent	Gold Purity	What It Means
999	24K	99.9%	Pure gold — too soft for most jewelry
916	22K	91.6%	High-purity gold, common in Indian jewelry
750	18K	75.0%	Premium jewelry gold — rich color, durable
585	14K	58.5%	Most popular in the US — balance of purity and hardness
417	10K	41.7%	Minimum legal karat in the US
375	9K	37.5%	Common in UK and Australia

750 sits at the top tier of wearable fine jewelry gold. It is purer than 14K (585) but more durable than 22K or 24K, which are too soft for pieces worn daily.

What Does 750 Look Like on a Piece of Jewelry?

On most pieces, you will find the 750 stamp:

On the inside of a ring band — stamped into the metal, small and precise
On the clasp or jump ring of a necklace or bracelet — often the easiest place to stamp without affecting the design
On the post or back of an earring — sometimes on the butterfly back or the post itself

The stamp is typically laser-engraved or die-struck. It appears in a small rectangle, oval, or freeform punch. On European pieces, you may also see a maker's mark (a symbol or initials in a separate punch) alongside the 750 purity mark — this identifies the manufacturer or assay office.

What If You See 750 and 925 Together?

A piece stamped with both 750 and 925 is gold-plated sterling silver — not solid 18K gold.

Here's what each mark tells you:

925 = the base metal is sterling silver (92.5% pure silver)
750 = the plating layer is 18-karat gold

This is sometimes written as "750/925" or "18K/925" and indicates a high-quality plated piece: the plating itself is genuine 18K gold, applied over a genuine sterling silver base. This is a better-quality plated piece than GP (gold plated over brass) or GEP (gold electroplated), because both the base and the plating are precious metals.

AJLuxe jewelry uses this construction: 925 sterling silver base with 18K gold plating. When you see both marks together, you're looking at quality-layered jewelry, not counterfeit solid gold.

How to Tell If a 750 Stamp Is Genuine

Counterfeit gold stamps do exist, particularly on low-cost imported pieces. The most reliable verification methods:

XRF testing — a non-destructive test a jeweler can run in seconds; a machine reads the exact metal composition through the surface
Acid testing — 18K gold testing acid applied to a scratch from the piece; a genuine 750 piece won't dissolve
Hallmarking authority — pieces sold in the UK have a government assay office mark alongside the purity stamp, which is an additional authenticity signal

If a piece is sold as solid 750 gold and priced at under $50, treat it with skepticism. Genuine 18K gold is a precious commodity — the gold content alone in a 5-gram chain at 18K costs around $250 at current gold prices.

Is 750 Gold Worth Buying?

750 gold is considered premium fine jewelry gold. At 75% purity it has a richer, more saturated yellow color than 14K (58.5%) or 10K (41.7%) gold, is more resistant to tarnish, and causes fewer skin reactions. For fine jewelry pieces meant to last decades — engagement rings, heirloom pieces, investment jewelry — 750 is an excellent choice.

For everyday wear, 14K (585) is often preferred because the lower gold content makes the alloy harder and more scratch-resistant. A 750 ring worn daily will show surface scratches faster than a 585 ring, though the gold content is higher.

750 Gold Plated vs 750 Solid Gold

	750 Solid Gold	750/925 Gold Plated
Base metal	18K gold throughout	925 sterling silver
Plating	None — solid	18K gold layer on surface
Durability	Lasts lifetime with care	2–5 years before replating
Price	$300–$2,000+ for simple pieces	$25–$80 for equivalent designs
Best for	Heirlooms, engagements, investment	Everyday wear, gifts, fashion

Final Thoughts

The 750 hallmark is one of the clearest quality signals you'll find on a piece of fine jewelry. It tells you immediately that the piece contains 75% pure gold — the same as 18-karat gold, just written in the language of the international millesimal fineness system.

Whether you're shopping for a gift, evaluating an inherited piece, or just want to understand what you already own, knowing how to read 750 puts you ahead of most buyers. It's not a mystery mark — it's a precise, verified purity statement stamped directly into the metal.

If the piece you're looking at has 750 alongside a 925 mark, you have gold-plated sterling silver, which is still a beautiful and quality choice — just a different product. Solid 750 pieces with no silver purity stamp are the real deal: genuine 18K gold.

Keep this guide bookmarked the next time you're evaluating a stamp on any piece of gold jewelry. And if you're shopping for 18K gold-plated sterling silver jewelry that combines the look of 750 gold with the value of 925 silver, explore our collection at AJLuxe.

Written by Vaishakhi Ajmera, founder of AJLuxe. Last updated: June 2026.