Comparison · Metals & Alloys
Brass vs Bronze
Brass and Bronze are easy to confuse because both are metals & alloys. Both sit near Mohs 3.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Brass and Bronze
- Both sit near Mohs 3.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Streak color differs: Brass leaves a yellow-gold to brass streak on unglazed porcelain, Bronze leaves brownish gold to coppery.
- Both look metallic, so compare color, tarnish and weight rather than shine.
- They overlap in yellow and brown, but Bronze also comes in green and orange.
Brass vs Bronze properties
| Property | Brass | Bronze |
|---|---|---|
| Type | Metals & Alloys | Metals & Alloys |
| Mohs hardness | 3.5 | 3 |
| Luster | metallic | metallic |
| Streak | Yellow-gold to brass | Brownish gold to coppery |
| Transparency | opaque | opaque |
| Specific gravity | 8.5 | 8.8 |
| Crystal system | varies | varies |
| Common colors | Yellow gold, Brass yellow, Brown, Tarnished gold | Brown, Bronze, Gold, Green patina, Copper brown |
| Rarity | common | common |
| Typical specimen value | $1–$150+ | $1–$300+ |
Which is more valuable?
Bronze is usually the more valuable of the two: a typical collector specimen runs about $25 against $15 for Brass, and premium Bronze can reach $300 or more.
About Brass
Brass is a yellow-gold copper and zinc alloy often used in hardware, decorative objects, instruments, keys, fittings, and jewelry findings.
About Bronze
Bronze is a copper alloy, traditionally with tin, that often appears brown, coppery, golden, or green-patinated on older objects.
Brass vs Bronze FAQ
Is Brass the same as Bronze?
No. Both are metals & alloys, but they are distinct species with different hardness, streak or luster. Both sit near Mohs 3.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Brass from Bronze?
Both sit near Mohs 3.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Streak color differs: Brass leaves a yellow-gold to brass streak on unglazed porcelain, Bronze leaves brownish gold to coppery. Both look metallic, so compare color, tarnish and weight rather than shine.
Which is harder, Brass or Bronze?
Brass is harder: Mohs 3.5 against Mohs 3 for Bronze.
Which is more valuable, Brass or Bronze?
Bronze is usually the more valuable of the two: a typical collector specimen runs about $25 against $15 for Brass, and premium Bronze can reach $300 or more.
