How to Tell Real Amber from Fake - A Complete Test Guide
The fastest way to spot real amber: drop it in salt water (one part salt, two parts water). Genuine amber floats; most fakes sink. That single test catches the vast majority of plastic and glass imitations in under a minute. The full guide below walks you through six more checks, when to use each, and how counterfeiters get past them — so you can buy and wear amber with complete confidence.
The 30-Second Test Cheat Sheet
| Test | Real amber | Fake (plastic/copal/glass) | Risk to your piece |
|---|---|---|---|
| Salt water float | Floats | Usually sinks | None |
| Warmth in hand | Warms quickly | Stays cool (glass) | None |
| UV blacklight | Glows blue-green | No glow or wrong colour | None |
| Pine-resin scent | Faint pine when warmed | Plastic smell or none | None (rub between palms) |
| Static charge | Lifts paper after rub | Plastic also lifts paper | None |
| Hot needle | Pine-resin smell | Burning plastic smell | Leaves a tiny mark |
| Acetone wipe | Unaffected | Copal becomes sticky | Low if brief |
The first four tests are non-destructive — start there. Save the hot-needle and acetone tests for last, and only on inconspicuous spots.
1. The Salt-Water Float Test (Easiest, Most Reliable)
Mix one part table salt to two parts warm water (roughly 2 tablespoons salt to a small glass) and stir until fully dissolved. Drop the amber piece in. Genuine Baltic amber has a specific gravity of 1.05–1.10 and floats in saturated salt water; most plastics, glass and resins are denser and sink.
Caveat: if the piece is set in metal, the metal weight will pull real amber under. Test loose stones only, or detach the bead from its setting if possible.
2. Warmth and Touch
Hold the piece against the back of your hand or your cheek. Real amber is a poor conductor of heat — it warms quickly and feels noticeably warm against skin. Glass imitations stay cold for much longer. Plastic falls in between, which is why this test should never stand alone — but it's a useful first impression.
3. UV Blacklight
Under a UV torch (the same kind used to spot counterfeit banknotes — under £10 on Amazon), genuine Baltic amber fluoresces a soft blue or blue-green glow. Most plastic imitations either don't fluoresce at all or glow a very different colour (often dull yellow). Copal — younger, partially-fossilised resin sometimes sold as amber — glows weakly compared to true Baltic amber.
4. The Pine-Resin Scent Test
Rub the amber briskly between your palms for 20–30 seconds until the surface warms slightly. Bring it close to your nose. Real amber gives off a faint, sweet pine-resin scent — a remnant of the tree resin it formed from 40–50 million years ago. Plastics smell like nothing or release a faint chemical odour. This is one of the most enjoyable tests because the smell itself is part of amber's charm.
5. The Static-Charge Test
Briskly rub the amber on a piece of natural cloth (silk or wool work best) for 20 seconds, then hold it just above small torn pieces of tissue paper. Real amber builds a static charge and lifts the paper. Some plastics also do this, so use the test alongside others, not on its own. Worth knowing: our word electricity actually traces back to elektron, the ancient Greek for amber — this is the very phenomenon people first noticed when they rubbed it.
6. The Hot Needle Test (For Confident Owners)
Heat the tip of a fine needle until it glows red, then briefly press it against an inconspicuous spot — the back of a bead, an unseen edge of a pendant, never the visible face. Real amber smells of pine resin; plastic smells acrid like burning hairbrush. The test leaves a tiny mark, so it's a last-resort check, not a routine one. Do not perform this on a piece you can't afford to scuff.
7. The Acetone Wipe (Spotting Copal)
Copal is young tree resin — sometimes only thousands of years old, not millions — that's frequently passed off as amber. To spot it: dab a little acetone (nail polish remover) on a cotton bud and gently rub an unseen part of the piece for 5–10 seconds. With real Baltic amber, the cotton bud comes away clean and the surface stays smooth. Copal, by contrast, turns tacky almost immediately or leaves a sticky residue on the bud. Keep the wipe brief; don't soak the piece.
What Counterfeiters Use to Imitate Amber
- Plastic resins (Bakelite, phenolic): Most common. Looks the part but fails the salt water and scent tests.
- Glass: Heavier, cooler, and won't take a static charge.
- Copal: Real tree resin, just too young to be amber. The acetone test catches this every time.
- "Pressed amber" / ambroid: Genuine amber fragments melted and pressed back together. Technically real amber, but lower quality and usually undisclosed.
- Bernite and other lab-made plastics: Engineered specifically to fool casual buyers. Use UV plus salt water to spot.
The Surest Way: Buy from a Certified Source
Every test above gives you confidence after the fact. The cleanest path is to buy from a seller who has already been vetted. The International Amber Association (IAA) publishes a list of recommended sellers, and Baltic Beauty is proud to be a registered IAA Recommended Seller with authenticity certificates available with every piece.
Read more about the stone itself on our About Baltic Amber page, or browse our amber jewellery collection.
Frequently Asked Questions
Does real amber float in fresh water?
No — only in saturated salt water. Real amber floats in salt water with a specific gravity of around 1.13, but sinks in plain fresh water. The salt is essential.
Are insect inclusions a guarantee of authenticity?
Not on their own. Counterfeiters embed insects in plastic to mimic the look, and the inclusions are often modern species too well-preserved to be 40 million years old. Combine with a salt water and UV test.
Is "pressed amber" fake?
It's a grey area. Pressed amber (ambroid) is real amber that's been melted from small fragments and re-formed. The material is genuine, but the price should reflect that — undisclosed pressed amber sold as solid is misleading.
Can a jeweller test amber for me?
Yes. Reputable jewellers and gemologists have access to infrared spectroscopy and refractive-index testing — both definitive. If you have a high-value heirloom, this is the gold standard.
Will the salt water or hot needle test damage my real amber?
The salt water test is harmless — rinse and dry the piece afterwards. The hot needle leaves a small surface mark, so test only on hidden areas.
Care for Your Real Amber Once You've Confirmed It
Genuine amber is softer than most gemstones — Mohs hardness 2–2.5 — so it scratches more easily than diamond, sapphire or even quartz. See our amber care guide for storage, cleaning and what to avoid.
