The South Sea PearlOpen jewellery tools

Safe observation checklist

Check the signals. Protect the pearl.

Work through visible, non-destructive clues and learn when a jeweller or gem laboratory is the only reliable next step.

3 min to useFree foreverNo account needed
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Non-destructive checklist

0 of 6 observed

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1Surface under magnification

Minute growth features or subtle irregularity, rather than a perfectly smooth painted skin.

2Depth of lustre

Reflections seem to glow through the surface instead of sitting flat like gloss paint.

3Drill-hole edges

Edges look clean or nacreous, without flaking coating or an obvious glass/plastic core.

4Natural variation

In a pair or strand, the pearls are well matched but not mechanically identical.

5Initial temperature

They feel cool at first and gradually warm in the hand. This is only a weak clue.

6Trustworthy documentation

A reputable seller’s document or laboratory report identifies the material as cultured pearl.

Current patternNot enough observations yet

Complete at least three checks before interpreting the pattern.

Keep the pearl safe.Do not burn, scrape, soak in chemicals or use an acid test. These can permanently damage nacre.
Built to answerhow to tell if pearls are real · real pearl testNo scraping, burning or damaging folklore.

Transparent by design

A useful answer, with its limits left visible.

01

Inputs you can inspect

Every output changes in response to visible controls. No hidden “AI score” and no email gate.

03

Decision, not diagnosis

The result helps you ask better questions. It does not replace a physical inspection, laboratory report or final fit check.

For editors, educators & jewellers

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Plain-language answers

Questions this tool should settle.

Can an online test prove that a pearl is natural?

No. Separating natural, cultured, treated and imitation pearls can require radiography and advanced laboratory testing. This checklist only organises observable signals.

Should I rub a pearl against my teeth?

We do not recommend it. It is unhygienic, subjective and not conclusive. Use magnification, careful visual inspection and professional testing instead.

Are perfectly round pearls fake?

No. Fine cultured pearls can be beautifully round and well matched. Extreme uniformity is only one clue and must never be used alone.

From learning to choosing

See these ideas in real pearls.

Explore pieces selected by pearl type, colour and size at The South Sea Pearl.

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