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Learn · Lesson 36

Treatments, Simulants, and Screening

HOK-DIA-LESSON-00036Time-sensitive

Learning Objectives

Core

A treatment can alter color, clarity, or appearance. Treatment status is not a minor footnote: it can affect product identity, disclosure, care, service, documentation, and market comparison.

A simulant is not diamond material. A laboratory-grown diamond is diamond with a different growth origin. A treated natural diamond is natural diamond whose properties have been altered. These are three different categories of problem.

A handheld tester that separates some materials may not resolve origin or treatment. Screening begins by defining the question the method is supposed to answer.

Apply

Buyer’s Guide 08 — Treatments and Disclosure

Red flags

Purchase checklist

Fracture filling and coating require particular caution because service/report eligibility and care can differ from an untreated stone. Do not generalize all treatment cases into one disclosure or service rule.

Buyer’s Guide 09 — Simulants, Screening, and Digital Fraud

Red flags

Purchase checklist

For screening terminology, keep two concepts separate. OUT-OF-RANGE is a device-result label where defined by that device. OUT OF SCOPE describes a validation/applicability boundary and is not the same result. A REFER or OUT-OF-RANGE result follows the device’s defined escalation pathway; an OUT OF SCOPE case requires a method validated for that use case.

Check Your Understanding

Conclusion Boundary

Stop or escalate when treatment status is unclear, disclosure is inconsistent, service safety is uncertain, or the selected identification/screening method cannot answer the actual question. Treat REFER and OUT-OF-RANGE according to the device workflow; treat OUT OF SCOPE as a validation boundary requiring a different appropriately validated method. Digital records never replace physical matching.

Common Mistakes

“Permanent treatment means service is always routine.”
No.

“Laboratory-grown is a simulant.”
No.

“A diamond-tester pass proves natural origin.”
No.

“OUT-OF-RANGE and OUT OF SCOPE are synonyms.”
No.

Remember

First classify the problem: treatment + material + origin + device scope + document authenticity + physical match are separate decision layers.

Sources

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