100% screened by NIRU Laboratories

Naturality

Formed by the Earth, finished by hand.

NIRU Labs
Bangkok · Sri Lanka · Israel
Verification
100% screened in our internal laboratory
Equipment
Screening Machines Tested by Assure Program

Made by time

Naturality

Formed over billions of years. Crystallized under deep pressure.

How we verify

Naturality Verification.

In NIRU laboratories, certified gemmologists verify each stone using advanced gemmological instruments. What is verified, and how, changes with the material.

Loose round brilliant diamonds spread for selection

Diamond screening

Diamonds

Every diamond NIRU supplies is screened for natural origin in our own laboratory, at the last control point before it leaves us.

Scope
100% of diamonds supplied.
Timing
At the final control point, before packing and dispatch.
Process
Our screening protocol is developed through detailed risk assessment and follows clearly defined control procedures.
Specialist team
Screening is carried out by our in-house laboratory controllers, trained by GGTL.
Equipment
IIDGR AMS2IIDGR AMS MicroGGTL DFIGIA iD100
Secure release
Once cleared, parcels are securely packed, sealed, and released for supply.
Explore Diamonds
Split composition of orange and blue colored stones: faceted round sapphires next to rough sapphire crystals

Gem Assure verification

Colored Stones

Every stone entering NIRU stock goes through Gem Assure, the verification procedure of our own laboratory. It establishes natural origin, species and variety, any treatment, and geographic origin where conditions allow.

Scope
100% of stones, before they enter NIRU inventory.
Timing
On entry, ahead of any work on the stone.
Process
Fundamental gemmological techniques combined with advanced analytical methods, following strict international standards.
Specialist team
Screening is carried out by certified gemmologists in our Bangkok laboratory.
Equipment
UV-Vis-NIRFTIRRamanPhotoluminescence
Outcome
Confidence, consistency, and integrity at every stage of the supply.
Explore Colored Stones
NIRU gemmologist examining a parcel of stones under a stereo microscope in an in-house screening laboratory

Screened in-house

NIRU Laboratories

Three laboratories under NIRU supervision: Bangkok for colored stones, Sri Lanka and Israel for diamonds.

A hand pouring diamonds into a De Beers AMS2 screening instrument in a NIRU laboratory

Verification tools

Screening Equipment

All NIRU screening machines are tested by the Assure Program:

Diamonds

DFI (GGTL), AMS Micro (IIDGR), AMS2 (IIDGR), ID100 (GIA)

Colored Stones

UV-Vis-NIR, FTIR, Raman, Photoluminescence (PL)

Continue exploring
stones.

Diamonds and colored stones.

01 Polished diamonds arranged on a neutral ground Diamonds From melee to fancy shapes, cut in Sri Lanka. 02 Colored gemstones laid in a rainbow gradient Colored Stones Sapphire, ruby and emerald, polished in Bangkok.

One group,
a world of expertise.

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