11 of our pearl necklaces are sold with a gem-testing identification report from an independent lab. The product page shows the lab, the report number and every reading exactly as printed on the card (for example, Classic White Pearl Strand).
What each line means
- Report No. / Lot No.
- The unique reference for the test. Quote it to the lab to check the report is genuine.
- Identification
- What the lab identified the material as — for example “Freshwater cultured pearl”.
- Colour and shape & cut
- As observed by the lab, e.g. “White”, “Round beads”.
- Refractive index (RI)
- How much the material bends light. Labs use it to separate pearls and gems from glass and plastic imitations.
- Optic character
- S.R. = singly refractive, D.R. = doubly refractive, AGG = aggregate. Another reading that helps confirm identity.
- Hardness / specific gravity
- Physical properties measured or referenced by the lab.
- Weight
- The weight tested — for a necklace this usually includes the whole strand.
- Remarks
- Anything else the lab wants to note, e.g. “Freshwater”.
What a report does and doesn't tell you
An identification report confirms what the material is. It is not a valuation and does not grade quality. Readings are transcribed exactly as printed; the original card ships with your order.
How to verify
- Scan the QR code on the card if there is one, or
- contact the lab and quote the report number, and
- compare the readings with the product page.
Want to see the card before buying? Ask us on WhatsApp for a live photo.