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Dual CertificationNGTC + Blockchain
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Two independent proofs travel with your jewelry: an authoritative appraisal and an immutable traceability record.

Dual Certification

NGTC appraisal certificate

Issued by an NGTC-authorised gemological laboratory, stating material, treatment status and grade. Shipped together with your order.

Blockchain e-certificate

Every step — rough selection, cutting, setting, QC, dispatch — is written to a blockchain record. Scan the code on your certificate card to see it.

Lost your card?

Contact support with your order number and we will reissue the digital certificate at no charge.

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Dual Certification | DASHENG Jewelry