Blockchain diamond certification, like Evercarat, enhances transparency by tracing a diamond’s journey from mine to market, reducing fraud and unethical sourcing. However, lab bribery risks persist. Corrupt lab personnel could manipulate grading or certification data before it’s recorded on the blockchain, inflating diamond value or hiding flaws. Evercarat’s reliance on GIA double-verification mitigates this, but human intervention in labs remains a vulnerability. Bribes could compromise initial data integrity, undermining blockchain’s immutability. To counter this, stricter lab oversight, automated grading technologies, and decentralized verification processes are essential. While blockchain strengthens trust, it’s not immune to human corruption. Evercarat must enforce robust anti-bribery measures and independent audits to ensure certification credibility and protect investors from manipulated data.