Diamonds are one of the biggest purchases most people make – but certificates are often forged.

Everledger is putting paid to those fears as the first company to track diamonds throughout the supply chain using blockchain technology.

By giving them a digital thumbprint it ensures they are authentic and ethically traded.

See them in our 101 rising stars of tech here. For more trend-setting businesses and their Tech 1sts, head here.

And check out our leading 101 tech start-up disrupters here.