【Toronto, Can】Are You Overpaying for a Lab-Grown Diamond?

Editor’s Note

This article explores the shifting dynamics in the diamond market, where lab-grown alternatives are gaining significant traction due to their substantially lower cost. It highlights a key consumer trend and its impact on the traditional industry.

Two lab-grown diamonds sit side-by-side on black velvet in clear cases.
Marketplace Investigation Reveals Vast Price Differences

Marketed as an alternative to mined diamonds, lab-grown stones are growing in popularity among engaged couples, taking some of the shine from mined or “natural” diamonds, which have traditionally dominated the market. Experts say a lab-grown diamond can cost 90 per cent less than its natural equivalent.

“The tide has shifted. Like, more people are going with … the lab-grown,” said Daniel Ng, a Toronto resident who chose a lab-grown diamond for an engagement ring.

A CBC Marketplace investigation found that virtually identical lab-grown diamonds are being sold at vastly different prices, raising questions about whether some consumers are paying far more than they need to. Journalists purchased two lab-grown diamonds with identical specifications (one carat, D-colour, ideal cut, VS1 clarity, round shape). One, from leading online retailer Blue Nile, cost $1,639.23 CAD. The other, from a vendor on Alibaba.com, cost $228.86.

Image of a lab-grown diamond from Alibaba.com.
Industry Analyst Warns of ‘Credibility Problems’

Paul Zimnisky, a U.S.-based diamond industry analyst, said he has seen such large price gaps and warned they could create “credibility problems” for the industry.

“I think there’s definitely been an incentive for jewellers to sell the lab-grown diamond, because the profit margin potential is much higher,” Zimnisky said. “A stone with the exact same characteristics could be sold at [a] very different price. You could find the same diamond for $150 [US] or for $1,500.”

He explained that lab-grown diamonds are an economy-of-scale business where production costs are falling precipitously, with wholesalers potentially buying stones for as low as $75-$95 USD.

Image of a lab-grown diamond from Blue Nile.
Independent Appraisal Confirms Identical Quality

Both purchased diamonds came with legitimate certificates from the International Gemological Institute (IGI). Accredited jewelry appraisers Eddy and Allan Young of Gem Review Inc. in Toronto examined both stones under a microscope.

“Identical,” said appraiser Eddy Young. “No difference.”

He gave both diamonds the same estimated retail value: $1,925 CAD. He was unsurprised by the purchase price variance, noting the Alibaba price reflects buying directly from a manufacturer, a price typically unavailable from local jewelers.

Olivia Chan shows the camera her the lab-grown diamond engagement ring, alongside fiancé Daniel Ng.
Full article: View original |
⏰ Published on: January 16, 2026