GIA to Introduce Cut Grades for Oval, Marquise, and Pear Diamonds in 2027
GIA has announced the introduction of cut grades for oval, marquise, and pear-shaped diamonds beginning in 2027, addressing a long-standing grading gap that has left fancy shape quality assessment without a standardized industry benchmark.
Read original on RapaportExecutive Summary
GIA will begin assigning cut grades to three major fancy diamond shapes starting in 2027, closing a decades-long gap in grading standardization for non-round stones. The change will materially affect how fancy shape diamonds are valued, priced, and communicated across the supply chain.
Industry Impact
The absence of standardized cut grades for fancy shapes has created a long-standing pricing inefficiency: well-cut and poorly cut ovals, marquises, and pears can appear similar on certificates and price lists, with quality differences handled informally through buyer expertise or ignored entirely. GIA's 2027 rollout will create a new basis for price differences within each shape category. Certified top-cut stones will likely command premiums, while poorly cut inventory may face more visible discount pressure. For manufacturers and dealers carrying fancy shape goods ahead of the launch, the window before 2027 is an opportunity to evaluate existing stock, position well-cut parcels advantageously, and advise retail clients on the coming value shift. The initiative also pushes the industry toward more measurement-based quality communication, rather than relying mainly on buyer expertise and supplier relationships.
Next Steps
- Audit current oval, marquise, and pear inventory for cut-quality parameters. Identify which stones are most likely to receive favorable grades under GIA's forthcoming criteria.
- Begin shifting purchasing preferences toward well-proportioned fancy shapes with known cut parameters. A certification premium may emerge before the official 2027 launch.
- Brief retail partners on the upcoming change so they can position it as a quality and trust differentiator with consumers.
- Monitor GIA's early-2027 launch details for submission timelines, fee structures, and any additional shapes that may follow.
- Track whether IGI, HRD, and other labs announce similar programs. Broader lab adoption would likely accelerate the market pricing response.