Diamra vs Caratwise

Caratwise launched in March 2026 with serious operators behind it. The platform is owned by Hari Krishna Exports, one of the world's largest natural-diamond manufacturers, and led by David Berdugo, former COO of Blue Nile and James Allen at Signet. It targets the same independent jewelers Diamra works with every day.

So how do the two compare for a store owner who is evaluating both? Both ship white-label tech that lives near the jeweler’s existing website. Both will be at JCK Las Vegas. Both promise to take the awkwardness out of a custom bridal sale. The differences start once you look at who actually drives the design, how broad the scope is, and whether marketing comes in the box.

Who Caratwise Is

Caratwise is a white-label custom bridal platform for independent jewelers, publicly launched in March 2026 with select U.S. retailers onboarding first. Berdugo spent roughly a decade running operations at Blue Nile and James Allen inside Signet. COO Vicky Xu joined from Blue Nile, where she was VP of Operations, with nine prior years at James Allen.

The public pitch is certainty, not novelty. The site frames it as design, real-time pricing, manufacturing, and delivery in one unified experience, with same-day-yes outcomes powered by Hari Krishna's production. Pricing is a monthly platform fee, tailored to the size of the retailer, with no upfront implementation cost listed on the company's own site.

Where Caratwise Is Strong

Supply chain ownership is the clearest advantage. Hari Krishna manufactures its own diamonds and bridal mountings, which lets Caratwise commit to delivery dates and stone pricing with more confidence than a software-only vendor. For a store that has been burned by missed deadlines or volatile diamond costs, that is a real benefit.

Operator pedigree matters too. Two of the senior team ran the playbooks that reshaped online bridal for a decade. That experience shows up in the configurator: real-time, accurate quoting on the sales floor is genuinely hard, and Caratwise has clearly invested in getting it right.

The integration list is also pragmatic. Caratwise lists Shopify, Magento, Punchmark, Thinkspace, and Blue Star on its site, so a retailer already running on one of those stacks can plug it in without rebuilding the front end.

The trade-off is scope. Caratwise is bridal-first and runs on a configurator model, which means customers choose from preset options the system already knows how to render and price. That works well for an engagement ring buyer who wants to swap stones and metals. It does not cover the customer walking in with a photo of their grandmother’s ring asking for something that looks like it, or the customer who wants a custom pendant for a birthday gift.

Where Diamra Is Different

Diamra is built around generative AI, not a fixed configurator. A customer describes a piece in their own words, shares an inspiration photo, or combines elements that do not exist in any preset library, and the platform produces a visual concept with material estimates in seconds. Design from nothing, rather than design from options, is the core difference.

The scope is also broader. Caratwise concentrates on bridal; Diamra handles anniversary pieces, gifts, religious jewelry, heirloom redesigns, men's jewelry, and repair-as-custom workflows in the same tool. We explored this point in our post on why jewelers need more than a ring builder and specifically on treating every repair as a custom order.

Diamra also ships with marketing and lead generation, not just order management. A branded storefront on the store’s own subdomain, blog content, a newsletter, social assets, and customer reviews come built in. Caratwise is a closing tool for the sales floor. Diamra is also an opening tool for the customer who is searching online at midnight.

The other distinction is manufacturing flexibility. Caratwise routes production through Hari Krishna by default. Diamra is manufacturer-agnostic: the store keeps its bench, its preferred caster, its existing supplier relationships. A vetted CAD and manufacturer network is in development for stores that want a referral, but it is opt-in, not the default.

Which Platform Fits Which Jeweler?

Caratwise fits bridal-focused stores that want a real-time configurator with supply-chain guarantees, are comfortable routing production through Hari Krishna, and already run on one of its supported commerce platforms. The associate-led model suits stores with strong in-person sales floors and committed bridal showrooms.

Diamra fits stores that sell across more categories, want AI-native design rather than preset configuration, and need marketing infrastructure to drive new custom inquiries instead of only processing the ones already coming in. It also fits stores that want manufacturer independence and a branded storefront with their own name above the design experience.

See how Diamra approaches custom design, or check the pricing if you want to try it with your own store.