For Store Owners
Caratwise vs Diamra: Two Approaches to Custom Jewelry Tech
· 6 min read
Caratwise launched in March 2026 with real backing. The platform is owned by Hari Krishna Exports, one of the largest diamond manufacturers in the world, and led by a CEO who spent a decade running Blue Nile and James Allen inside Signet Jewelers. It is aimed at the same independent jewelers Diamra works with every day.
So how do the two compare? Both platforms handle custom orders for independent stores. Both offer white-label tech that lives on a jeweler's own website. Both will be at JCK Las Vegas. The differences start showing up once you look at how each one thinks about design, manufacturing, and growth.
Who Is Caratwise?
Caratwise is a white-label custom bridal platform for independent jewelers, announced in March 2026 under CEO David Berdugo, former COO of Blue Nile and James Allen. It is owned by Hari Krishna Exports, an Indian diamond manufacturer producing around 500,000 carats annually. The platform focuses on engagement rings and bridal jewelry, with real-time pricing tied to metal costs and diamond selection.
Berdugo's arrival is notable on its own. He spent a decade building the digital brands that Signet recently restructured, including the wind-down of James Allen in 2026. Now he is leading a tool designed to help the independent retailers those brands once competed against. The public pitch is "certainty", not novelty: confirmed pricing, confirmed delivery dates, one workflow.
Where Caratwise Is Strong
Supply chain ownership is the clearest advantage. Hari Krishna manufactures its own diamonds and jewelry, which lets Caratwise commit to delivery dates and stone pricing with more confidence than a software-only vendor. For a store owner who has been burned by missed deadlines or volatile diamond costs, that is a real benefit.
Leadership credibility matters too. Berdugo ran the playbook at Blue Nile that reshaped online bridal shopping, which opens doors with retailers who already know the name. Caratwise also launched with working integrations into Shopify, Magento, Punchmark, Thinkspace, and Blue Star, so stores can plug it into whatever front-end they already run.
The trade-off is scope. Caratwise is bridal-first and runs on a configurator model, meaning 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 a customer walking in with a photo of their grandmother's ring asking for something that looks like it.
The table below lays out the main points of comparison, based on public information and how the two platforms position themselves today.
| Dimension | Caratwise | Diamra |
|---|---|---|
| Design approach | 3D configurator with photoreal rendering | Generative AI from text to concept, plus 3D projections and models |
| Manufacturing | Vertically integrated via Hari Krishna | End to end workflow with planned vetted manufacturer network |
| Production tracking | Connected workflow, CAD, setting, QC, shipping | Integrated Craft Space: setting, QC, delivery |
| Pricing model | Monthly fee, not disclosed | Monthly pricing |
| White label | Embedded on jeweler's existing website | White label website that integrates into jeweler's current website |
| E-commerce | Shopify, Magento, Punchmark, Thinkspace, Blue Star | Integrates into existing jeweler websites |
| Go to market | Enterprise sales, JCK exhibitor | Self service plus content marketing, blog presence |
| In store | Tablet based configurator | Omnichannel, runs in any browser on desktop, tablet, or phone |
| Delivery | Firm delivery dates at point of sale, manufacturing owned | Delivery tracking through Craft Space |
| AI capabilities | None, 3D configurator with preset options | Core differentiator: generative AI from natural language |
| Estimates | Real time pricing for preset bridal options, tied to metal cost and diamond selection | Instant material and labor estimates for any custom piece, generated from the design itself |
| Design generations | Configurator variations within preset templates | AI generations from text, images, or ingredients, with iteration on each concept |
| Measurements | Standard ring sizes through configurator | Customer measurement capture for rings, bracelets, necklaces, and earrings, stored on the order |
| Marketing support | Not mentioned | Marketing assets plus lead generation for customers |
| Customer feedback | Not mentioned | Customer review integrated into the platform |
| Industry presence | JVC, JCK, AGS, JBT, CBG | JCK exhibitor |
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 unpacked this 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 tools, not just order management. Website integration, a customer-facing design salon, blog content, and customer review infrastructure come built in. That distinction matters because independent jewelers often piece together fragmented tools for design, CRM, and marketing, and most custom platforms only solve one slice of that.
Which Platform Fits Which Jeweler?
Caratwise fits bridal-focused stores that want supply-chain guarantees and already run on one of its supported commerce platforms. 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 rather than only process the ones already coming in.
The bridal category itself is worth the attention both platforms are giving it. Bridal jewelry is a $53.8 billion global market projected to reach $91.7 billion by 2035, and personalization is driving most of that growth. There is room for more than one approach, and honest positioning helps store owners pick the right one for their business.
The short version: Caratwise helps you manage custom orders. Diamra helps you create more of them. See how Diamra approaches this, or check the pricing if you want to try it with your own store.