For UK Dealers of Unique Items
No more spreadsheet gymnastics. No more midnight calculations before VAT returns. Track purchases, manage inventory, and generate HMRC-compliant reports—automatically.
Purpose-built for dealers of unique items—jewellery, watches, antiques, handbags, vintage fashion, and more. Currently in private beta. Join the waiting list to be notified when GemJam is available.
Real problems faced by UK dealers every day, solved with GemJam's purpose-built features
Purchase invoices scattered across email, folders, and filing cabinets. Tracking supplier relationships is a nightmare.
Calculating VAT on the margin for second-hand goods is incredibly complex. Never confident it's correct for HMRC.
Selling on eBay, 1stDibs, and in-person. Tracking which item sold where, the commission, and order details is a nightmare.
Each piece is unique and needs detailed provenance, condition reports, and photos. Current system can't keep up.
A database that works for rings doesn't work for handbags. End up with 50 fields where most are empty, or cramming everything into a 'notes' field.
Spending hundreds a month on a bookkeeper to sort through receipts, reconcile sales, and prepare everything before it goes to the accountant. All because your current system can't produce clean records.
Not a hundred features you'll never use. Just the essentials, done properly.
Stop calculating margins by hand. GemJam tracks which purchases qualify, calculates the VAT automatically, and generates HMRC-compliant reports.
Record a purchase, add it to inventory, sell it on any channel. One flow, everything linked, nothing lost.
That receipt from three years ago? The provenance document for the Georgian brooch? Found instantly, not after an hour of digging.
GemJam was founded by a UK jewellery dealer who spent years trying to make generic inventory software work for the unique demands of the trade—VAT margin scheme calculations, provenance tracking, multi-channel sales.
Nothing fit. Spreadsheets couldn't handle VAT margin scheme properly. Airtable needed expensive Zapier integrations just to send an invoice. Generic inventory systems were built for warehouses, not unique items with provenance.
So we built something purpose-made for dealers of unique items—where every piece has its own story, provenance, and price. Every feature exists because a real dealer needed it.
The result: software that actually understands how you work.
Every feature designed for dealers of one-of-a-kind items
GemJam is currently in private beta. Join the waiting list and we'll notify you as soon as it's available.