Purpose-Built for UK Antique Dealers
Antique shop inventory management software that tracks provenance, period, condition, and margins. Manage your stock across shops, fairs, and online channels from one place. Built by a former UK dealer who spent years wrestling with generic tools.
Inventory
6 items
Art Deco Diamond Ring
JWL-2026-0089
Cartier Tank Watch
WCH-2026-0034
Georgian Silver Candelabra
ANT-2026-0056
Hermès Birkin 25
HBG-2026-0012
Edwardian Sapphire Pendant
JWL-2026-0091
Rolex Datejust 1601
WCH-2026-0035
Antique dealing has unique demands that generic inventory software simply cannot handle. Spreadsheets and off-the-shelf tools leave gaps that cost you time, money, and compliance.
Every antique piece needs its history documented — who owned it, where it came from, and its journey through dealers, estates, and auctions. Generic software has no fields for this. Spreadsheets can track it, but linking provenance to contacts and purchases across hundreds of items is a nightmare.
Most antique stock comes from private sellers, house clearances, and estate sales, making the Margin Scheme essential. But tracking which items qualify, calculating VAT at 1/6 of the margin, and generating HMRC-compliant records requires precision that manual methods cannot guarantee.
Antique dealers sell through physical shops, antiques fairs, Shopify, and soon eBay. Keeping stock accurate across channels when every item is unique means constant manual updates and the risk of selling something that is already at a fair or listed online.
Taking stock to fairs means knowing exactly what is where. Which pieces are at the shop, which are at this weekend's fair, and which are listed online? Without a system that tracks locations, you end up with handwritten lists and guesswork.
Antique dealer inventory software designed around the way UK antique dealers actually work.
Create custom fields to record where every antique came from, who you bought it from, and the chain of ownership. Every purchase links to your contact database, giving buyers the confidence they expect when purchasing pieces with history.
GemJam tracks the VAT status of every purchase and calculates Margin Scheme VAT automatically when items sell. No manual formulas, no eligibility guesswork, no compliance gaps.
List your antiques on Shopify directly from GemJam. When a piece sells on any channel, your inventory updates everywhere automatically. eBay integration is in development.
Track which items are at your shop, which are at a fair, and which are listed online. Record sales from any location on your phone and your inventory updates everywhere instantly.
PUR-2026-0042
Hatton Garden Estates · 15 Feb 2026
Subtotal
£8,250.00
VAT
£0.00
Margin Scheme
Total
£8,250.00
Line Items
Art Deco Diamond Ring, c.1925
JWL-2026-0089
£3,450.00
AvailableVictorian Pearl Brooch
JWL-2026-0090
£1,800.00
SoldCartier Tank Watch, 1970s
WCH-2026-0034
£3,000.00
AvailableCreate custom templates with the fields your stock actually needs. An antique table requires different details from a Georgian brooch — GemJam lets you define both.
Add custom fields for chain of ownership, acquisition source, and historical context — whatever your stock requires. Every purchase links to your contact database for a complete audit trail from purchase to sale.
Create template fields for period and era — Georgian, Victorian, Edwardian, Art Deco, mid-century modern, or whatever categories suit your stock. Filter your inventory by era to find exactly what a customer is looking for.
Add condition fields to your item templates — from mint to heavily restored. Accurate condition information is critical for pricing, customer expectations, and reducing returns.
Include restoration fields in your templates — what was done, when, and by whom. Buyers of antiques expect transparency about repairs and restorations, and accurate records protect both you and the customer.
Most antique stock comes from private sellers, house clearances, and estate sales. The VAT Margin Scheme lets you pay VAT only on the profit margin rather than the full selling price. GemJam handles this automatically.
Automatic eligibility tracking based on seller VAT status
VAT calculated at 1/6 (16.67%) of the profit margin on eligible items
HMRC-compliant Stock Book, VAT Return Report, and dual invoice formats
Export to Xero-compatible format or email directly to Dext
How purpose-built antique dealer software compares to the alternatives.
| Feature | GemJam | Spreadsheets | Generic Inventory | SeekUnique |
|---|---|---|---|---|
| Provenance tracking | Yes | Manual columns | No | Unclear |
| Period and era categorisation | Yes | Manual columns | No | Yes |
| VAT Margin Scheme | Yes | Manual formulas | No | Yes |
| Multi-channel (Shopify; eBay coming soon) | Yes | No | Varies | Own website + eBay |
| Photo management | Yes | No | Yes | Yes |
| Accounting export (Xero/Dext) | Yes | No | Varies | Built-in |
| Cloud-based (any device) | Yes | Yes | Varies | Desktop + optional hosting |
| Unique item management | Yes | Limited | Bulk-focused | Yes |
Practical answers for UK antique dealers considering GemJam.
GemJam lets you create custom item templates with exactly the fields you need for your stock. An antique table needs different details from an antique brooch, so you define the fields that matter — provenance, period, condition, materials, maker, dimensions, restoration history, and anything else. Each item type gets its own template, so nothing is missing and nothing is wasted.
GemJam’s custom templates let you add provenance fields tailored to your stock — chain of ownership, acquisition source, historical context, or whatever details matter for your items. Every purchase is linked to your contact database, so you can trace who you bought from, when, and at what price. This gives buyers the confidence they expect when purchasing antiques with history.
GemJam tracks the VAT status of every purchase automatically. When you buy antiques from a private individual, estate sale, or non-VAT-registered seller, the item is flagged as Margin Scheme eligible. When sold, GemJam calculates VAT at 1/6 of the profit margin rather than the full selling price. It generates HMRC-compliant reports including the Stock Book, VAT Return Report, and dual invoice formats.
Yes. You can import items from Shopify, upload a spreadsheet (CSV or Excel), or add items individually. Each piece gets its own record with photos, purchase history, and whatever custom fields your templates define — provenance, condition, period, or anything else. Most antique dealers are up and running within a day.
Yes. GemJam supports multiple locations, so you can track which items are at your shop, which are at a fair, and which are listed online. When you sell at a fair, record the sale on your phone and your inventory updates everywhere instantly. No more double-selling or losing track of stock across venues.
SeekUnique and similar tools were built years ago and have a legacy feel. GemJam is a modern cloud-based SaaS platform that works on any device with no software to install. It includes Shopify integration for multi-channel selling (eBay coming soon), automatic VAT Margin Scheme calculations, and accounting exports to Xero and Dext. It was built by a former UK dealer who understands the specific challenges of managing unique inventory.
GemJam is antique dealer software that tracks provenance, condition, and margins while keeping you HMRC-compliant. Join the waiting list for early access.