Gemstone inventory management that stays on your machine
Track cut, clarity, color, carat, origin, and treatment for every stone. Manage lot numbers for rough parcels. Your data never leaves your computer - no cloud, no third parties, no one else can see your inventory.
Free, with open-source modules. No credit card required.
Why gemstone businesses overpay for inventory software
Generic inventory tools treat stones like widgets. Your inventory has 4Cs, origin, treatment, and lot numbers that need specific tracking.
Generic ERPs dont understand gemstones
Your inventory has cut, clarity, color, carat, origin, treatment. Each stone is unique. Generic tools force you into fields that dont fit.
Lot tracking for rough parcels
You buy rough stones in parcels with lot numbers and mixed qualities. You need to track which lot each polished stone came from. Spreadsheets lose this.
B2B valuation by carat weight
Your pricing is per-carat, not per-item. A 2-carat sapphire is worth 4x a 1-carat stone, not 2x. Generic tools dont understand this.
Your data lives on someone else's server
Most inventory tools are cloud-based - your stones, prices, and customers are on their servers. Celerp is self-hosted. Your data stays on your machine, always.
Get started in 3 steps
Download and install Celerp
pip install celerp or download the desktop app. Takes under 2 minutes.
Select the Gemstones preset
Celerp pre-configures gemstone attributes (4Cs, origin, treatment) and lot tracking for rough parcels. All modules enabled from the start.
Import your stone catalog
Import your catalog via CSV with all attributes. Or add stones manually with click-to-edit. Most dealers are operational within 30 minutes.
What you get - included at no cost
Everything a gemstone business needs, built into the core.
Track cut, clarity, color, carat, origin, treatment, and any custom attribute. Click-to-edit bulk updates across your entire catalog.
Every parcel gets a lot number and quality grade. Trace which lot each polished stone came from. Full traceability.
Price by carat weight, not per-item. Track wholesale vs retail pricing. COGS calculated automatically.
Track stones between office, vault, cutting workshop, and trade shows. Real-time visibility across all locations.
Why gemstone businesses choose Celerp
A modular platform that scales from a solo dealer to your whole operation.
- ✓ Gemstone attribute tracking (4Cs + origin)
- ✓ Lot tracking for rough parcels
- ✓ B2B valuation by carat weight
- ✓ Multi-location inventory
- ✓ Click-to-edit bulk data entry
- ✓ Barcode scanning
- ✓ Full double-entry accounting
- ✓ CSV import/export
- ✓ Unlimited users
- ✓ AI operator for inventory queries
Real cost comparison
| Feature | Celerp | Gem Tools |
|---|---|---|
| Year 1 cost | ✓ Free | $15-50K+ |
| Unlimited users | ✓ | Per-user pricing |
| Gemstone attributes (4Cs) | ✓ | ✓ |
| Lot tracking (rough parcels) | ✓ | Extra cost |
| Per-carat valuation | ✓ | ✓ |
| Built-in accounting | ✓ | Extra cost |
| Click-to-edit bulk entry | ✓ | ✗ |
| Self-hosted / data ownership | ✓ | Optional |
| AI operator | ✓ | ✗ |
| Modular architecture | ✓ | ✗ |
Competitors charge $15-50K for gemstone ERP and store your data on their servers. Celerp is free and your data stays local.
How we make money
The desktop app is free. We charge for optional Connect features: connector sync (Shopify, WooCommerce, Xero, QuickBooks), encrypted backups, and AI. No hidden fees, no per-user pricing.
Free. Forever.
No per-user pricing. Add your whole operation for $29/mo.
Full gemstone ERP - 4Cs tracking, lot management, B2B pricing, accounting.
Download FreeSource-available. Self-hosted. Free forever.
Frequently asked questions
Is my data private?
Yes. Celerp is self-hosted - your data lives on your machine. No one else can see your inventory, pricing, or customer information. No cloud required. You control everything.
Can I track gemstones by cut, clarity, color, carat?
Yes. Celerp supports custom attributes on any item. Define your own fields for cut, clarity, color, carat, origin, treatment - whatever your business needs.
Can I track rough stone parcels?
Yes. Every parcel gets a lot number, quality grade, and weight. When you polish stones, Celerp traces which parcel each finished stone came from.
Does Celerp support per-carat pricing?
Yes. Celerp supports multiple pricing models including per-carat wholesale pricing. Track wholesale vs retail prices. COGS calculated automatically.
Can I import my existing stone catalog?
Yes. Import your catalog via CSV with all attributes. Or add stones manually with click-to-edit. Most dealers are operational within 30 minutes.
Your stones. Your data. Your machine.
Free, source-available, self-hosted. Your inventory stays on your computer - no one else can see it. No consultants, no cloud required.
Source-available. Self-hosted. Free forever.