Active timer
00:00:00
Stage
Part
Today
Add time manually
Use 24-hour time, e.g. 23:00 to 01:00 counts as 2h across midnight. Or just enter a Duration. Date defaults to today.
All entries
Range
By stage
By grit / lap
By crown / pavilion
By stage and part
By stone
By day
Add a stone
Colour
or pick any custom colour
Stone details (optional)
Gem reference
RI and dispersion for common materials match Gem Cut Studio, plus a few requested synthetics (YAG, GGG, GAGG). Birefringence, SG, hardness, optic character, crystal system, and pleochroism are from standard gemological references; individual stones vary by origin and treatment. Critical angle is computed from RI. Click a column to sort. Verify for critical work.
Lap progressions
Your own reference for what lap/grit comes next, by material. Not a decreed "official" progression, just whatever you (or your team) document here so everyone can check the same source. Steps reuse the Stages and Grit/lap options from Settings. Export the library to share your shop's standard with others; import to adopt someone else's.
Stages
The steps of your cutting process. Give a stage grit / lap options and they'll appear as a dropdown when you track that stage.
Machines and cutters
For shops: add your machines and cutters, and the Timer tab becomes a live board with one timer per bench, tracking hours by machine and by cutter. Leave both empty and the timer stays a single timer, exactly as before.
Backup and data
Linking a backup file (Chrome or Edge on desktop) auto-saves every change to a real file on your computer, so your data survives clearing your browser. On other browsers, use Export regularly.
Recent snapshots
Automatic in-browser restore points (last 8 changes). Recover from an accidental edit or erase.
Danger zone
Appearance
Dark is easier on the eyes in a dim shop. Light is easier under a bright bench lamp or in daylight.
This setting stays on this device. It is not part of your synced data.
Account and sync
Optional for now. Creating an account uploads a copy of your data so it can sync across devices. It never deletes or replaces what's already on this device. Your automatic snapshots and optional backup file (Settings → Backup & Data) keep your work safe either way, so trying sync or the free trial can't cost you your data.
About and feedback
Kaizen Gems
Feedback opens your email app addressed to the developer, pre-filled with the version you're on.