Nionunt

Bear Hammer Works Studio

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About this app

Design gem cuts, trace how light moves through them and plan 🗺️ your rough.

Nionunt is a design tool 🛠️ for gem cutters. Pick a cut, set its angles and see 👀 the finished stone before you touch the machine.

Choose a cut family: round, oval, pear, marquise, cushion or emerald step. Pick a material such as quartz, or add your own with its refractive index, dispersion and specific gravity. The app 📱 builds every facet and shows the crown, the pavilion and the side view, with the estimated weight at your planned width.

Follow the light. The app 📱 traces rays through the stone and gives each design a light score 🔢. The report 🧾 shows how much light returns to the eye, how much leaks out of the pavilion and where the head shadow falls. It explains why ❓ the stone looks the way it does. You can tap the stone to follow a single ray.

Get a cutting plan 🗺️. Enter the number 🔢 of teeth on your faceting machine's index wheel, and Nionunt lists each machine step with its angle, its index positions and a short note 📝 on when to stop cutting.

Plan 🗺️ your rough. Add a rough stone with its form, its size, an optional measured weight and notes 📝. The app 📱 fits your saved designs into it and ranks them by finished weight, yield and light.

What you can do:
- Design brilliant and step cuts in several families
- Use built-in materials or create your own
- Read light return, leakage and a pavilion angle window
- Optimize a design, compare ⚖️ two reports and export 📤 a performance card
- Follow a step-by-step cutting plan 🗺️ for your index gear
- Track pebbles, crystals, blocks and octahedra of rough

Nionunt helps you decide on a cut before the stone is on the wheel.