In Cut a Gem, the Roblox tycoon where you grind Geodes down into sellable gemstones, your income depends almost entirely on the equipment you install at your plot. The Gear Shop sells four categories of items paid for with in-game cash: Grinders that process Geodes, Totems that add passive bonuses, Displays that show off a single gem, and Decor that dresses up your yard.
Quick answer: Buy Grinders first to speed up processing and raise purity, then add Totems for size, value, and speed bonuses. Displays and Decor are optional and do not affect grinding output.
Grinders: speed and purity upgrades
Grinders turn Geodes into gemstones. Higher tiers finish grinds faster and produce more purity, which raises how much each gem sells for. This is the upgrade path that most directly grows your income, so it is usually worth prioritizing over cosmetic items.
| Grinder | Cost | Effect |
|---|---|---|
| Basic Grinder | $1k | Starter speed and purity |
| Power Buffer | $21k | 2x faster, +22% purity |
| Hydro Glazer | $440k | 4x faster, +43% purity |
| Laser Cutter | $25.5M | 8x faster, +51% purity |
| Plasma Shiner | $1B | 16x faster, +53% purity |
| Quantam Aligner | $250B | 32x faster, +55% purity |
| Ultrasonic Crusher | $10T | 64x faster, +56% purity |
Totems: passive bonuses
Totems apply chance-based effects while you grind. Some make gems larger so they weigh more and sell for more, others speed up grinding, turn gems radioactive for a big value multiplier, or push customers to pay extra. You can stack different Totems for combined effects.
| Totem | Cost | Effect |
|---|---|---|
| Small Growth Totem | $250k | 15% chance to grow a gem, +15% bigger |
| Increase Rich Customer | $12M | 30% chance a customer pays +20% more |
| Medium Growth Totem | $50M | 30% chance to grow a gem, +30% bigger |
| Big Growth Totem | $1B | 50% chance to grow a gem, +60% bigger |
| Grinder Speed Totem | $5B | 50% chance a grind finishes 5% faster |
| Radioactive Totem | $5B | 8% chance a gem turns radioactive (2.5x value) |
Note: A larger gem weighs more, and heavier gems sell for a higher price. That makes the Growth Totems a reliable way to raise the value of what you send to buyers.
Displays: showcase a single gem
Displays let you put one gem on show at your plot. The upgraded Gold Display also increases the gem’s value the longer it sits on display, so it doubles as a slow value booster rather than a pure decoration.
| Display | Cost | Effect |
|---|---|---|
| Basic Display | $1M | Show off one gem |
| Gold Display | $1B | Show off one gem that grows more valuable over time |
Decor: cosmetic yard items
Decor items are purely cosmetic. They do not change grinding speed, purity, or gem value, so buy them only when you want to personalize your plot. The Lamppost adds lighting to keep the yard visible around the clock.
| Decor | Cost | Description |
|---|---|---|
| Traffic Cone | $50k | A classic road cone |
| Sunflower | $150k | A cheerful bloom for the yard |
| Caution Board | $750k | Wet-floor warning, workshop chic |
| Bench | $2.5M | Somewhere to sit and admire your gems |
| Lamppost | $2.5M | Lighting to keep the yard lit day and night |
| Flower Pot | $5.5M | A flower pot for a prettier yard |
Which gear to buy first
If your goal is faster money, spend on Grinders before anything else, since each tier compounds both speed and purity. Once grinding keeps up with your Geode supply, add Growth Totems and the Increase Rich Customer Totem to lift the value of each sale. Displays and Decor come last because they do not change your earning rate. Rarer Geodes still produce the best gems, so keep reinvesting your cash into better equipment and higher-tier rocks as you progress.
