Overview
Learn everything about the Gemology skill in The Sims 4 Crystal Creations Stuff Pack! With this skill, your Sims can cut, charge, and craft dazzling Gemstones and Jewelry. Discover how to build the skill, earn rewards, and even cheat your way to mastery.
About the Gemology skill

- The Gemology skill comes with The Sims 4 Crystal Creations Stuff Pack, and is a 10 level skill.
- Elder, Adult, Young Adult, and Teen Sims can all build this skill.
- The Gemology skill is needed to complete the Crystal Crafter Aspiration.
How to build Gemology skill
There are multiple ways for your Sim to build the Gemology skill. Some interactions are only unlocked when your Sim reaches a certain level of skill.A green progress bar will appear above your Sim’s head and gradually fill up as they’re building a skill. You can also check their progress by selecting the Skills tab in the Sim Panel at the bottom left of Live Mode. Here, you can check how many skills your Sim has and what level they are in each.In Build Mode, buy The All-In-One Gemology Table by Humphrey Inc. Using the Gemology Table, your Sims can Cut Gemstone, Design Jewelry, and Design Random Jewelry. To begin crafting, your Sim will need to have crystals and metals in their Personal Inventory. These can be bought directly from the crafting menu when using the table, or your Sim can find them by digging up rocks in different neighborhoods. The worlds of Willow Creek and Oasis Springs are a great place to start! As your Sim increases their skill level, more Jewelry designs and Gemstone cuts become available. To see what unlocks at each level, check out the skill levels below.
Charge the Gemstones and Jewelry crafted with crystals on the Mystical Moonlight Crystal Grid to unlock unique powers that can boost skills, relationships, and more!Drag and drop the Gemstone or Jewelry to the grid and let it charge outdoors between 7 PM and 7 AM. A fully charged crystal will have a magical glow.
Reading skill books will work towards building skills, but it is slower than other methods. Books will only get you as far as level 9 of a skill. To buy skill books:The skill books are:
- 1Select a bookshelf and choose Purchase Books.
- 2In the pop-up, select the drop-down at the top-left that reads Show All.
- 3Choose Skill and scroll through to find the book you want to buy. These will be added to your Sim’s bookshelf.
- Gemology Vol 1: Shine On!
- Gemology Vol 2: Cutting Corners Carefully
- Gemology Vol 3: The Subtle Art of Jewelry Making
If you own The Sims 4 Jungle Adventure Game Pack, the Peace and Quiet Lot Trait helps your Sim build skill faster when reading skill books.
If you own The Sims 4 Discover University Expansion Pack, your Sim can attend skill-building classes. These are rabbit-holes, so your Sim will leave the Lot for some time and then come back when the class is over. Note: Skill Classes are only available between 9 a.m.– 9 p.m.
- 1In Live Mode, select your Sim’s phone.
- 2Open the Business app (the briefcase icon).
- 3Choose Sit in on Skill Class (§250).
- 4In the pop-up menu, choose Gemology. Your Sim will leave the Lot and gain Gemology skill while at the class.
If you own The Sims 4 Businesses & Hobbies Expansion Pack, your Sim can learn or teach the Gemology skill using the Sharing is Caring Whiteboard. You’ll find this in Build Mode.
Gemology skill levels
As your Sim builds the Gemology skill, they’ll unlock new rewards, abilities, and interactions along the way. A green progress bar will appear above your Sim’s head and gradually fill up as they’re building a skill. You can also check their progress by:- 1Entering Live Mode.
- 2Selecting the Sim Panel (bottom left).
- 3Selecting the Skills tab.
At this level, your Sim can craft these Jewelry designs: And these Gemstone shapes:
- Basic Bracelet (§40)
- Chunky Bracelet (§45)
- Raw Bracelet (§50)
- Basic Earrings (§40)
- Chunky Earrings (§45)
- Raw Earrings (§50)
- Basic Necklace (§40)
- Chunky Necklace (§45)
- Raw Necklace (§50)
- Basic Ring (§40)
- Chunky Ring (§45)
- Raw Ring (§50)
- Spire-Shaped Gemstone (§45)
- Cabochon-Shaped Gemstone (§50)
At this level, your Sim can Discuss Crystal Properties with other Sims and cut the Emerald-Cut Gemstone (§70).They can also craft these Jewelry designs:
- Delicate Bracelet (§70)
- Delicate Earrings (§70)
- Delicate Necklace (§70)
- Delicate Ring (§70)
At this level, your Sim is more likely to find crystals and metals when digging at rocks, and they can cut Seed-Shaped Gemstones (§100).They can also craft these Jewelry designs: Using the Seed-Shaped Gemstone, your Sim can plant it to grow a Crystal Tree. As it evolves, and the more you care for it, the higher quality crystals it’ll produce.
- Lunar Goddess Bracelet (§100)
- Lunar Goddess Earrings (§100)
- Lunar Goddess Necklace (§100)
- Lunar Goddess Ring (§100)
At this level, your Sim can craft the Pear-Shaped Gemstone (§130) and these Jewelry designs:
- Eye Bracelet (§130)
- Eye Earrings (§130)
- Eye Necklace (§130)
- Eye Ring (§130)
At this level, your Sim can craft the Gemstones and Jewelry faster. They can also now craft Brilliant-Cut Gemstones (§190) and these Jewelry designs:
- Bling Bracelet (§190)
- Bling Earrings (§190)
- Bling Necklace (§190)
- Bling Ring (§190)
At this level, your Sim will get additional crystals and metals when digging at rocks. They can now craft Star-Shaped Gemstones (§250) and these Jewelry designs:
- Mystical Bracelet (§250)
- Mystical Earrings (§250)
- Mystical Necklace (§250)
- Mystical Ring (§250)
At this level, your Sim can craft Gemstones and Jewelry even faster. They can also now craft Skull-Shaped Gemstones (§320) and these Jewelry designs:
- Botanical Bracelet (§320)
- Botanical Earrings (§320)
- Botanical Necklace (§320)
- Botanical Ring (§320)
At this level, your Sim can craft Heart-Shaped Gemstones (§400) and these Jewelry designs:
- Edwardian Gothic Bracelet (§400)
- Edwardian Gothic Earrings (§400)
- Edwardian Gothic Necklace (§400)
- Edwardian Gothic Ring (§400)
At this level, your Sim will get even more crystals and metals when digging at rocks. They can now craft Plumbob-Shaped Gemstones (§500) and these Jewelry designs:
- Starry Sailor Bracelet (§500)
- Starry Sailor Earrings (§500)
- Starry Sailor Necklace (§500)
- Starry Sailor Ring (§500)
At this level, your Sim can craft Gemstones and Jewelry at record breaking speeds. They can now craft Gnome-Shaped Gemstones (§650) and these Jewelry designs:
- Plumbob Bracelet (§650)
- Plumbob Earrings (§650)
- Plumbob Necklace (§650)
- Plumbob Ring (§650)
Gemology skill cheats
When using skill cheats, type in the number of the level you want to reach. For example, putting stats.set_skill_level major_gemology 7 into the cheat bar will get your Sim’s Gemology skill up to level 7.PC and Mac
PlayStation®
Xbox
- 1Press Control + Shift + C to open the cheat dialogue box.
- 2Type testingcheats true and press Enter to turn on cheats.
- 3Type stats.set_skill_level major_gemology [skill level] and press Enter.