Carl's Sims 3 Guide - Skills, Traits, Careers, Rewards, and Lifetime Wishes for Ambitions and World Adventures

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Advanced TechAlchemyAthleticBot MakingCharismaCollectingConsignment
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The Sims 3 Collecting Guide

Gems and Gem Cuts in All Expansions up to Supernatural

NanitesSpace RocksTransfigurationWorld Adventures Maps
Anushka's Gem Collection at our Sims 3 Forum
Download Anushka's Gem Collection Lot at our Forum

I really like collecting Gems in the Sims 3. You find them in a rough state. They can be sent to a jeweler to be cut, for a fee. Because of the fee, not all cuts are profitable for all gems. There is one challenge associated with gem collecting: Gem Collector. It will unlock the heart-shaped cut once you've collected 10 types of gems. For this reason, be sure to hold on to any gems worth over $250. You'll thank yourself later when you can cut multiple gems with this amazing 5x bonus. With the heart shaped cut, a pink diamond could easily be worth $8000. Here's a table of the gem cuts:

TypeCostImproves Price by:Break Even ValueCuts RequiredGem Value Cut*
Emerald$10125%$400< $40*
Crystal Ball$100260%$6345$84-171
Star Cut**$400400%$13475$300-599
Heart-Shaped$1000500%$250Gem Collector$600+

Uncut Gems in the Sims 3*This information was provided by Caliban at the Forum. I'm glad someone good at math stopped in to help. Look to this section of the table for when you should use what cut depending on the gem's value, for optimal profit. You'll note some are the same. When your Sim has both cuts available, use the higher level of the two cuts.

The break even price is what the gem must be valued at to make no profit and take no loss. You should usually avoid getting gems cut that are under the break-even with one exception. I usually use the emerald cut on any low value gems, because you need to reach a certain number of cuts in order to unlock each new type of cut.

*Aliena stopped by the forum to point out to us that the data indicates that Emerald, Pear, and Marquis cuts shouldn't be use when looking to maximize profit. You should instead use the next best cut. You'd always use Emerald cut to raise your total number of cuts to unlock the better ones, of course.

Gem Cut Calculator
Jagid has shared a handy gem cut calculator with us. This will let you see how much profit can be made from each cut based on the value of the uncut gem. You can download it here. He has also provided some helpful observations based on gem prices which can help people transfigure tiberium.

Heart Cut Pink Diamond in the Sims 3Here's a list of all gems in the Sims 3 with a ballpark estimate of their value:

Blue Topaz: $20
Smoky Quartz: $25
Emerald: $30
Ruby: $35
Yellow Sapphire: $50
Tanzanite: near 100
Diamond: up to $200
Luminous Gem: $300-350
Rainbow Gem: $700
Pink Diamond: $1600

Gems are found out in the world, but they can also occasionally be found when exploring the catacombs under the graveyard.

A beautiful shot of large spire cut tiberium

World Adventures Gems & Cuts

World Adventures adds plenty of new gems from each location for your Sims to collect. There are also gem cuts to accompany several of them.

Gems available at all Travel Destinations in The Sims 3 World Adventures: The following gems can be found any time your Sim is on vacation in any of the new places:
Geode: $100
Quartz: $20
Septarian Nodule: $300
Tiberium: This gem deserves its own section. See below.
Soulpeace Gem: $2-4,000 These can be obtained from Martial Arts Board Breaking Space Rocks, occasionally in dungeons, but primarily through transfiguration

Jade: $200
Lapis Lazuli: $20

Amethyst: $25
Citrine: $40
Opal: $450

Alabaster: $30
Torquoise: $70

New Gem Cuts
Spire Cut: Available at start. This is used for Tiberium and makes a gem about 70x the value of the base. This seems ridiculous when tiberium costs $6,500 to cut but the value will increase yet again when the gem grows. So, a tiberium with a value of $100 would be made to cost roughly $7000 then jump up to $35000 after growth. Because of these multiplers the cut is amplified by large increments when Tiberium starts valued even 20 simoleons higher. We've recently discovered the heart cut can allow tiberium to grow, so we're currently recommending you skip this one unless it's a bug that's fixed in the future.

Polished Split Cut: Use on Geodes and Septarian Nodules which have a value of at least $33 to make a profit due to the 2.4 multiplier. This cut is unlocked at start for those two gem types.

Skull Cut: Created by transfiguration. This will increase a gem to 10x is value. Twice as powerful as the heart-shaped cut, when employed it can produce an amazing profit.

Tiberium in the Sims 3 World Adventures uncut and spire cut.

Tiberium Gems
Tiberium hails from EA's Command and Conquer series. It's a radioactive energy source and having it in Sim's inventory can cause radiation sickness. The moodlet is -25, and while it may make your Sim feel bad, it cannot kill them. This gem can be a bit confusing so I'll attempt to clarify some of the dynamics we've noticed through discussion on the forum.

Raw, Uncut tiberium can grow on its own without doing anything special to it if it has seen some travel time. Travel seems key here, as the tiberium you get from breaking space rock blocks at home doesn't seem to grow on its own. So, you'll generally not need to cut it if you got it from adventuring.

Tiberium comes with two cuts available to it. You can choose between the spire cut, which is unique to Tiberium, or the heart shaped cut. The heart cut is the best choice here, because it will still grow and is much cheaper. It purifies the tiberium as well as the regular spire and allows it to grow into a large spire cut with a massive value.

Once your Sim has made the initial investment of getting it cut into the heart or spire shape (taking travel's effects on raw tiberium into account), Tiberium is free to grow. Place it on the ground, and within a couple days it will zip in value up to around $40,000 Simoleons. It's the single most profitable item in the game without toying with transfiguration.

Tiberium in close proximity to one another do not grow. It's unclear as yet whether this is a bug or feature. Also, some members have reported tiberium spreading but these reports have not been confirmed. If it does grow it takes more than a few weeks as per my testing.

You can get tiberium from the ground on travel destinations, from the relic vendor in Egypt, from breaking space rock blocks or by transfiguring items with a display case.

Ambitions Gems & Cuts

Ambitions brings a new gem and gem cut to the game. Simmers can unlock the sculptor's egg cut with level 5 in the sculpting skill. The cut costs $175 and gives a x3 multiplier, so should only be used on gems that are worth at least $88 to make a profit.

A Sculptor's Egg Cut Fluorite Palmstone in the Sims 3 AmbitionsAdditionally, a new gem, Fluorite Palmstone, can be found primarily by breaking stone sculptures. Note that with the Savvy Sculptor trait, your Sim will never see this happen because they don't break sculptures, ever! Otherwise, the gem can sometimes be found when rummaging through trash cans, using the miner. Players with World Adventures may find them by breaking space rock blocks, at a relic shop or as a random reward in a tomb.

Late Night Gems

The Sims 3 Late Night Expansion adds two new gems to the game, but no gem cuts:

Smithsonite - $31-71
Vampire's Eye - $220-375

Supernatural Gems, Cuts, and Gemcutting Machine

Sunstone, Moonstone, and Bloodstone in the Sun, Moon, and Gem Dust cutsWith Supernatural installed, you not only get three new gem types and cuts, you can also purchase the Gem-U-Cut Gem Cutting Machine, which will discard all math about breakevens and which cut to use for what gem value. The new machine lets you cut gems free of charge, although you still need to unlock new cuts by cutting x amount of gems.

Bloodstone: $35-105
Sunstone: $330-720
Moonstone: $375-855

You'll unlock the new Sun and Moon cuts at 100 total cuts, each boosting the value by 500% and costing $600 at the mailbox. Given the price, it's clear a Gem Cutting machine can quickly pay for itself. You'll also get Gem Dust from the machine. You get an average 1.5 as a by-product of cutting any gem, and 2.5 with the Gatherer trait that comes with Supernatural. You will not get any dust using the mailbox. Gem Dust is used in Alchemy as an ingredient. You're also be able to cut Gem Dust directly, but it actually lowers the value of the gems (though you get three, it's only worth 25% of the original each). It's better to cut gems and get the dust as a side order with a cut gem to sell. Note that Tiberium gem dust will grow into a spire cut tiberium, so you can get multiple spire cuts from one gem!

Thanks to my dear friend and Forum Moderator Anushka for providing Supernatural gem info and the above screenshot.

NanitesSpace RocksTransfigurationWorld Adventures Maps
The Sims 3 Skills
Advanced TechAlchemyAthleticBot MakingCharismaCollectingConsignment
Laser RhythmLogicMartial ArtsMixologyNectar MakingPaintingPhotography
RidingScienceScuba DivingSculptingSocial NetworkingStreet ArtWriting

Share spawn points and tips for finding these collectibles in various Sims 3 neighborhoods here:

Share Tips and FAQs (22)

Our Sims Forum is the place to go for faster answers to questions and discussions about the game. Use the form below to share your own experiences and provide helpful tips to other readers.

Phil says...
My heart sank a little when I read "EA's Command & Conquer series". RIP Westwood Studios...
15th February 2014 6:47pm
Kim says...
Great info! My Fairy on Sims 3 supernatural (I had ambitions dl'd too) has gather and lucky traits and I got a pear shaped emerald worth approx. 29 million. I wasn't paying attention as it was only the 2nd day I was playing this character. it kinda took the fun out of it cause I can buy anything and don't have the need for work! Anyone else come across a gem worth so much?
2nd September 2013 10:25am
Creste says...
The gem cut calculator isn't accurate
7th November 2013 10:01am
Sharon says...
There is Also the Moon Cut & Sun Cut.
5th April 2014 5:03pm
Gardo says...
Tiberium Dust and Heart Or Spire cut gems need to be placed in a 4x4 square and be placed in the centre for anything to grow. You can get anything from 35k to 45k per Large Spire cut gem once they have grown. I had roughly 14 pieces growing at one time and made a fortune as they sold for 40k each which was very lucky.
1st July 2014 1:30am
Jasmine says...
My dog using sniff out collectible found tiberium. I cut it into the spire cut with the cutting machine from SN and the gem dust grew into its own spire.
5th August 2014 7:28pm
Sarah says...
Where do I actually buy the gem cutter? I have looked under every category in buy mode and I can't find it. I have the Supernatural expansion.
19th May 2014 7:13pm
sickwithsin says...
Sort by room > Study > Hobbies and skills


Sort by function > Entertainment > Hobbies and skills
5th July 2014 9:54pm
Warumono says...
I just noticed tonight that you can grow more Tiberium using the leftover "gem dust" you get when you cut one with the Gem Cutter. I had spread it out like a pathway in front of my sim's house because it glows and looks cool and after a few days I suddenly had small Tiberium spires instead of piles of glowing dust!
11th December 2018 8:25am
Playalot says...
It's cool when that happens, occasionally you'll get a pile of dust that won't grow so those ones just need to be sold or kept.
11th December 2018 10:08pm
Pseudonymous says...
I got a (plain, regular old) diamond that I did the heart cut on... it came out to circa 64g and 500000 simoleons. Is this a bug - or has anyone else seen this before? Unfortunately, I can't make a screen shot of it with the value shown. Just worried my game might be jacked up...
25th December 2018 7:28am
Playalot says...
Well that does sound a little over the top but try another diamond and see what you get. If you're worried about too much money spoiling your game play style then you could always cheat the money away.
26th December 2018 3:00pm
Pseudonymous says...
No other diamond did it (so far). I didn't sell the thing - but I notice that it raised the value of the home property accordingly (as well as the "bills", which saw a jump from circa 2k to 10k in one billing cycle).

Therefore, I stuck the diamond in an alternate real estate property, since apparently those don't get calculated into the bills mix - would that this worked in the real world, haha.... although I suppose it does, vis offshore tax havens. :D
26th December 2018 7:12pm
Playalot says...
I found this page on cut gems etc which you might find interesting. Still nothing like the money you got so I guess your game did glitch out! :)
27th December 2018 5:13pm
JonMom says...
Can anyone tell me if there are any new gems for generations, Seasons, and/or Island Paradise? Thank you.
27th November 2013 10:30pm
Playalot says...
The wiki lists gems and which pack they are from :)
26th December 2018 3:02pm
Antoinette Stone says...
i am playing the sims 3 pets and i need help to find a pink diamond. i really would like help on where i can find a pink diamond so please help.
26th April 2018 9:50pm
Playalot says...
Various tips on a forum post here:
Also google specific worlds for the locations
30th April 2018 4:23pm
Antoinette Stone says...
can anyone help me please where can i find a pink diamond
28th April 2018 10:04pm
Playalot says...
It depends which world you are playing in as the spawners will be set to specific locations for each world.
30th April 2018 4:19pm
Wicked gemini says...
So my sim has a brilliant cut smoky quarts worth exactly $22,068,018 and I was trying to put it on her display in her coven home but it won’t allow me to remove it or do anything with it from her inventory? What can I do!!??
22nd November 2019 12:08am
Playalot says...
Sometimes moving the sims household out in Edit Town then moving them back in works. Or if you use NRAAS Master Controller mod you can do the following:
NRaas > MC > Object Reset > Sim > (choose from the list of items in a sim's inventory)
22nd November 2019 5:31pm
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