Vampire Crawlers Guide: How to Use the Jeweler
Manipulate RNG and Perfect Your Deck by Mastering Gem Rarities
Quick Answer: The Jeweler allows you to tweak gem drop rates to heavily favor your specific build. You unlock this feature by finding the Lapidary Loupe relic in Gallo Tower, giving you access to rarity adjustments and the ability to permanently banish unwanted gems from your runs.
Finding the Lapidary Loupe
You will not have access to the Jeweler right out of the gate. To start messing with your gem economy, you need to track down a specific relic called the Lapidary Loupe.
This item is stashed away inside Gallo Tower. Since Gallo Tower sits at Difficulty 6, you have some serious grinding to do before you can even step foot inside. You have to beat Weeny Bridge just to open the path. If you are struggling to figure out the map progression or find yourself stuck, definitely consult our complete walkthrough on how to unlock all stages in Vampire Crawlers to streamline your pathing.
Once you finally secure the Lapidary Loupe, head back to your village. The Jeweler sets up shop directly inside the Blacksmith building.
Taking Control of Your Drops
The entire point of the Jeweler is RNG manipulation. Instead of praying for the perfect gem to slot into your cards, you can actively alter the spawn pool. You do this by tweaking the rarity of individual gems.
Here is exactly how tweaking rarity shifts your gameplay:
| Action at the Jeweler | In-Game Result | Economic Impact |
| Decrease Rarity | The gem will drop much more frequently. | Cheaper on the wallet. |
| Increase Rarity | The gem will show up far less often. | Moderately expensive. |
| Seal Gem | The gem is completely eradicated from the spawn pool. | Ridiculously expensive (5,665 coins + upgrade fees). |
The Harsh Reality of Sealing Gems
Sealing a gem is the ultimate power move for min-maxing a build. If a specific gem actively ruins your card synergies, removing it entirely ensures your deck stays pure. However, you can only seal gems that have reached the Ultra Rare tier.
This means you are not just paying the flat 5,665 coin fee to seal it. You also have to pay all the incremental upgrade costs to push that gem to Ultra Rare in the first place. That totals thousands of coins for a single banishment. Think of sealing as an endgame luxury for players who know exactly what they want to run every single time. Also, keep in mind that the Jeweler does not offer refunds. Once you spend the currency, it is gone forever.
The Hidden Trap: Your Luck Stat
Here is the biggest mistake new players make when utilizing the Jeweler. They dump a ton of coins into decreasing a gem’s rarity so it spawns constantly, and then they stack the Luck stat during their actual run.
Luck actively forces the game to hand you higher-tier loot. If you boost your Luck, low-rarity gems suddenly become incredibly scarce, completely canceling out the money you just spent at the Jeweler!
To avoid wasting your hard-earned coins, keep these rules in mind:
- Builds relying on common gems should actively avoid investing in the Luck stat.
- If you plan on running high Luck, use the Jeweler to seal competing Ultra Rare gems instead of trying to force low-tier spawns.
- Always map out your desired card synergies before altering any drop rates.
Want to dig deeper into advanced mechanics and start destroying the late-game? Head over to our Guides Category Page to level up your gameplay!
