Diablo 3 Gem Calculator

Category: Game

Calculate the materials needed to upgrade gems to your desired level

Select Gem Type

Ruby
Topaz
Emerald
Diamond
Amethyst

Starting Gems

Chipped
Flawed
Regular
Flawless
Perfect
Radiant
Square
Flawless Square
Perfect Square
Radiant Square
Marquise
Imperial
Flawless Imperial
Royal
Flawless Royal

Target Gem

Gem Crafting Information

Gem Type Helmet Weapon Armor
Ruby Life per Kill Weapon Damage Strength
Topaz Magic Find Resource Cost Reduction Intelligence
Emerald Extra Gold Critical Hit Damage Dexterity
Diamond Cooldown Reduction Elite Damage All Resistance
Amethyst Life % Life on Hit Vitality
Upgrade Death's Breath Gold Cost Gems Required
Chipped → Flawed 0 500 2
Flawed → Regular 0 750 2
Regular → Flawless 0 1,250 2
Flawless → Perfect 0 2,000 2
Perfect → Radiant 0 3,500 2
Radiant → Square 0 7,500 3
Square → Flawless Square 0 20,000 3
Flawless Square → Perfect Square 0 30,000 3
Perfect Square → Radiant Square 0 40,000 3
Radiant Square → Marquise 0 100,000 3
Marquise → Imperial 1 200,000 3
Imperial → Flawless Imperial 2 300,000 3
Flawless Imperial → Royal 3 400,000 3
Royal → Flawless Royal 4 500,000 3

Efficient Gem Crafting

  • Upgrade gems in bulk to save time
  • Death's Breath are only needed for high-level gems (Marquise and above)
  • Lower tier gems (below Marquise) can be combined without the Jeweler, directly from inventory
  • Flawless Royal gems are the highest level and cannot be upgraded further
  • Farm Act I Bounties for generous gem drops
  • Look for the "Hoarder" legendary gem to increase gold drops for crafting
  • Death's Breath can be farmed from Elite monsters

Gem Extractor

Remember that you can extract gems from socketed items without destroying the gem by using the Jeweler. This costs gold but preserves your valuable high-level gems.

Gem Upgrade Formula

To upgrade gems in Diablo 3, the calculator follows this principle:

For levels 0–4: Combine 2 lower-level gems1 higher-level gem
For levels 5–14: Combine 3 lower-level gems + Gold + Death's Breath (starting from Marquise)1 higher-level gem

What Is the Diablo 3 Gem Calculator?

The Diablo 3 Gem Calculator is a simple and effective tool to help players plan and calculate the materials required to upgrade gems to higher tiers. Whether you're preparing for high-level Greater Rifts or just want to improve your stats, this tool helps you save time and resources by showing exactly what you need to reach your desired gem level.

Gem upgrading is an essential part of the Game, and this calculator makes it easier by removing guesswork and manual tracking. If you're looking to understand how many base-level gems, how much gold, and how many Death's Breaths you'll need, this tool has you covered.

How to Use the Calculator

  • Select your gem type: Choose from Ruby, Topaz, Emerald, Diamond, or Amethyst depending on the stat you want to boost.
  • Enter your current gem inventory: Use the “+” and “−” buttons to input how many of each level you already own.
  • Set your goal: Choose your target gem level (e.g., Flawless Royal) and how many of that gem you want.
  • Click “Calculate”: The tool will show the total gold and Death’s Breath needed, along with step-by-step crafting instructions.
  • Check the visual breakdown: See how your starting inventory was used and what steps to take next.

Why This Tool Is Useful

  • Helps you optimize gem combinations to avoid wasting materials.
  • Great for planning your gem crafting strategy before heading into a long farming session.
  • Quickly reveals whether you need to gather more Death's Breath or gold.
  • Works as a gem level calculator to determine how close you are to your target.
  • Useful for anyone working on Diablo 3 gem fusion or looking to enhance Diablo 3 gems for endgame builds.

Understanding Gem Stats

Each gem type offers unique bonuses depending on where you socket it:

  • Ruby: Strength (Armor), Weapon Damage, Life per Kill
  • Topaz: Intelligence, Resource Cost Reduction, Magic Find
  • Emerald: Dexterity, Critical Hit Damage, Extra Gold
  • Diamond: All Resistance, Elite Damage, Cooldown Reduction
  • Amethyst: Vitality, Life on Hit, Life %

Choosing the right gem type and level can have a big impact on your build, so using the Diablo 3 Gem Calculator ensures you're crafting the right gems for the job.

Frequently Asked Questions (FAQ)

How many gems do I need to create a Flawless Royal?

It depends on what gems you currently own. The calculator determines this automatically, but as a general rule, you need over 3,000 base-level (Chipped) gems to make one Flawless Royal from scratch.

Why do some upgrades cost Death's Breath?

Death’s Breath is a special crafting material required for high-level upgrades, starting at the Marquise level. The calculator factors this in so you’re never caught off guard.

Can I use this tool if I only have mid-level gems?

Yes. Just enter what you already own—whether they’re Flawed, Radiant, or Royal—and the calculator will determine the most efficient upgrade path.

Does this tool work with Other games like Blox Fruits or Minecraft?

No. This calculator is specific to Diablo 3 gem upgrades. If you’re looking for a Blox Fruits damage tool, Nether portal guide, or golf handicap tool, those are separate tools.

Is this calculator useful for seasonal characters?

Absolutely. Since seasonal characters often start from scratch, it’s helpful to plan your upgrades efficiently from the beginning.

Additional Tips

  • Combine gems in Diablo 3 in bulk to speed up the process.
  • Use the “Gem Crafting Information” tabs in the tool to review upgrade costs and strategies.
  • Farm Act I Bounties and Elite monsters for more gem drops and crafting materials.
  • Use the "Hoarder" legendary gem to boost your gold income for upgrades.

Related Tools You Might Like

If you're into other games or systems, here are a few tools you might find useful:

  • Blox Fruits stat point planner – Great for maximizing fruit mastery and damage scaling.
  • Golf Handicap Calculator – Keep track of your golf scoring and handicap index.
  • Clash of Clans strategy planner – Optimize base building and troop upgrades.
  • Minecraft circle tool – Quickly generate pixel-perfect circles in your builds.
  • D&D 5e point allocation tool – Customize character stats with ease.
  • Nether Portal Calculator – Create efficient portal networks in Minecraft.

While each game is different, tools like these help players focus on fun by simplifying planning and crafting. The Diablo 3 Gem Calculator is just one way to streamline your gameplay experience.