Fish It Ruby Gemstones Guide (March 2026) Complete Diamond Rod Quest

Welcome to the most comprehensive Fish It Ruby Gemstones guide available! If you’re struggling to obtain that elusive Ruby Mutated Gemstone for the Diamond Rod quest, you’ve come to the right place. I’ve spent countless hours testing different strategies, locations, and techniques to bring you everything you need to know about Ruby Gemstones in Fish It.

Aspect	Details	Best Practice
Ruby Rarity	Legendary (1 in 15k)	Use Mutation Potion
Best Locations	Tropical Grove, Lost Isle	Fish in concentrated areas
Required Status	Mutated Only	Regular Ruby won’t work
Quest NPC	Larry (Mutation Cellar)	Level 5+ required
Best Rod	Element Rod	With Luck/Perfection enchants

What Are Ruby Gemstones in Fish It?

Ruby Gemstones are legendary items in Fish It that serve as crucial components for unlocking the Diamond Rod, currently the best fishing rod in the game. However, there’s a critical catch that many players miss: Larry the Scientist only accepts Ruby Mutated Gemstones, not regular Ruby Gemstones.

This distinction is vital because it changes your entire approach to farming. You can’t simply catch a Ruby and mutate it later – the mutation must occur during the catch itself. This is why so many players struggle with this quest even after catching multiple Ruby Gemstones.

Best Locations to Find Ruby Gemstones

Based on extensive testing and community data, here are the top locations for Ruby Gemstones farming:

1. Tropical Grove (Most Recommended)

Why it’s best: The lake on top of the hill has only one legendary fish (Ruby), making your chances much more concentrated. This location also offers safety and stability for long farming sessions.

Ruby Rate: Legendary (1 in 15k chance)

Additional Benefits: You can also catch the Great Whale here, which is another requirement for the Diamond Rod quest.

2. Lost Isle – Treasure Room & Sisyphus Statue

Why it’s effective: Both areas around the Treasure Room and Sisyphus Statue offer Ruby Gemstones with the same 1 in 15k drop rate, but with the added bonus of potentially catching other high-value items.

Ruby Rate: Legendary (1 in 15k chance)

Additional Benefits: Higher chance for other valuable items like Kraken, King Crab, and various legendary fish.

3. Ocean (Basic Location)

Why it’s less optimal: While Ruby Gemstones do appear here with the same 1 in 15k rate, the massive item pool makes random fishing inefficient and time-consuming.

Ruby Rate: Legendary (1 in 15k chance)

Recommendation: Only use this location if you’re specifically targeting other Ocean-exclusive fish.

How to Get Ruby Mutated Gemstones?

This is where most players go wrong. Here’s the step-by-step process to ensure you get the Mutated status:

Step 1: Preparation is Key

Essential Items:

• Mutation Potion (Non-negotiable for mutation chances)
• Element Rod (Minimum requirement)
• Luck Enchantment (Highly recommended)
• Perfection Enchantment (Helps with Perfect Throws)

Step 2: Use Mutation Potion

Before you even cast your line, drink a Mutation Potion. This significantly increases the chance that your catch will have the Mutated status. Without this potion, your chances of getting a Ruby Mutated Gemstone are extremely low.

Step 3: Optimize Your Rod Setup

Minimum Setup:

• Element Rod with Luck enchantment
• Add Perfection enchantment if possible

Ideal Setup:

• Element Rod with Leprechaun II (+50% luck)
• Mutation Hunter II (30% more mutation chance)
• These are the S-tier enchantments for Ruby farming

Step 4: Master Perfect Throws

Perfect Throws aren’t just a separate quest requirement – they’re believed to improve catch quality. Maintain consistent Perfect Throws during your farming sessions for the best results.

Complete Diamond Rod Quest Guide

The Ruby Mutated Gemstone is just one part of the Diamond Rod quest. Here’s everything you need to complete:

Quest Requirements:

1. Catch a Secret fish at Coral Reefs (Eerie Shark – 1 in 250k)
2. Catch a Secret fish at Tropical Grove (Great Whale – 1 in 900k)
3. Bring Larry a mutated Gemstone Ruby (1 in 15k + mutation)
4. Bring Larry a Lochness Monster (Secret rarity)
5. Catch 1000 fish using Perfect Throw

How to Start the Quest:

1. Reach Level 5 (Required for Mutation Cellar access)
2. Go to Fisherman Island
3. Find the Mutation Cellar (Opposite limited-time crates display)
4. Enter and talk to Larry the Scientist
5. Accept the Diamond Researcher Quest

Diamond Rod Stats (The Reward):

• Luck: 1300 (Highest in game)
• Reel Speed: 150%
• Weight Capacity: 800,000 kg
• Best Enchants: Mutation Hunter III and Leprechaun II

Advanced Ruby Farming Strategies

Strategy 1: The Tropical Grove Method

1. Position yourself at the hilltop lake
2. Use Mutation Potion before each session
3. Focus on Perfect Throws consistently
4. Fish in 30-minute sessions (Better than marathon sessions)
5. Track your catches to identify patterns

Strategy 2: The Lost Isle Approach

1. Alternate between Treasure Room and Sisyphus Statue
2. Use the fishing radar to find boosted areas
3. Target the concentrated fishing spots
4. Combine with other valuable fish farming

Strategy 3: The Enchantment Optimization

Best Enchantment Combinations:

• S-Tier: Leprechaun II (+50% luck) + Mutation Hunter II (30% mutation)
• A-Tier: Prismatic I + Empowered I
• Budget Option: Leprechaun I (+30% luck) + Mutation Hunter I (10% mutation)

Common Mistakes to Avoid

❌ Mistake 1: Not Using Mutation Potions

Many players waste hours fishing without Mutation Potions, wondering why they never get Mutated Ruby.

❌ Mistake 2: Wrong Rod Setup

Using starter rods or rods without proper enchantments significantly reduces your chances.

❌ Mistake 3: Ignoring Perfect Throws

Perfect Throws aren’t just for the quest – they improve your overall catch quality.

❌ Mistake 4: Wrong Locations

Fishing in the Ocean when you could be in Tropical Grove is inefficient.

❌ Mistake 5: Marathon Sessions

Short, focused sessions (30 minutes) are more effective than long, exhausting ones.

Enchantment System Deep Dive

How to Enchant Your Rod:

1. Visit Esoteric Depths island
2. Pay 400 coins to the Esoteric Gatekeeper
3. Take the elevator down
4. Find the enchantment altar under the waterfall
5. Hold your enchant stone and press E

Enchant Stone Farming:

• Best Location: Esoteric Depths
• Base Chance: 1 in 1000 on most islands
• Alternative: Buy for 29 Robux (normal) or 49 Robux (super)

Complete Enchantment Tier List:

S-Tier (Must-Have):

• Leprechaun II: +50% luck
• Mutation Hunter II: 30% more mutation chance

A-Tier (Excellent):

• Prismatic I: Rainbow boost activates with 10 less throws
• Empowered I: +20% luck, +10% faster reel
• Cursed I: -75% luck, +75% mutation chance
• Leprechaun I: +30% luck
• Gold Digger I: 10% chance to get Gold mutation

B-Tier (Good):

• XPerienced I: 1.5x more XP from all fish catches
• Mutation Hunter I: 10% more chance for mutation

C-Tier (Situational):

• Big Hunter I: Makes fish 10% bigger
• Stargazer I: +60% luck at night
• Stormhunter I: +80% luck during rain

D-Tier (Avoid):

• Glistening I: Increase chance of obtaining shiny fish by 10%
• Reeler I: Reel in fish +7% faster

Pro Tips from Experienced Players

💡 Tip 1: The Radar Advantage

Always use your fishing radar to find areas with boosted rates. These can significantly improve your Ruby chances.

💡 Tip 2: Time Your Sessions

Some players report better luck during specific in-game times or weather conditions. Experiment to find what works for you.

💡 Tip 3: The Multi-Location Strategy

Don’t stick to one location forever. Rotate between Tropical Grove and Lost Isle to keep the RNG fresh.

💡 Tip 4: Track Your Progress

Keep a log of your catches, locations, and results. This helps identify patterns and optimize your strategy.

💡 Tip 5: Join the Community

Follow Fish It developers and join community discussions for the latest updates on drop rates and new strategies.

Troubleshooting Common Issues

Issue: “I’ve caught 10+ Ruby but none are Mutated!”

Solution: You MUST use Mutation Potions before fishing. Regular Ruby cannot be mutated afterward.

Issue: “My Perfect Throws aren’t registering”

Solution: Ensure you’re using the correct timing. Practice makes perfect – watch tutorial videos if needed.

Issue: “I can’t find the Mutation Cellar”

Solution: It’s on Fisherman Island, opposite the limited-time crates display. You need to be Level 5+ to enter.

Issue: “Larry won’t accept my Ruby”

Solution: Double-check that it’s a “Ruby Mutated Gemstone” not just “Ruby Gemstone”. The mutation status is crucial.

Future Updates and Meta Changes

The Fish It developers frequently adjust drop rates and add new content. Here’s what to watch for:

• Potential new Ruby locations in future updates
• Mutation system changes that might affect farming strategies
• New enchantments that could improve Ruby farming
• Seasonal events that might boost Ruby drop rates

Always check the official Fish It social media and Discord server for the latest updates.

Frequently Asked Questions

Q: How long does it typically take to get a Ruby Mutated Gemstone?

A: With proper preparation (Mutation Potion, good rod, right location), most players report getting one within 2-4 hours of focused farming. Without proper preparation, it could take 20+ hours.

Q: Can I buy Ruby Mutated Gemstones?

A: No, Ruby Mutated Gemstones can only be obtained through fishing. They cannot be purchased from the in-game shop.

Q: Do I need to complete other quests first?

A: Yes, you need to be Level 5+ to access the Mutation Cellar where Larry gives the Diamond Rod quest.

Q: What’s the difference between Ruby and Ruby Mutated?

A: Ruby Mutated has the “Mutated” status and is required for the Diamond Rod quest. Regular Ruby cannot be used for this quest.

Q: Should I focus on Ruby or other quest requirements first?

A: I recommend working on multiple requirements simultaneously. While farming for Ruby at Tropical Grove, you can also work on catching the Great Whale.

Q: Are there any time-limited events that boost Ruby rates?

A: Check the official Fish It social media for current events. Developers occasionally run events that boost specific drop rates.

Q: What happens if I lose my Ruby Mutated Gemstone?

A: Unfortunately, you’ll need to farm another one. Always submit it to Larry immediately after getting it to avoid losing it.

Q: Can I trade Ruby Mutated Gemstones with other players?

A: No, Ruby Mutated Gemstones are untradeable items that must be obtained personally.

Conclusion

Getting the Ruby Mutated Gemstone in Fish It is challenging but definitely achievable with the right strategy. Remember these key points:

1. Always use Mutation Potions before fishing
2. Focus on Tropical Grove for the most efficient farming
3. Use the right rod setup with proper enchantments
4. Master Perfect Throws for better catch quality
5. Be patient – this is designed as an endgame challenge

The Diamond Rod is worth the effort with its incredible stats and abilities. Once you have it, you’ll be able to catch the rarest fish in the game with much greater success.