Old School RuneScape: 10 Hours of Gemstone Crab - A Complete Guide

Welcome adventurers! Today we dive into one of Old School RuneScape's newest additions-the Gemstone Crab, introduced with Varlamore: The Final Dawn. This guide will walk you through everything you need to know to fight, profit, and train efficiently with this new mid-level, AFK-friendly boss. Whether you're a seasoned veteran or someone looking to jump right into the action with a high-level character, many players choose to buy OSRS Accounts to skip early grinding and experience content like the Gemstone Crab right away.

Access and Requirements

To face the Gemstone Crab, you must complete the quest "Children of the Sun" to unlock access to the Varlamore rainforest. The crab spawns in three locations within the rainforest. If you arrive at a location and don't see it, simply crawl through a nearby cave-the crab will be waiting on the other side, ready for battle.

 

How the Gemstone Crab Works

This unique boss operates on a 10-minute timer rather than a traditional health bar. While it visually displays an HP bar, this only reflects how much time is left before it burrows and relocates. Once the timer runs out, the crab disappears underground and respawns elsewhere. After this, you'll need to enter another cave to find and fight it again.

You'll earn 87.5% of normal combat XP per hit, making each point of damage worth 3.5 experience. What sets this crab apart from Rock and Sand Crabs is no downtime-you deal constant damage with no wasted XP due to overkill.

 

Loot and Rewards

Defeating the crab gives the top 16 damage dealers the chance to mine its remains for three random uncut gems. These can include opal, jade, topaz, sapphire, emerald, ruby, and even dragonstone-although the latter is rare. Bring a gem bag, but no mining gear is needed. Note that no mining XP is awarded, just the gems.

If you fail to be in the top 16 for damage, you'll see a chat message: "Your understanding of the gemstone crab is not good enough."

 

Combat and Strategy

The Gemstone Crab does not hit hard-in fact, it rarely hits at all. This makes it a perfect AFK boss for low and mid-level players. Even high-level accounts might find it relaxing for casual XP gains. You'll see all kinds of players here-from those with rune scimitars and frog masks to others wielding scythes and soul reaper axes.

While you can train any combat style here, melee is most efficient, especially with weapons that emphasize strength XP. The crab offers consistent AFK training with no danger, making it a new favorite for many.

 

XP Per Hour Testing -10 Setups Tried

To maximize your XP, various weapons and strategies were tested over 10 hours:

· Fang + Piety: About 115k Strength XP/hour

· Rapier + Piety: Around 137k Strength XP/hour

· Fang, No Piety: Around 95k Strength XP/hour

· Rapier, No Piety: Roughly 106k Strength XP/hour

· Dragon Scimitar: Estimated 100k Strength XP/hour

· Abyssal Whip (Attack XP): About 106k XP/hour

· Zombie Axe: Around 95k Strength XP/hour

· Full Obsidian + Berserker Necklace: Approximately 110k XP/hour

· Saradomin Sword: About 100k Strength XP/hour

· Dharok's at 1 HP: One of the highest XP rates; 200m Strength XP was achieved during this hour, showing its efficiency.

All XP rates are approximate and vary based on setup and AFK levels.

 

Profit and Gem Haul

Over 10 hours, loot totaled about 153k in uncut gems. Despite being named the Gemstone Crab, many players are surprised by the low value of gems, but the XP rates more than compensate. Plus, the variety of gems benefits Ironmen and early-game players.

 

Community, Fun, and Final Thoughts

Perhaps the most enjoyable aspect of the Gemstone Crab is the community interaction. You'll see dozens of players training, chatting, and sharing strategies in a laid-back, nostalgic RuneScape environment. Whether you're chasing max XP or casually training, the crab offers a stress-free experience with minimal gear requirements. For those who want to reach high combat levels quickly and efficiently, using an OSRS Power Leveling Service can be a helpful option to get straight into content like this without the grind.

The update was praised for revitalizing the lower to mid-level game with a fresh, engaging boss. It's an activity that anyone can access, and with no serious risk, it's easy to see why it's become a favorite.

In closing, the Gemstone Crab isn't about massive profits-it's about consistent XP, easy gameplay, and community fun. If you're looking to train combat skills or just enjoy 10-minute AFK sessions, this is your new go-to.

Happy grinding, and may your gem bags be full-even if they're only worth 153k.

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