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Dave the Diveris all about progression. You first find the fish you need to sell to buy new gear which then lets you dive deeper to find better fish and rarer ingredients. Eventually, mere money won’t be enough to upgrade your harpoon gun and diving suit. You’ll need to find rare minerals like Aquamarine, Torbenite, and above all, Topaz.
Topaz is extremely important in Dave the Diver. You’ll need it to upgrade both theLarge Net Gun and the Hush Dart Gun, not to mention the fearsome Death Sniper Rifle. If you’re looking to upgrade your arsenal, here’s how you can find all the Topaz you’ll ever need.

Where To Find Topaz In Dave The Diver
Topaz is found inonly one spot in the game:the Glacial Area. You’ll reach the Glacial Areain chapter sixnear the end of the game, so it’s not a bad idea to put the story progression on hold in order to explore this frozen area.
In order to explore the Glacial Area,you’ll need to have unlocked the Cold-Resistant Diving Suit. You’ll get this after infiltrating the Sea Blue base and retrieving the Tech Suit Part for Dr. Bacon.

There aresix spots where Topaz can spawn in the Glacial Area. Three are on the left side of the map in the frozen maze. The other three spots are on the right side of the map on several jutting cliff faces.
Themiddle part of the Glacial Areais just open water filled with sharks, narwhals, and fish,without any harvestable minerals.

A good way to check every potential spot where Topaz can spawn is tofirst swim to the left sideto thoroughly scour the frozen maze,then swim to the right sideof the map to check the cliffs, harvesting high-tier fish for your sushi restaurant along the way.
These spots don’t always spawn Topazor other harvestable minerals on every dive. You can probably expect four out of the six spots to have a harvestable ore vein on any given dive.
What You Need To Harvest Topaz
You’ll need several items to harvest Topazin the Glacial area. The required items are listed below.
TheCold-Resistant Diving Suitis obtained as part of the opening missions of chapter six. You’ll need to infiltrate the Sea Blue base to retrieve the Tech Suit Part for Dr. Bacon.
APickaxecan potentially befound in any of the yellow casesscattered across the map. It’s possible to find a Pickaxe in the yellow cases found on the left or right sides of the Glacial Area, or in the preceding areas before reaching theSea People Village.
However,the best way to mine materialsconsistently is toupgrade the Dive Knife to level three. This will require spending $3,000 on the level two upgrade, and a further $7,200 upgrading the Dive Knife to level three, for a total of $10,200.
You canupgrade your Diving Equipment via the iDiver appon your in-game smartphone.
What You Can Make With Topaz In Dave The Diver
You’ll need Topaz to make several high-level weaponsin Dave the Diver. Here is a list of weapons that require Topaz and how many Topaz you’ll need to craft them.
25
20
Modified Hush Dart
TheSteel Net Gunand theModified Hush Dartare bothgreat weapons for capturing high-level fish. Many fish in the Glacial area are difficult to catch with the Harpoon Gun, and even if you do, they won’t be at a full three-star quality. Use the Steel Net Gun to capture groups of them alive, then use the drone to take them back to your fish tank.
TheDeath Sniper Rifleis alsoextremely helpful against certain boss enemies, such as theGreat White Shark Klausand theHelicorpion.