Dive into Adventure!
Explore the Neptune Discovery Lab

Uncover underwater secrets with this 513-piece LEGO Aquanauts set from 1995! Perfect for nostalgic builders and ocean explorers.

🏛 Aquanauts
Set #6195

Neptune Discovery Lab

The Neptune Discovery Lab is a classic underwater exploration set.

🏆 Best For: Ideal for LEGO fans who enjoy classic themes and underwater adventures ⏱ 4.5 hr build 🧩 509 pcs
★★★★☆ 4.1

Fans praise the Neptune Discovery Lab for its unique design and nostalgic value, capturing the essence of classic LEGO underwater themes. Some find the color scheme a bit dated, but appreciate the play features and the inclusion of multiple minifigures.

📝 Our Take

The Neptune Discovery Lab is a classic underwater exploration set. Released in 1995 as part of the Aquanauts theme, it features a detailed research base and a submersible for exploring the ocean depths, capturing the adventurous spirit of LEGO's undersea adventures.

This set is perfect for LEGO enthusiasts who appreciate vintage themes and imaginative play. The build is engaging with its unique octagonal structures and underwater vehicles, offering a nostalgic experience for older fans and a creative playset for younger builders.

Skip this if you prefer modern, highly detailed sets with complex building techniques. While charming, the Neptune Discovery Lab lacks the sophistication of contemporary LEGO models; consider newer underwater-themed sets like those from the City or Creator lines for advanced builds.

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How does the Neptune Discovery Lab compare to other Aquazone sets in terms of design and playability? What are the best ways to display this set to highlight its underwater theme? How has the value of this set changed over time, and what factors influence its collectibility? Are there any common modifications or upgrades that enhance the set's appearance or functionality?

🧱 Building Experience

🧩
509
Pieces
4.5h
Build Time
📊
Intermediate
Difficulty
Build Highlights:
  • Unique octagonal building design
  • Submersible vehicle construction
  • Use of transparent orange elements for visual appeal
  • Integrated play features for underwater exploration

📈 Investment Analysis

→ Price stable
B
Investment Grade
⏳ Active
The Neptune Discovery Lab presents a moderate investment opportunity. As a set from the mid-90s Aquanauts theme, it benefits from nostalgia among older LEGO fans. Its rarity and complete condition can drive up its value on the secondary market. However, its investment potential is somewhat tempered by the fact that it's not a licensed theme and the piece count is moderate. Over time, well-preserved sets should see appreciation, but returns may not be as high as more iconic themes or limited-edition sets. Proper storage and documentation will be key to maximizing its value.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

Compare Similar Sets

Compared to modern underwater-themed sets, the Neptune Discovery Lab offers a simpler, more classic LEGO building experience. While sets like the LEGO City Deep Sea Explorers offer more advanced building techniques and detailed minifigures, the Neptune Discovery Lab appeals to collectors seeking nostalgia. It provides a more straightforward build and focuses on imaginative play, making it a unique addition to any collection.

3 Minifigures Included

The set includes four Aquanaut minifigures, each equipped with scuba gear and the Aquanauts logo, enhancing the underwater exploration theme. These figures are exclusive to the Aquazone subthemes, increasing their collectibility.

📦 Full Parts Inventory - 149 unique parts • 468 total pieces

Minifig Hose Nozzle Simple with 13L Black String Minifig Hose Nozz...
Part #: 194c04 Light Gray
Flag 2 x 2 Square [Thin Clips] Flag 2 x 2 Square...
Part #: 2335 Yellow
Panel 3 x 3 x 6 Corner Wall Panel 3 x 3 x 6 C...
Part #: 2345 Yellow
Brick 2 x 2 Corner Brick 2 x 2 Corner
Part #: 2357 Black
Brick 2 x 2 Corner Brick 2 x 2 Corner
Part #: 2357 Yellow
Panel 10 x 6 x 11 Panel 10 x 6 x 11
Part #: 2408 Trans-Dark Blue
Tile Special 1 x 2 Grille without Bottom Groove Tile Special 1 x ...
Part #: 2412a Yellow
Tile Special 1 x 2 Grille with Bottom Groove Tile Special 1 x ...
Part #: 2412b 11× Black
Windscreen 6 x 6 Octagonal Canopy with Axle hole Windscreen 6 x 6 ...
Part #: 2418b Trans-Dark Blue
Wedge Plate 3 x 6 Cut Corners Wedge Plate 3 x 6...
Part #: 2419 Black
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 Black
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 Yellow
Tile 1 x 4 with Groove Tile 1 x 4 with G...
Part #: 2431 Black
Tile Special 1 x 2 with Handle Tile Special 1 x ...
Part #: 2432 Yellow
Brick Special 2 x 4 x 2 with Studs on Sides Brick Special 2 x...
Part #: 2434 Yellow
Slope Inverted 75° 2 x 1 x 3 Slope Inverted 75...
Part #: 2449 Black
Wedge Plate 3 x 3 Cut Corner Wedge Plate 3 x 3...
Part #: 2450 Black
Tile Special 2 x 2 with Top Pin Tile Special 2 x ...
Part #: 2460 Yellow
Brick 1 x 16 Brick 1 x 16
Part #: 2465 Yellow
Plate Special 1 x 2 Side Handle [Free Ends] Plate Special 1 x...
Part #: 2540 Black
Antenna 8H Whip Antenna 8H Whip
Part #: 2569 Trans-Neon Orange
Hinge Panel 2 x 4 x 3 1/3 Hinge Panel 2 x 4...
Part #: 2582 Trans-Dark Blue
Hinge Panel 2 x 4 x 3 1/3 with Yellow Submarine Print Hinge Panel 2 x 4...
Part #: 2582pr0006 Yellow
Door 1 x 9 x 11 with Clips Door 1 x 9 x 11 w...
Part #: 2596 Trans-Dark Blue
Windscreen 10 x 10 x 4 Octagonal Canopy Windscreen 10 x 1...
Part #: 2598 Trans-Dark Blue
Magnet Holder 2 x 3 Magnet Holder 2 x 3
Part #: 2607 Black
Magnet Holder Tile 2 x 2 - Short Arms Magnet Holder Til...
Part #: 2609a Black
Cockpit 10 x 10 x 4 Octagonal Cockpit 10 x 10 x...
Part #: 2618 Yellow
Plate 4 x 4 Corner Plate 4 x 4 Corner
Part #: 2639 Black
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 Black
Door Frame 2 x 8 x 12 with Hinges Door Frame 2 x 8 ...
Part #: 2662 Yellow
Technic Slope Long 1 x 6 with 3 Pin Holes Technic Slope Lon...
Part #: 2744 Black
Technic Engine Crankshaft Center Technic Engine Cr...
Part #: 2854 Light Gray
Arm Holder Brick 1 x 2 with 2 Horizontal Fingers Arm Holder Brick ...
Part #: 30014 Black
Brick 2 x 2 Brick 2 x 2
Part #: 3003 Yellow
Brick 2 x 2 Brick 2 x 2
Part #: 3003 Black
Brick 1 x 2 Brick 1 x 2
Part #: 3004 13× Yellow
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Black
Brick 1 x 1 Brick 1 x 1
Part #: 3005 Yellow
Brick 2 x 10 Brick 2 x 10
Part #: 3006 Yellow
Brick 1 x 8 Brick 1 x 8
Part #: 3008 Yellow
Brick 1 x 8 Brick 1 x 8
Part #: 3008 Black
Brick 1 x 6 Brick 1 x 6
Part #: 3009 Black
Brick 1 x 4 Brick 1 x 4
Part #: 3010 Yellow
Brick 1 x 4 Brick 1 x 4
Part #: 3010 Black
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Black
Plate 2 x 3 Plate 2 x 3
Part #: 3021 Yellow
Plate 2 x 3 Plate 2 x 3
Part #: 3021 Black
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Yellow
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Yellow
Plate 1 x 2 Plate 1 x 2
Part #: 3023 15× Black
Plate 1 x 1 Plate 1 x 1
Part #: 3024 Yellow
Plate 6 x 12 Plate 6 x 12
Part #: 3028 Black
Plate 4 x 4 Plate 4 x 4
Part #: 3031 Black
Plate 4 x 6 Plate 4 x 6
Part #: 3032 Black
Plate 4 x 6 Plate 4 x 6
Part #: 3032 Yellow
Plate 2 x 8 Plate 2 x 8
Part #: 3034 Yellow
Plate 4 x 8 Plate 4 x 8
Part #: 3035 Black
Slope 45° 2 x 4 Slope 45° 2 x 4
Part #: 3037 Yellow
Rock 1 x 1 Crystal 5 Point Rock 1 x 1 Crysta...
Part #: 30385 Chrome Silver
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 Yellow
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 Black
Slope 45° 2 x 2 with Grid Screen, Shark, and Controls on Red Panel Print (Aquazone) Slope 45° 2 x 2 w...
Part #: 3039pr9980 Yellow
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Yellow
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Black
Slope 45° 2 x 1 with Bottom pin, with 3 Red Lamps, 3 Yellow Buttons, Yellow Border print Slope 45° 2 x 1 w...
Part #: 3040bpr0008 Black
Brick Round 1 x 1 Open Stud Brick Round 1 x 1...
Part #: 3062b 13× Yellow
Tile 1 x 2 with Groove Tile 1 x 2 with G...
Part #: 3069b Yellow
Tile 1 x 2 with Groove Tile 1 x 2 with G...
Part #: 3069b Black
Tile 1 x 2 with Long Black Arrow Print Tile 1 x 2 with L...
Part #: 3069bpr0035 Yellow
Tile 1 x 2 with Underwater Navigation Print Tile 1 x 2 with U...
Part #: 3069bpr0093 Yellow
Tile 1 x 1 with Groove Tile 1 x 1 with G...
Part #: 3070b Black
Tile 1 x 1 with Red and Black Buttons Print Tile 1 x 1 with R...
Part #: 3070bpr0031 Yellow
Slope 33° 3 x 4 Slope 33° 3 x 4
Part #: 3297 Yellow
Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside Brick Arch 1 x 6 ...
Part #: 3307 Yellow
Turntable 4 x 4 Square Base Turntable 4 x 4 S...
Part #: 3403 Black
Turntable 4 x 4 Top Turntable 4 x 4 Top
Part #: 3404 Black
Plate 1 x 8 Plate 1 x 8
Part #: 3460 Yellow
Plate Special 2 x 5 with Towball Socket Plate Special 2 x...
Part #: 3491 Black
Crane Bucket [Complete Assembly] Crane Bucket [Com...
Part #: 3492c01 Trans-Dark Blue
Arm Piece Straight with 2 and 3 Fingers Arm Piece Straigh...
Part #: 3612 Black
Arm Piece Straight with 2 and 3 Fingers Arm Piece Straigh...
Part #: 3612 Yellow
Brick 1 x 3 Brick 1 x 3
Part #: 3622 Yellow
Plate 1 x 3 Plate 1 x 3
Part #: 3623 Yellow
Fence Lattice 1 x 4 x 1 Fence Lattice 1 x...
Part #: 3633 Black
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Slope Inverted 45...
Part #: 3660 Yellow
Slope Inverted 45° 2 x 1 Slope Inverted 45...
Part #: 3665 Yellow
Slope Inverted 45° 2 x 1 Slope Inverted 45...
Part #: 3665 Black
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Yellow
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 Light Gray
Weapon Dagger / Knife Weapon Dagger / K...
Part #: 37 Chrome Silver
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Yellow
Technic Brick 1 x 4 [3 Pin Holes] Technic Brick 1 x...
Part #: 3701 Black
Technic Brick 1 x 8 [7 Pin Holes] Technic Brick 1 x...
Part #: 3702 Black
Technic Axle 2 Technic Axle 2
Part #: 3704 Black
Technic Axle 4 Technic Axle 4
Part #: 3705 Black
Technic Axle 6 Technic Axle 6
Part #: 3706 Black
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Black
Technic Link Technic Link
Part #: 3711a Black
Technic Bush Technic Bush
Part #: 3713 Light Gray
Plate Special 2 x 2 with Towball Socket, Short, 4 Slots Plate Special 2 x...
Part #: 3730 Yellow
Plate 2 x 2 with Towball Plate 2 x 2 with ...
Part #: 3731 Yellow
Technic Axle Pin without Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 3749 Light Gray
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Black
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Yellow
Steering Stand 1 x 2 with Black Steering Wheel Steering Stand 1 ...
Part #: 3829c01 Yellow
Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Plate Special 1 x...
Part #: 3839b Black
Hinge Brick 1 x 2 Base Hinge Brick 1 x 2...
Part #: 3937 Black
Hinge Brick 1 x 2 Base Hinge Brick 1 x 2...
Part #: 3937 Yellow
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Black
Plate 6 x 6 Plate 6 x 6
Part #: 3958 Black
Technic Gear 16 Tooth with Round Holes [Old Style] Technic Gear 16 T...
Part #: 4019 Light Gray
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a Black
Brick Special 1 x 1 with Headlight Brick Special 1 x...
Part #: 4070 Black
Brick Special 1 x 1 with Headlight Brick Special 1 x...
Part #: 4070 Trans-Neon Orange
Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Plate Special 1 x...
Part #: 4085c Black
Arm Piece 90° Turn [2 / 3 Fingers] Arm Piece 90° Tur...
Part #: 412 Trans-Neon Orange
Tile Round 2 x 2 with Black Background, Yellow Submarine Print Tile Round 2 x 2 ...
Part #: 4150pr0029 Yellow
Slope 33° 3 x 3 Slope 33° 3 x 3
Part #: 4161 Black
Hinge Vehicle Roof 4 x 4 Hinge Vehicle Roo...
Part #: 4213 Black
Arm Grab Jaw Holder, 3 Fingers Arm Grab Jaw Hold...
Part #: 4220 Yellow
Arm Grab Jaw Arm Grab Jaw
Part #: 4221 Black
Technic Bush 1/2 Toothed Type II [X Opening] Technic Bush 1/2 ...
Part #: 4265b Light Gray
Plate 2 x 16 Plate 2 x 16
Part #: 4282 Black
Slope 33° 3 x 1 Slope 33° 3 x 1
Part #: 4286 Yellow
Slope 33° 3 x 1 Slope 33° 3 x 1
Part #: 4286 Black
Hinge Vehicle Roof Holder 1 x 4 Hinge Vehicle Roo...
Part #: 4315 Yellow
Hinge Vehicle Roof Holder 1 x 4 Hinge Vehicle Roo...
Part #: 4315 Black
Box 2 x 2 x 2 [Hollow Studs] Box 2 x 2 x 2 [Ho...
Part #: 4345b Trans-Neon Orange
Box 2 x 2 x 2 Door with Slot Box 2 x 2 x 2 Doo...
Part #: 4346 Trans-Neon Orange
Slope 45° 2 x 8 Slope 45° 2 x 8
Part #: 4445 Yellow
Slope 75° 2 x 1 x 3 with Open Stud Slope 75° 2 x 1 x...
Part #: 4460a Black
Technic Axle 3 Technic Axle 3
Part #: 4519 Black
Plate Special 1 x 4 Offset with Bar Holes Plate Special 1 x...
Part #: 4590 Black
Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Plate Special 1 x...
Part #: 4623 Yellow
Hinge Tile 1 x 4 Hinge Tile 1 x 4
Part #: 4625 Black
Bar 1 x 3 [Clip / Anti-Stud] Bar 1 x 3 [Clip /...
Part #: 4735 Black
Wedge Plate 3 x 4 without Stud Notches Wedge Plate 3 x 4...
Part #: 4859 Black
Panel 1 x 2 x 2 [Solid Studs] Panel 1 x 2 x 2 [...
Part #: 4864a Trans-Dark Blue
Panel 1 x 2 x 1 [Square Corners] Panel 1 x 2 x 1 [...
Part #: 4865a Yellow
Panel 1 x 2 x 1 [Square Corners] Panel 1 x 2 x 1 [...
Part #: 4865a Black
Weapon Harpoon [4 Grooves on Shaft] Weapon Harpoon [4...
Part #: 57467 Chrome Silver
Minifig Footwear Flipper [Thin] Minifig Footwear ...
Part #: 59275 Blue
Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Plate Special 1 x...
Part #: 6019 Black
Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] Bar 7 x 3 with Do...
Part #: 6020 Black
Baseplate Raised 32 x 32 Canyon with Blue Underwater Print Baseplate Raised ...
Part #: 6024pr0001 Light Blue
Brick Special Octagonal 2 x 3 x 1 2/3 Sloped Brick Special Oct...
Part #: 6032 Yellow
Brick Special Octagonal 2 x 2 x 3 1/3 Brick Special Oct...
Part #: 6037 11× Yellow
Cone 2 x 2 x 1 2/3 Octagonal, Open Stud Cone 2 x 2 x 1 2/...
Part #: 6039 Yellow
Propeller Housing Propeller Housing
Part #: 6040 Yellow
Propeller 3 Blade 3 Diameter with Axle Cross Propeller 3 Blade...
Part #: 6041 Trans-Neon Orange
Brick Special Octagonal 2 x 2 x 3 1/3 with Side Studs Brick Special Oct...
Part #: 6042 Yellow
Brick Special Octagonal 2 x 2 x 3 1/3 Corner Brick Special Oct...
Part #: 6043 Yellow
Slope 53° 3 x 1 x 3 1/3 with Studs on Slope Slope 53° 3 x 1 x...
Part #: 6044 Yellow
Bar 9 x 13 Grille Bar 9 x 13 Grille
Part #: 6046 Yellow
Plate Special 10 x 10 Octagonal Opening Plate Special 10 ...
Part #: 6063 Yellow
Plant, Bush 2 x 2 x 4 Plant, Bush 2 x 2...
Part #: 6064 Green
Plant, Prickly Bush 2 x 2 x 3 Extension with 2 x 2 center Plant, Prickly Bu...
Part #: 6065 Red
Plant, Prickly Bush 2 x 2 x 3 Extension with 2 x 2 center Plant, Prickly Bu...
Part #: 6065 Green
Windscreen 8 x 3 1/2 x 4 1/6 Half Octagon Aquanaut Sub Top Windscreen 8 x 3 ...
Part #: 6084 Trans-Dark Blue
Cockpit 5 x 8 x 3 (Windscreen Bottom) Cockpit 5 x 8 x 3...
Part #: 6085 Trans-Dark Blue
Animal, Octopus [Plain] Animal, Octopus [...
Part #: 6086 Black
Bracket 5 x 2 x 2 1/3 with Holes, Smooth Bottom Bracket 5 x 2 x 2...
Part #: 6087 Black
Hinge Brick 2 x 2 Top Plate Thin Hinge Brick 2 x 2...
Part #: 6134 Red
Bar 1 x 6 [Closed Studs] Bar 1 x 6 [Closed...
Part #: 6140 Black
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Trans-Neon Orange
Arm Piece with Pin, 3 Fingers Arm Piece with Pi...
Part #: 6217 Yellow
Brick Special 2 x 2 with Pin and Axle Hole Brick Special 2 x...
Part #: 6232 Yellow
Equipment Compass with White Lines, Yellow Letters print Equipment Compass...
Part #: 70001pr0001 Black
Magnet Cylindrical Magnet Cylindrical
Part #: 73092 Black
The set includes a good selection of yellow and black parts, with several octagonal bricks that are unique to this theme. The trans-neon orange propellers add a vibrant touch and are useful for creating underwater vehicles.

💎 Notable Parts

Black Tile Special 1 x 2 Grille with Bottom Groove (11x) $2.20
Yellow Brick Special Octagonal 2 x 2 x 3 1/3 (11x) $3.30
Trans-Neon Orange Propeller 3 Blade 3 Diameter with Axle Cross (8x) $4.00
Yellow Brick Special Octagonal 2 x 2 x 3 1/3 Corner (7x) $2.10
Black Plate Special 1 x 1 with Clip Vertical [Thick U Clip] (7x) $3.50
Est. BrickLink Part Value
$15.10

💡 MOC Potential

🚢 Create a larger underwater research vessel
🏙 Expand into a full underwater city layout
🌳 Build detailed coral reef environments

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Charts Inventory Statistics

149
Unique Parts
468
Total Pieces
4
Minifigures
Inventory Version: 1