Briquette shape is not only visual. It affects dimensions, packing configuration and how the buyer positions the product for shisha, BBQ or cooking use.
Start from the application
Compact cubes and rectangles are common in shisha-oriented orders, while larger cuboid and hexagonal formats can suit BBQ and cooking requirements.
The right starting question is not which shape looks best, but how the end customer will use it.
Then define the specification
Once the application is clear, align the diameter, length, moisture, ash, fixed carbon target, packaging and sample approval criteria.