Crocodile, alligator and caiman are often used interchangeably in the strap market, but they are 3 different animal species with leathers that vary greatly in quality, price and regulation. Knowing the difference is fundamental to avoid making the wrong purchase. Let me explain in practical terms what changes between the three.
1. Alligator Mississippiensis (USA)
The alligator lives mainly in Louisiana and Florida. Controlled farming since 1970 thanks to US conservation programs. The leather: large, regular rectangular ventral scales, perfect symmetry along the axis, no visible sensory line pores. Tanning traditionally American but also Italian and French.
Quality: top of the range for luxury straps. Softness, symmetry, durability. Strap cost: 350-800 euros. Always with CITES Appendix II.
2. Crocodylus (crocodile)
Three main species in the luxury market: Crocodylus Niloticus (Africa, from the Nile to the Sahel), Crocodylus Porosus (Pacific, Australia, Southeast Asia — the most prized), Crocodylus Siamensis (Asia, most widespread farming).
Distinguishing feature: scales smaller than the alligator’s, with the presence of ISO sensory line pores — tiny black dots aligned along the edges of the scales. These are natural sensory pores, not defects: they identify the Crocodylus species. Porosus has square, symmetrical scales (similar to alligator but with the pores); Niloticus has more irregular scales.
Quality: top of the range, comparable to alligator. Porosus is the most expensive. Strap cost: 400-1200 euros. Always with CITES Appendix II.
3. Caiman (South America)
Caiman is a sub-family of South American alligators — it is not an “alligator”. The commercial species are Caiman crocodilus and Caiman yacare. Distinctive leather: scales with a clearly visible central ossified depression (the “rosette”), which alligators and crocodiles do not have. Scales smaller and more irregular than the alligator’s.
Quality: medium. More affordable but also stiffer and less durable. Tanning is more difficult due to the ossification. Tends to crack within 2-3 years of daily use. Strap cost: 80-200 euros. CITES Appendix II.
How to recognize them at a glance
| Feature | Alligator | Crocodile | Caiman |
|---|---|---|---|
| ISO sensory pores | Absent | Present ✓ | Absent |
| Ossified rosette | Absent | Absent | Present ✓ |
| Ventral scales | Large, symmetrical | Variable by species | Small, irregular |
| Softness to the touch | Very soft | Soft | Stiff |
| Strap price | 350-800 € | 400-1200 € | 80-200 € |
Which to choose
For a high-end watch worn daily: alligator or Porosus crocodile. Same top quality, perfect symmetry, 8-12 years of durability. The choice depends on cut availability (alligator with belly cut is rarer) and aesthetic preference (crocodile pores are visible even from a distance).
For a second “casual” strap or for sports watches: Niloticus crocodile in matte finish, more contained in price. I do not recommend caiman: the investment in a luxury watch does not match a strap that deteriorates within a few years.
All exotic leathers require mandatory CITES. Without CITES, do not buy. In the Casati Milano atelier we work only with CITES-certified Mississippiensis alligator and certified Porosus crocodile. If you wish to compare the leathers in person, visit the atelier — by appointment only.