Table: Armor (Chrono Trigger) General

Armor
Type
Defense
Obtain
Effect
Sell
Aeon Suit
All
75
Last Village - 9000g/Ocean Palace - Chest/Sunken Desert - Chest
4500g
Black Mail
All
70
Porre Mayor's Manor - Sealed Chest/Son of Sun - Charm
Absorbs Shadow damage
4100g
Blue Mail
All
70
MotherBrain - Charm/Truce Inn, 1000 A.D. - Sealed Chest
Absorbs Water damage
4100g
Black Vest
All
45
Porre Elder's House - Sealed Chest
Cuts Shadow damage by 50%
2900g
Blue Vest
All
45
Truce Inn, 600 A.D. - Sealed Chest
Cuts Water damage by 50%
2900g
BronzeMail
Males
16
Guardia Castle, 600 A.D. - Chest/Guardia Castle, 1000 A.D. - Chest/Porre Market, 1000 A.D. - 520g/Truce Market, 1000 A.D. - 520g
268g
Dark Mail
Males
45
Magus's Lair - Chest
Magic Defense +5
1900g
Dragon Armor
Males
83
Lost Sanctum - Chest, 15000g
Strength +10
7500g
Elemental Aegis
Lucca
92
Lost Sanctum - Give Lumicite Shard to smithy
Elemental immunity
N/A
Flash Mail
Males
64
Algetty - 8500g/Medina Market - 6342g
4250g
Gloom Cape
Magus
84
Ozzie's Fort - Chest
8200g
Gold Suit
All
39
Denadoro Mts - Chest/Porre Market, 600 A.D. - 1300g
650g
Hide Tunic
All
5
Crono and Marle's default armor
40g
Iron Suit
All
25
Trann Dome - 800g
400g
Karate Gi
All
10
Lucca's default armor/Millennial Fair - 300g/Porre Market, 1000 A.D. - 300g/Truce Market, 600 A.D. - 300g
150g
Lode Vest
All
71
Mt. Woe - Chest/Zeal Palace - 8500g
4250g
Lumin Robe
Females
63
Algetty - 6500g/Arris Dome - Sealed Room/Medina - 4850
3250g
MaidenSuit
Females
18
Cathedral - Chest/Truce Market, 1000 A.D. - 560g
280g
Meso Mail
All
52
Dactyl Nest - Chest/Tyrano Lair - Chest
3000g
Mist Robe
Females
54
Magus's Lair - 2 Chests
3400g
Moon Armor
Males
85
Northern Ruins, 1000 A.D. - Sealed Chest
Magic Defense +10
6500g
Nova Armor
Males
82
Black Omen - Chest/Goon - Charm/Northern Ruins, 600 A.D. - Sealed Chest
Protects Status
5500g
PrismDress
Females
99
Complete the Sun Stone Sidequest/Zeal (left hand) - Charm
Cuts all elemental damage by 1/3
4400g
RavenArmor
Magus
76
Magus's default armor
7900g
Red Mail
All
70
Guardia Castle, 1000 A.D. - Sealed Chest/Rust Tyrano - Charm
Absorbs Fire damage
4100g
Red Vest
All
45
Guardia Castle, 600 A.D. - Sealed Chest
Cuts Fire damage by 50%
2900g
Regal Gown
Females
90
Dimensional Vortex - Chest
Auto-Protect, Auto-Barrier
N/A
Regal Plate
Males
88
Dimensional Vortex - Chest
Stamina +10, Magic Defense +10
N/A
Reptite Dress
Females
82
Lost Sanctum - 14000g, Chest
Magic +10
7000g
Ruby Armor
All
78
Ioka Trading Hut - 10 Fangs, 10 Feathers, 10 Horns, 10 Petals (Added after Ocean Palace Incident)
Cuts Fire damage by 80%
7000g
Ruby Vest
All
45
Ioka Trading Hut - 3 Fangs, 3 Feathers (Before Ocean Palace Incident)/Reptite Lair - 2 Chests
Cuts Fire damage by 50%
1800g
Saurian Leathers
All
88
Lost Sanctum - Help the bridge builder
Speed +3, Strength +3
8000g
Shadowplume Robe
All
90
Dimensional Vortex - Chest
Auto-Barrier, Magic Defense +20
Can't sell
Taban Suit
Lucca
79
Visit Taban after receiving the Epoch
Cuts Fire damage by 90%, Speed +3
Taban Vest
Lucca
33
Visit Taban after visiting 2300 A.D.
Cuts Fire damage by 50%, Speed +2
Titan Vest
All
32
Factory - Chest/Melchior's Hut - 1200g
600g
White Mail
All
70
Porre Mayor's Manor - Sealed Chest/Yakra XIII - Charm
Absorbs Lightning damage
4100g
White Vest
All
45
Porre Elder's House, 600 A.D. - Sealed Chest
Cuts Lightning damage by 50%
2900g
ZodiacCape
Females
80
Black Omen - Chest/Giant's Claw - Chest
Magic Defense +10
5000g

From: Armor (Chrono Trigger)