Rift Armor Set can be purchased from Relic Appraiser (cmd_fild07 57, 274) for   Shattered Magic Stone (6905) each.
Shattered Magic Stone (6905) dropping in the Infinite Space - Instance.

Item	Description
Ancient Decoration of Rift [1] (19033)	A hairband obtained from infinite space that emanating strange aura. ─────────── MaxHP +1000 ─────────── Refine Level +7: MaxHP +400 ─────────── Refine Level +9: MaxHP +600 ─────────── Type: Armor Position: Head Top Defense: 2 Armor Level: 1 Refinable Weight: 20 Required Level: 100
Rift Ancient Armor [1] (15141)	A suit of armor obtained from infinite space that emanating strange aura. ─────────── MaxHP +1000 MaxSP -100 ─────────── Refine Level +7: MaxHP +400 ─────────── Refine Level +9: MaxHP +600 ─────────── When equipped with Ancient Decoration of Rift: MaxSP +100 Protects from skill cast interruption. ─────────── When equipped with Ancient Decoration of Rift, Rift Manteau and Rift Shoes: MaxHP +1000 Increases recovery amount gained from Healing skills by 5%. Additional healing increased depend on total sum of Refine set. (up to +30 total Refine Level) ─────────── Type: Armor Position: Armor Defense: 30 Armor Level: 1 Refinable Weight: 50 Required Level: 100
Rift Manteau [1] (20779)	A cloak obtained from infinite space that emanating strange aura. ─────────── MaxHP +300 MaxSP -50 ─────────── Refine Level +7: MaxHP +400 ─────────── Refine Level +9: MaxHP +600 ─────────── Type: Armor Position: Garment Defense: 16 Armor Level: 1 Refinable Weight: 50 Required Level: 100
Rift Shoes [1] (22075)	A shoes obtained from infinite space that emanating strange aura. ─────────── MaxHP +300 MaxSP -50 ─────────── Refine Level +7: MaxHP +400 ─────────── Refine Level +9: MaxHP +600 ─────────── Type: Armor Position: Shoes Defense: 12 Armor Level: 1 Refinable Weight: 25 Required Level: 100

All parts of Rift Armor set can be enchanted with the Relic Reinforcer (cmd_fild07 60, 274) for 20x Shattered Magic Stone (6905) per attempt.
The armor must be equipped for the Relic Enforcer to enchant them.
An equipment can receive enchantment on the fourth (right most slot) and third slots. You can select one among the three enchantment types (Physical, Caster, Ranged).
Resetting enchantments costs 30x Shattered Magic Stone (6905) , and will remove all enchantments. There is a 30% chance of the equipment being destroyed when resetting enchantments.

Equipment	Enchantment Group	Physical	Caster	Ranged
Rift Armor and Shoes	Group 1	STR+1 (4700) ~ STR +4	INT+1 (4710) ~ INT +4	DEX+1 (4720) ~ DEX +4
	Group 2	HP+100 (4795) ~ MaxHP +300	SP+25 (4870) ~ MaxSP +75	SP+25 (4870) ~ MaxSP +75
Rift Decoration and Manteau	Group 1	STR+1 (4700) ~ STR +4	INT+1 (4710) ~ INT +4	DEX+1 (4720) ~ DEX +4
	Group 2	MaxHP+1% (4861) ~ MaxHP +5%	MaxHP+1% (4861) ~ MaxHP +5%	MaxHP+1% (4861) ~ MaxHP +5%