Loot lost in Bahamut Turn 2

Thread Title:
Loot lost

ISP:
CMCC

Type of Internet Connection:
Optic Fiber

Internet Connection Speed:
100Mbit/s

Date & Time:
Feb, 26 23:00 JST,2014

Frequency:
Unknown

Character Name:
Katniss Everdeen

Race:
Miqo'te F

World:
Bahamut(JP)

Class/Level:
Bard/50

Area and Coordinates:
Binding coil of Bahamut Turn 2

Party or Solo:
Party
8 members.

NPC Name:
No NPC

Monster Name:
ADS

In-Game Time:
Can't quite remember

Steps:
Hi there. In turn 2, I rolled on the Allagan Choker of Healing and won with a point of 77.I heard the roll-winning music , heard a put-in-chest sound and the system showed it was in my armoury chest.After that, I suffered a disconnection while exiting the turn 2(code ID 90000).I tried a few times and always failed to log in.But when I gained access to the game, the necklace was gone.Plese help me about that,thank you.