NPCs composing that spawngroup :

Praps_Gemshard (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

crystal_2, range=97 (-297,285,-494)

crystal_6, range=166 (-394,280,-494)

a_stalag_terror (50%)
a_stalag_terror (50%)

crystal_14, range=128 (-228,248,-384)

Vevina_Velweaver (50%)
Vevina_Velweaver (50%)

crystal_17, range=186 (-129,236,-364)

Guard_Grabadin (100%)

crystal_20, range=100 (-348,331,-559)

a_velium_crawler (100%)

crystal_25, range=179 (-321,206,-384)

Derron_Coldmist (50%)
Derron_Coldmist (50%)

crystal_26, range=18 (-272,363,-428)

Fuller_Velweaver (50%)
Fuller_Velweaver (50%)

crystal_27, range=123 (-317,266,-398)

Guard_Evercold (100%)

crystal_28, range=135 (-316,251,-398)

Guard_Slacey (100%)

crystal_35, range=104 (-339,310,-428)

a_Coldain_miner (50%)
a_Coldain_miner (50%)

crystal_36, range=38 (-224,351,-428)

a_Coldain_miner (50%)
a_Coldain_miner (50%)

crystal_37, range=158 (-322,229,-400)

Historian_Baenek (100%)

crystal_38, range=97 (-193,299,-384)

Kramble_Gemshard (100%)

crystal_39, range=140 (-263,233,-384)

Milliace_Gemshard (100%)

crystal_40, range=144 (-255,229,-400)

Captain_Dunstan_Coldheart (100%)

crystal_41, range=180 (-261,193,-384)

Guard_Kevin (100%)

crystal_42, range=118 (-363,322,-428)

Flint_Velweaver (100%)

crystal_43, range=31 (-235,397,-373)

Guard_Justik (100%)

crystal_44, range=44 (-232,410,-373)

Guard_Solistak (100%)

crystal_45, range=196 (-243,177,-398)

Hardat_Gemshard (100%)

crystal_47, range=195 (-96,261,-400)

Cassia_Gemshard (100%)

crystal_48, range=192 (-95,267,-384)

Nadalia_Coldmist (50%)
Nadalia_Coldmist (50%)

crystal_49, range=137 (-228,238,-400)

Soren_Coldheart (100%)

crystal_50, range=90 (-267,463,-398)

a_Coldain_miner (100%)

crystal_51, range=132 (-127,341,-384)

Tacy_MistHeart (50%)
Tacy_MistHeart (50%)

crystal_52, range=85 (-176,344,-400)

Gilliad_Coldheart (100%)

crystal_111144, range=160 (-202,222,-384)

Scout_Grandan (100%)