My two cents on best items for each available slot for raiding mystics (full blown heals, minimal DpS):
Head
\aITEM -559966266 2051900139:Rune Etched Helm\/a
\aITEM 1524258337 779069803:Faded Black Hood\/a
*\aITEM 615934402 1476202165:Spiritual Coif from Beyond the Portal\/a
Shoulders
*\aITEM -794380133 1693645768:Spiritual Spaulders from Beyond the Portal\/a
Chest
*\aITEM 1193605931 1023502953:Ancient Tunic of the Oracle\/a
\aITEM 83743879 1972775260:Silken Robe of Al'Kabor\/a
\aITEM 923336957 -1755220287:Spiritual Cuirass from Beyond the Portal\/a
Legs
\aITEM 137661471 1603966212:Dreamweave Ringmail Leggings\/a
*\aITEM 2041885299 -1984646109:Spiritual Leggings from Beyond the Portal\/a
Forearms
*\aITEM -1436729697 503938508:Spiritual Wristlets from Beyond the Portal\/a
Hands
*\aITEM -1740941264 1431469692:Spiritual Gloves from Beyond the Portal\/a
Feet
*\aITEM 1726337301 2000186444:Spiritual Boots from Beyond the Portal\/a
Back
\aITEM -469630617 -1962466910:Ring of Scale Elder's Cloak\/a
*\aITEM 1206192208 1115265277:Shroud of Renewal\/a
\aITEM 1107174978 -360591285:Cloak of the Runnyeye Champion\/a
Neck
\aITEM -26195725 722819823:Vyx Crest Locket\/a
*\aITEM -160059843 -2102366618:Cruel Trinket of Treachery\/a
\aITEM -1295556640 -24374265:Jewel of Condensed Void Matter\/a
\aITEM 852760833 -790814150:Chain of Unknown Knowledge\/a
\aITEM -393650473 -1470956279:Locket of the Guk Priest\/a
\aITEM 1538468478 -1091795960:Void-Darkened Shard of Wisdom\/a
Ears
*\aITEM 733583127 1356004522:Totem of the Ankexfen\/a
*\aITEM 246035063 125680297:Hoop of Vampiric Celerity\/a
\aITEM 1369371583 1316397331:Talisman of the Ethernauts\/a
\aITEM -1614733733 -1323166941:Loop of Voidless Being\/a
\aITEM 1412141532 1793770544:Earring of the Enlightened One\/a
Fingers
*\aITEM -746082219 1255150069:Band of Swirling Portals\/a
*\aITEM 1236844284 554059110:Band of Mreeptahp's Fury\/a
\aITEM 1466750809 1642944353:Pilfered Band of Void Guidance\/a
Wrists
*\aITEM 1845057975 361298211:Blackened Pearlescent Bangle\/a
*\aITEM 1826133055 759649179:Storm of Healing\/a
\aITEM 1487641109 -842631161:Moth Dusted Cuff\/a
Waist
*\aITEM -124004185 -1415524174:Girdle of Mistmyrian Legacy\/a
\aITEM -1612788750 -1454500698:Cord of Innoruuk's Favored\/a
\aITEM -231717817 665762572:Stained Mummy Bandages\/a
\aITEM -817266927 -1993416384:Sash of Final Moments\/a
Charms
*\aITEM -1890157935 -841683885:Charm of Tunare\/a
*\aITEM 1909247058 -2122517544:Charm of Rodcet Nife\/a
\aITEM 325290750 1373707324:Charm of Karana\/a
\aITEM -1286527158 -691761947:Saita's Glowing Jewel\/a
\aITEM -1389210615 121173358:Philibauq's Dictionary of Restoration\/a
Primary
*\aITEM -305449863 -1749295877:Cudgel of Obviation\/a
Secondary
\aITEM -710242805 786830112:Brace of Corporeal Darklight\/a
*\aITEM -1168557941 147603838:Staff of Limitless Growth\/a
\aITEM 1643590278 -46320571:Trixy Cane of Trickery\/a
Range
\aITEM -1602232641 1410454266:Trakanon's Gaze\/a
\aITEM 592925683 -7337559:The Arm of Erollisi\/a
*\aITEM 1259636405 1967761045:Symbol of the Faydark\/a
Stars indicate my choice of items.

