Evidence of Sublime Mystic Dawnstone cost:
2.0.10 comment: "not particuarly worth the 500 tokens"
2.0.12 comment: "As of next patch (April 2007) the cost of this is reduced to 100 tokens."
wowwiki before 2.1 patch showing 500 then one day after 2.1 showing 100.
Post: "...it costs 500 Battle tokens."
Random place: "and a Sublime Mystic Dawnstone for 500 battle tokens"
Heroic gems
They seem to have been unique until 2.1, then unique-equipped until 2.4.
Patch 2.4: "Gems obtained through Heroic difficulty instances are no longer Unique-equipped."
Comments on a random gem (there's similar ones on many gems):
2.0.8: "which are both unique"
2.0.10: "You can only have one of a unique gem in your possession"
2.0.12: "Note that the tooltip for 2.1 no longer lists this gem as Unique."
2.1: "unique-equipped, dropped from..."
2.1.2: "They are no longer unique"
PVP Gems
27679: Sublime Mystic Dawnstone - should cost 500 Halaa Battle Tokens 28118: Runed Ornate Ruby 28119: Smooth Ornate Dawnstone 28120: Gleaming Ornate Dawnstone 28123: Potent Ornate Topaz 28362: Bold Ornate Ruby 28363: Inscribed Ornate Topaz
Evidence of being unique: wowwiki 2.1 PTR patch notes: "PvP gems have been changed from Unique to Unique-Equipped." Comments on this one, this one, and this one mention being unique before 2.1.
Evidence of Sublime Mystic Dawnstone cost: 2.0.10 comment: "not particuarly worth the 500 tokens" 2.0.12 comment: "As of next patch (April 2007) the cost of this is reduced to 100 tokens." wowwiki before 2.1 patch showing 500 then one day after 2.1 showing 100. Post: "...it costs 500 Battle tokens." Random place: "and a Sublime Mystic Dawnstone for 500 battle tokens"
Heroic gems
They seem to have been unique until 2.1, then unique-equipped until 2.4.
Patch 2.4: "Gems obtained through Heroic difficulty instances are no longer Unique-equipped."
Comments on a random gem (there's similar ones on many gems): 2.0.8: "which are both unique" 2.0.10: "You can only have one of a unique gem in your possession" 2.0.12: "Note that the tooltip for 2.1 no longer lists this gem as Unique." 2.1: "unique-equipped, dropped from..." 2.1.2: "They are no longer unique"
2.13 comment on another gem: "all the Heroic gems are now Unique-Equiped"
Wowwiki 1: showing one as unique. Wowwiki 2: showing it as unique-equipped the next update.
IDs taken from the AtlasLoot addon: 30546: Sovereign Tanzanite 30547: Luminous Fire Opal 30548: Polished Chrysoprase 30549: Shifting Tanzanite 30550: Sundered Chrysoprase 30551: Infused Fire Opal 30552: Blessed Tanzanite 30553: Pristine Fire Opal 30554: Stalwart Fire Opal 30555: Glowing Tanzanite 30556: Glinting Fire Opal 30558: Glimmering Fire Opal 30559: Etched Fire Opal 30560: Rune Covered Chrysoprase 30563: Regal Tanzanite 30564: Shining Fire Opal 30565: Assassin's Fire Opal 30566: Defender's Tanzanite 30572: Imperial Tanzanite 30573: Mysterious Fire Opal 30574: Brutal Tanzanite 30575: Nimble Fire Opal 30581: Durable Fire Opal 30582: Deadly Fire Opal 30583: Timeless Chrysoprase 30584: Enscribed Fire Opal 30585: Glistening Fire Opal 30586: Seer's Chrysoprase 30587: Champion's Fire Opal 30588: Potent Fire Opal 30589: Dazzling Chrysoprase 30590: Enduring Chrysoprase 30591: Empowered Fire Opal 30592: Steady Chrysoprase 30593: Iridescent Fire Opal 30594: Effulgent Chrysoprase 30600: Fluorescent Tanzanite 30601: Beaming Fire Opal 30602: Jagged Chrysoprase 30603: Royal Tanzanite 30604: Resplendent Fire Opal 30605: Vivid Chrysoprase 30606: Lambent Chrysoprase 30607: Splendid Fire Opal 30608: Radiant Chrysoprase
The IDs pasted alone: