WoW Heirlooms — Browse All Heirlooms
Track your World of Warcraft heirloom collection. Browse all 134 heirlooms with vendor locations, costs, and upgrade levels. Filter by armor slot and weapon type.
Browse all WoW heirlooms with upgrade levels and acquisition sources. Find heirlooms from vendors, achievements, and special events. Track which heirlooms you own and their upgrade status via Battle.net.
Band of Radiant Echoes
Source: World Event: Radiant Echoes.
The 
Band of Radiant Echoes is a haste/mastery heirloom ring introduced in the War Within Pre-patch, obtained by combining four specific items collected through the World Event.
Check Your Heirloom Filter
Open your Heirloom window and click the filter button, then make sure 'World Event' is checked — without it, Band of Radiant Echoes and other World Event heirlooms will not appear in the list.
Purchase the Lifeless Stone Ring
Buy the 
Lifeless Stone Ring from Remembrancer Amuul for 
25 Residual Memories — this is the base item you will combine with the three Essences to create the ring.
Collect Memory of Northrend
Participate in active objectives in Dragonblight to earn 
Memory of Northrend drops, then combine 20 of them to create the 
Essence of Northrend.
Collect Memory of Kalimdor
Participate in active objectives in Dustwallow Marsh (such as during the Onyxia event) to earn 
Memory of Kalimdor drops, then combine 20 of them to create the 
Essence of Kalimdor.
Collect Memory of the Eastern Kingdoms
Participate in active objectives in Searing Gorge to earn 
Memory of the Eastern Kingdoms drops, then combine 20 of them to create the 
Essence of the Eastern Kingdoms.
Combine All Four Items
Once you have the Lifeless Stone Ring, Essence of Northrend, Essence of Kalimdor, and Essence of the Eastern Kingdoms, combine all four to create the Band of Radiant Echoes.
Upgrade the Ring Twice
Use one 
Eternal Heirloom Armor Casing to upgrade the ring to scale up to level 59, then use one 
Awakened Heirloom Armor Casing to upgrade it again to scale up to level 69 — despite the casing descriptions referencing Armor, Trinkets, Shields, and Off-hands, both casings work on this ring.
Tips
Continental memories (Memory of Northrend, Memory of Kalimdor, Memory of the Eastern Kingdoms) only drop while that zone's event is actively running — once the boss is dead and the timer expires, you must move to the next active zone, as memories stop dropping until the next cycle.
Following a Blizzard hotfix, each zone immediately repeats its sequence after completing, so you can continue earning memories for the full duration of each active cycle before moving on.