Released on February 20th, 2021, the Heartblade was sold through its own gamepass for 1,699 Robux, and since that gamepass went offsale the only way to get one now is through trading. It is a godly knife with no set or event behind it, so what draws people is the look and the fact that no new copies can enter the game. Roughly in its value range sit Green Pumpkin (2018), Darkknife and Icebreaker.
Heartblade is a Godly knife in Murder Mystery 2. Its combined value is 65, #48 of 146 godly items and #173 of 921 valued items overall. Demand is low: it sits in inventories for a while, and buyers often ask for a discount.
Closest in value: Green Pumpkin (2018) (65), Darkknife (67.5), Icebreaker (67.5). Use them as a benchmark for a fair one-for-one trade.
Value history
What it is worth in other items
1×Green Pumpkin (2018)
1 : 1Darkknife
1 : 1Icebreaker
1×Chroma Darkbringer
1×Glitch1
1×Ornament
1.1×Piggy
1 : 1.1Black CatHow many of each item equal one Heartblade by value. Demand differs between items, so check it before you trade.