Artifact Yuan-Ti are Searching For

While Lady Spore was on more amicable terms with Nohshuh during her imprisonment, she overheard that there are numerous groups of Yuan-Ti searching across the underdark below The Arum Swamp looking for a small cube artifact, with a gemstone on each face. It's exact use is unclear, but it has something to do with Zihsha's plans for the Temple of Sanguine Scales.