Gernaran Tear

Gernaran tears (also known as Dynast drops) are toughened glass beads infused with magic and created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail. The tail, when broken, causes the drop to violently explode with tiny shards of glass. 
=== Gernaran Tear ===
Grenade, uncommon
As an action, a character can throw a Gernaran tear at a point up to 60 feet away. Each creature within 5 feet of that point must succeed on a DC 12 Dexterity saving throw or take 3d6 piercing damage, taking half as much on a success.
Price per Device: 50gp
Recipe: Tool Requirements: Glassblower's Tools (proficiency required). A Gernaran tear requires one pound of beach sand and 10 ounces of residuum. In one (1) day of downtime, you can craft up to four (4) tears.