“Happy Birthday, Clarissa Fray“ Jace gives Clary a witchlight stone on her birthday when

“Happy Birthday, Clarissa Fray“
Jace gives Clary a witchlight stone on her birthday when he shows her the garden inside the institute, (City of Bones).

https://www.deviantart.com/darknessendless/art/Happy-Birthday-Clarissa-Fray-776273929