Devotional reliquary from the 19th century containing a relic of: Saint Hyacintha Mariscotti. "from the cilice" (a hair shirt or metal spiked belt used for penitence and mortification) Carefully preserved beneath glass and accompanied by its original ecclesiastical Certificate of Authenticity (Authentica). The document is signed by His Eminence Cardinal Sterckx, Archbishop of Mechelen, Belgium, providing an exceptional level of provenance and ecclesiastical authentication for the relic. The reverse of the reliquary displays an intact red wax episcopal seal, along with red silk threads, which assure the authenticity of the relic’s ecclesiastical origin. These elements remain undisturbed, affirming the relic’s preserved and original condition. The reliquary remains in well-preserved condition, retaining the devotional character and craftsmanship typical of nineteenth-century Catholic reliquaries. The accompanying certificate constitutes an important historical and documentary element, confirming the relic’s authenticity and authorized circulation within the Church. Saint Hyacintha Mariscotti (1585–1640) was an Italian Franciscan tertiary renowned for her profound spiritual conversion and dedication to charitable works. Born into a noble family, she initially entered religious life without genuine vocation, but later underwent a remarkable transformation that led her to embrace a life of prayer, penance, and service to the poor, the sick, and the marginalized. Canonized in 1807, she is remembered as a model of repentance, humility, and Christian charity. Relics associated with Saint Hyacintha are especially valued by devotees who seek her intercession in matters of spiritual renewal and perseverance in faith. The reliquary does not contain human remains.