Some examples of jewelry from the 16th century:
Duchess Beatrice d’Este, Detail from the Pala Sforzesca, by the Master of the Pala Sforzesca, 1480 – 1520
Pinacoteca di Brera, Milano
St Catherine of Bologna with 3 donors, by Master of the Baroncelli Portraits, c. 1470 – 1480
Belgium, Bruges, oil on oak panel
Portrait of a Young Woman holding Grapes and Apples, by Lucas Cranach the Elder, 1528
Oil on panel, transferred to canvas, 81.6 cm x 55 cm
Private collection
Portrait of Queen Catherine Parr, last wife of King Henry VIII., attributed to Master John, c. 1545
Detail of Paola Bonanome Gualdo and daughters, by Antonio Fasolo, 1560
Portrait of a Lady, by Girolamo Da Carpi, 1501 – 1556
Städel’s Art Institute and Municipal Gallery, Frankfurt/Main
Glass filigree and gilded necklace, 4th quarter 16th century
Innsbruck (?), Austria
Kunsthistorisches Museum Wien
Female portrait, by school of Alessandro Bonvicino known as Moretto da Brescia, 16th century
Oil on canvas
National Academy of San Luca, Rome
Elisabeth de Valois Quenn of Spain, by Pantoja de la Cruz, c. 1605
Oil on canvas, 120 cm x 84 cm
Museo del Prado
Gemstone ring, 16th century
Private collection
Enamelled gold pendant with gemstones, England, 1540 – 1560
Victoria and Albert Museum, London
If you know about missing informations of origin or copyright please let me know!