Peek inside the jewel collection of J. P. Morgan, at least in your mind. Plates from the privately published “Catalogue of the collection of jewels and precious works of art the property of J. Pierpont Morgan; compiled at his request by G.C. Williamson, LITT. D.” Published in London in 1910 by the Chiswick Press.

Golden chain of honour for what is known as the Order of Grace of Christian II of Saxony. Number 1. Plate I, page 45. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n44/mode/1up
Badge of the order of the Annunziata of Savoy, in enameled gold. Number 2; Pendent (sic) Jewel of wrought gold enamelled. Number 6. Plate II, page 51. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n50/mode/1up
Pendent Jewel composed of wrought gold, enamel, and ambergris. Number 7; Pendent Jewel composed of two blocks of crystal mounted in enamelled Gold. Number 8. Plate IV, page 67. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n50/mode/1up
Jewish Betrothal ring of gold. Number 20; Small Bust of Henri IV. Number 19; Gold Medal of the Archduke Maximillian, mounted in rich enamelled scrolls of gold-work, and ornamented with a pearl. Number 10. Plate VI. Page 77, Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n77/mode/1up
Fine onyx rosary with enamel-work inside the larger beads represented open, showing the enamel-work in the interior of the beads. Number 13. Plate IX. Page 97, Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n96/mode/1up
Pendant jewel composed of a gem set in an open framework. Number 14. Plate X. Page 103. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n102/mode/1up
Two links from a gold necklace or two buttons. Numbers 15 and 16; Pendant of enameled gold, forming a large flower, set upon rich scroll-work matching the two buttons. Number 17; Enameled gold pendant in the form of a swan. Number 22. Plate XI. Page 109. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n108/mode/1up
Circular medallion of gold. Number 18. Medallion of mother-of-pearl mounted in silver-gilt oval frame. Number 23. Plate XII. Page 115. Hallett Hyatt, engraver. Collections of the GIA (Gemological Institute of America) Library. Artwork in the public domain due to age. via https://archive.org/details/CatalogueOfTheCollectionOfJewelsAndPreciousWorksOfArtThePropertyOf/williamson-g-catalogue-1910-BK001723-LowRes/page/n114/mode/1up

Jugendstil pendants just perfect for your Saturday night. Collections of the MAK – Museum of Applied Arts, Vienna. One by my favorite, Koloman Moser.

Pendant. Before 1911.
Pendant. Before 1911. Gold, silver, emerald and opal. Franz Karl Delavilla, designer (1884-1967). Oscar Dietrich, manufacturer. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-23570

Bijou der Loge "Treue"Bijou der Loge "Treue" pendant. ca. 1910.
Bijou der Loge “Treue”Bijou der Loge “Treue” pendant. ca. 1910. German silver and enamel. Josef Hoffmann, designer (1870-1956). Wiener Werkstätte, manufacturer. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-29975

Pendant. ca. 1910.
Pendant. ca. 1910. Silver, enamel and lapis lazuli. Enamel and filigree. Sophie Sander-Noske, designer (1884–1958). Manufacturer not known. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-23565

Pendant. 1904.
Pendant. 1904. Silver with gemstones and enamel. Koloman Moser, designer (1868-1918). Manufactured by the Wiener Werkstätte in 1911. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-23303

Pendant. 1910-1912.
Pendant. 1910-1912. Platinum, gold, sapphire, citrine and diamond. Filigree. Stephanie Hunfalvy, designer. execution: Wilhelm Haarstrick, maker, Salzburg. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-23627

Pendant. 1907.
Pendant. 1907. Silver and semi-precious stones. Josef Hoffmann, designer (1870-1956). Manufactured by the Wiener Werkstätte. Image © MAK – Museum of Applied Arts, Vienna. Fair use license. via https://sammlung.mak.at/en/collection_online?id=collect-23091

Jewelry by French creative genius and designer René Lalique from the hidden in plain sight archives of the Walters Museum, Baltimore, Maryland.

Corsage brooch with grasshoppers. 1920-1929.
Corsage brooch with grasshoppers. 1920-1929. Molded glass, nickel silver, marcasite and pigmented resin. René Lalique, designer (1860-1945). Cc0 license 0. via https://art.thewalters.org/detail/26096/corsage-brooch-with-grasshoppers-and-cabochons/

Fern leaves brooch. 1903-1904.
Fern leaves brooch. 1903-1904. Silver-gilt, opal, glass and diamond. Cc0 license 0. via https://art.thewalters.org/detail/23250/fern-leaves-brooch/

Grape necklace. ca. 1903.
Grape necklace. ca. 1903. Molded glass, cloisonné enamel and gold. Cc0 license 0. via https://art.thewalters.org/detail/12197/grape-necklace/

Brooch of berries and leaves. ca. 1903.
Brooch of berries and leaves. ca. 1903. Gold, glass, enamel and citrine. Cc0 license 0. via https://art.thewalters.org/detail/1693/brooch-of-leaves-and-berries/?type=date&letter=a&sort=title&order=asc&begin_date=-10000&end_date=2015

Jewelry by German designer Theodor Fahrner. Living from 1859-1919 , he founded a company that bore his name. Slightly more affordable than Tiffany and Cartier, you didn’t have to mortgage the family schloss to own a piece.

Bracelet. ca. 1910.
Bracelet. ca. 1910. Modernist in style. Silver, enamel and marcasite. Collaboration with Murrle Bennett and Company. Image © Tadema Gallery, London. Fair use license. via http://www.onlinegalleries.com/art-and-antiques/detail/modernist-movement-bracelet/139358

Brooch. Undated.
Brooch. Undated. Silver, enamel and semi-precious stones. Ref TF3. In the public domain in the United States because the maker has been dead over 70 years. via http://www.centuryofdesign.com/jewellery/murrle-bennett–theodor-fahrner-.html

Bracelet. ca. 1930. Art Deco.
Bracelet. ca. 1930. Art Deco. Gilt, sterling and marcasite with spiral filigree. Image © Lisa Kramer Vintage. Fair use license. via https://www.rubylane.com/item/933844-LK6782/Theodor-Fahrner-Art-Deco-Gilt-Sterling

Brooch. Art Deco.
Brooch. Art Deco. Sterling Silver, marcasite, ammonite, rose quartz and chalcedony. In the public domain in the United States. via https://www.ebay.com/itm/Antique-Theodor-Fahrner-Art-Deco-Sterling-Semi-Precious-Brooch-Germany-Unsigned-/222510200232

Brooch. 1937.
Brooch. 1937. Filigree sterling silver with gilding, marcasite stones and pearl. Image © Les Styles Modernes. Artwork in the public domain due to age. via https://shop.strato.de/epages/61231908.sf/en_US/?ObjectPath=/Shops/61231908/Products/433

Dazzled up gold elephants all tricked out in jewels. Gustav Manz, gold worker. Living from 1865 to 1946, he traveled from Germany to New York City, visiting the animals he loved so often that all the caretakers at the Bronx zoo knew him by name. No doubt bringing treats, I’m sure the elephants did too.

Dress clip. 1938.
Dress clip. 1938. Attributed to Manz, c. 1938. Gold, jade, ruby, and sapphire. Private collection. Butler photograph. Fair use license. via http://www.themagazineantiques.com/article/the-life-and-jewelry-of-gustav-manz/

Elephant ring. ca. 1920. Presumed to be by Gustav Manz.
Elephant ring. ca. 1920. Presumed to have been designed by Gustav Manz. Gold, carved emerald and precious stones. Cartier. Image © Skinner Auctions. Fair use license. via https://www.skinnerinc.com/auctions/2610B/lots/637.

The premier maker and designer of animal jewelry from 1903 onward, Gustav Manz did work for many well known jewelry firms in New York,  including Tiffany, Cartier, Dreicer, Marcus & Co and Black Starr & Frost. He also worked for Shreve Crump and Low in Boston. Please see this link for a further discussion about the attribution of the elephant ring and to learn a bit more. Thanks! https://eragem.com/news/did-gustav-manz-design-this-18k-gold-cartier-elephant-ring-which-sold-for-13200-at-recent-skinner-auction/

Brooches to set off anyone’s black sweater by Wiener Werkstätte co founder and master designer Josef Hoffmann.

1910.
1910. Executed Karl Ponocny for the Wiener Werkstätte. Gold, mother of pearl and precious stones. Private collection, Fair use license. Photo credit: Decorative Arts Consult. via https://artinwords.de/jugendstil-schmuck-aus-europa/

1908-1910.
1908-1910. Fair use license. via https://domeniquemora.blogspot.com/2013/02/josef-hoffmann-work-of-art.html

Necklace. 1909.
Necklace. 1909. Silver with mother of pearl and evidence of gold plating. Fair use license. via https://www.masterart.com/artworks/5248/josef-hoffmann-wiener-werkstatte-necklace