The following are among the notable collections of precious and semi-precious stones prepared by Tiffany & Co. for International Expositions.

1915 San Francisco, California, Mines and Mining Building, Panama-Pacific Exposition collection.

1907 Jamestown Exposition Collection, Gold Medal.

1905 Portland, Oregon, Exposition collection, awarded two gold medals.

1904 St. Louis Exposition collection. Grand Prize.

1902 Turin Exposition collection, Hors Concours, awarded special diploma of merit.

1901 Buffalo Exposition collection, awarded gold medal, presented by the late J. Pierpont Morgan, Esq., to the Musee Histoire Naturelles, Jardin des Plantes, Paris.

1900 Paris Exposition collection, awarded the Grand Prix, and was presented by the late J. Pierpont Morgan, Esq., to the American Museum of Natural History, New York.

1895 Atlanta Exposition collection, presented by Dr. L. T. Chamberlain to the United States National Museum, Washington.

1894 special collection, purchased by the Midwinter Fair Memorial Museum of San Francisco.

1893 Chicago Exposition collection received several special awards, and was purchased by the “Field Columbian Museum,” Chicago.

1889 Paris Exposition collection awarded two gold and one silver medals, was presented by the late J. Pierpont Morgan, Esq., to the American Museum of Natural History, New York.

1878 Paris Exposition collection, awarded the Grand Prix.

1867 Paris Exposition, awarded a gold medal.

Tiffany & Co.’s stock of unmounted stones includes the following:

Phenomenal Gems

Chrysoberyl Cat’s-eye, Alexandrite Cat’s-eye, Alexandrite, Ruby and Sapphire Asteria, Moonstone—with light blue and white chatoyancy.

Alexandrite

Leaf or olive green by natural or day-light, and columbine or raspberry red by artificial light, from Ceylon and Takawaja, Asiatic Russia.

Amethyst

Rich royal purple, from the Ural Mountains and Auvergne, France. Red by artificial light, from the Ural Mountains, Fine purple from Brazil, South America, North Carolina, and Virginia.

Aquamarine

Deep blue, from Brazil; green and blue. from Connecticut, the Ural Mountains, Siberia, and North Carolina; light blue and light green, from California and Maine.

A flawless 22-carat natural aquamarine, October’s natal stone, with an exquisite radiant-style faceting. This stone has been sold. (Photo: MIa Dixon)

Asteria

Light blue, blue, purple, light red, and ruby red, from Ceylon and Burmah.

Azur-Malachite

Blue and green mixture. Arizona.

Benitoite

Blue, from California.

Beryl

Light blue and green, from Maine, North Carolina, Connecticut, Colorado. Brazil, and Siberia. Deep blue, from California, North Carolina and Brazil. Yellow, and yellow Ural Mountains, and Siberia. Rose, Madagascar and California.

Californite

California.

Chlorastrolite

From Isle Royal, Lake Superior. Chrysoberyl Light yellow, golden yellow, yellow brown, yellowish green, sage green, green, olive green, from Brazil and Ceylon.

Chrysoberyl Cat’s-eye

Light yellow. yellow, yellowish brown, and green, from Brazil an Ceylon. Also Alexandrite Cat’s-eyes, green by day and red by night, from Ceylon.

Chrysocolla

Sky blue, Arizona.

Diamond

From India, Brazil, and South Africa. White. steel blue, rose colored, lemon and orange, yellow, cinnamon, light green, brown black, and a large assortment of rare and curious tints, from which material for a necklace, brooch, ring, or other jewel can be selected.

Emerald

Rich velvet and grass-green, from the Muso mine, New Granada. Light green from Takawaja, Asiatic Russia, and New South Wales.

Essonite

Or Hyacinths, from Ceylon.

Garnet

Rich red, almost ruby red, from Arizona, New Mexico, and South Africa. Purple and almandine, from India and Bohemia. Honey yellow (essonite or hyacinth variety), from Ceylon. Honey brown, reddish brown (spessartite variety), from Virginia. Green (demantoid variety), rich, vivid green, green, yellow green, from the Ural Mountains.

Jade

Under this name two entirely distinct mineral substances are used in the arts. Jade or Nephrite is 6.5 in hardness, and is one of the toughest minerals known. It is a silicate of magnesia with a schistose and often a felt-like structure. It has a specific gravity of about 2.9; occurs in various shades of green, also white, and can be highly polished. This mineral is often found in large pieces. A waterworn boulder found in western New Zealand weighs 7,500 lbs. It was purchased by Tiffany & Co., and is now in possession of the American Museum of Natural History. Nephrite is also found in Siberia and Alaska. It is cut into vases, cigarette cases, cigar boxes, candlesticks, portrait frames, and other art objects; also slabs a quarter of an inch in thickness, three feet in length and two feet in width. The rich green color and translucency of the mineral make it very appropriate for art objects.
Jadeite has a hardness of 7 and a specific gravity of 3.1 to 3.5. Its structure is more crystalline than that of Nephrite. It is a silicate of alumina. The color varies greatly—sometimes intensely white with splashes or spots of the richest emerald green, and, again, lavender-colored spots are associated with the green. The mineral is found principally at Bhamo, Burmah, and was also known in ancient Mexico. The bright spots are usually cut out for rings or necklace stones; sometimes, however, a field of white is left around them so as to cast them in relief. These latter pieces are cut into pendants, spheres for necklaces, and a great variety of other ornaments.
Tiffany & Co. are prepared to make art objects of any size from these minerals.

Kunzite

Rich lilac, pink, and rose, from near Pala, California.

Morganite Variety of Beryl

Rich rose, red, from Madagascar and California.

Moss Agate

From Wyoming, India, and Brazil.

Opal

Precious variety from the State of Washington, Oregon, Idaho, Queensland, New South Wales, and Hungary. Fire opal, limpid and deep red, from Mexico.

Pearl

From Ceylon, Persian Gulf, Western Australia, and Sulu Archipelago. Perfectly white Oriental pearls of exceptional size and beauty. Black and gray pearls from the Lower California coast. Pink or conch pearls from Florida and the West Indies. White, pink, brown, purple, and other colored pearls from the fresh-water brooks of Ohio, Indiana, Tennessee, Texas, Kentucky, and Wisconsin rivers. Purple and black pearls from the common clam of Long Island Sound and the Atlantic coast. Green or iridescent pearls from the abalones or earshells of the California coast, Japan and Korea.

Peridot

(Olivine and Chrysolite.) Rich olive green, from Egypt. Small olive green, yellow green, from Arizona and New Mexico.

Phenacite

From Takawaja, Asiatic Russia, and Colorado and Maine.

Rhodonite

Rich flesh red, from the Ural Mountains, and Cummington, Mass.

Rock Crystal

From North Carolina and California, in pieces large enough to cut into jewel caskets, bonbonnières, vinaigrettes, hand mirrors, clockcases and other small objects of art.

Ruby

Pigeon’s-blood red, from Burmah. Light red, with tint of purple, from Ceylon and North Carolina. Dark beef-blood red, from Siam, and light red, from the Ural Mountains.

Rutilated Quartz

From North Carolina and Switzerland.

Rutile

From North Carolina.

Sapphire

Cornflower blue, dark velvet blue (bleu de roi), from Ceylon. Light blue, peacock blue, from Burmah and Siam. Green, lemon and straw yellow, salmon-colored pink, heliotrope purple, white and other colors, from Ceylon, Burmah, Siam, Montana, and the Ural Mountains.

Spinel

Ruby red, flame red, yellowish red, pink, purple, blue, blue green, and green in a variety of tints, from Ceylon, Siam, and Burmah.

Tiffanyite

Bluish white diamond that absorbs sunlight and artificial light, giving it out in the dark, from the Borgogem Mine, Brazil, S.A.

Topaz

Wine yellow, pink, white, and sherry colored, from Brazil. Salmon colored, light blue, light green, white, from Colorado and the Ural Mountains.

Tourmaline

Light green, olive green, grass-green, dark green, from Maine, California, and Brazil. Blue (indicolite), from Maine and Brazil. Red, pink (rubelite), from California, Maine, Brazil, and the Ural Mountains. Brown, from Ceylon and Carinthia. White (achroite), from Brazil and Maine.

Turquoise

Sky blue, from Persia. Fine sky blue and robin’s-egg blue, from New Mexico.

Utahite

Golden green, often banded with yellow, from Utah.

Zircon

Yellow, honey yellow, yellow green, light green, brownish green, green, yellow brown, brown, white, cinnamon, from Ceylon and Australia.