Hair jewelry is jewelry containing or composed of locks of hair. This
type of jewelry was popular in the mid-1800's as a remembrance of deceased
Stanley Hagler was a jewelry designer whose pieces were opulent, complex,
hand-wired, and usually colorful. Hagler produced pieces from 1953 until
1996. He produced pieces for Lord & Taylor, Bergdorf Goodman, and
Saks Fifth Avenue. Hagler's partner, Ian St Geilarm, designed many of
the Hagler pieces. After Stanley Hagler's death in 1996, jewelry continued
to be produced under the name Stanley Hagler & Company.
A hallmark is an official mark (or a series of marks) made in metal that
indicates the fineness of the metal and the manufacturer's mark. For example,
a hallmark of 925 indicates 925 parts of gold per 1000 weight. Other hallmarks
indicate the maker of the piece and sometimes the year of manufacture.
In many countries (like Britain) it is illegal to hallmark metal incorrectly;
some countries are notoriously lax in their enforcement of hallmark honesty.
Hammered metals have been formed, shaped, or decorated by a metalworker's
hammer. The surface of hammered metal is covered with crater-like depressions
made by a hammer. Many hammered metals are used in jewelry including gold,
silver, brass, aluminum, etc. The pin above is hammered silve
Hardness is measured using the Mohs Scale of Hardness. A substance's hardness
value indicates the materials resistance to scratching and grades minerals
on a comparative scale from 1 (very soft) to 10 (very hard).. In the Mohs
scale, a mineral of a given hardness rating will scratch other minerals
of the same rating, as well as any minerals of a lower rating. For example,
sapphires and rubies have a Mohs rating of 9 and will scratch each other,
as well as any mineral with a rating lower than 9. However, they will
not scratch diamonds, which are rated 10. The Mohs scale of mineral hardness
was devised by the German mineralogist Frederich Mohs (1773-1839) in 1812.
Amber, Fingernail, Ivory, Shell, Jet 2.5
Bronze, Coral, Pearl 3
Amethyst, Chalcedony, Quartz, Steel (pocket knife) 7
Spinel, Topaz 8
Ruby, Sapphire 9
Miriam Haskell (1899-1981) was a costume jewelry designer who designed
feminine, intricate jewelry. Haskell frequently used "antique"-gilded
surfaces, pearls, intricate beadwork, and naturalistic themes. Miriam
Haskell started signing her jewelry in the early 1950's although she began
selling jewelry in 1924. Her jewelry is still manufactured and is widely
Hawk's eye is a green, grey or blue variety of quartz that has parallel,
fibrous inclusions of crocidolite that give it a greenish cat's eye effect
(chatoyancy). This mineral has a silky luster. It looks a lot like Tiger's
Eye, and often occurs with it in the same rock, but the internal structure
Heat treatment is the heating of stones to a high temperature in order
to enhance the color or clarity. For example, blue-green aquamarine becomes
blue with heat treatment and brown zircon becomes blue or clear.
Heishi (pronounced he-she) is jewelry made from disk-shaped beads of shell
(or turquoise, lapis lazuli, and other stones). Each bead begins as a
tiny flat piece of shell (or stone). A tiny stringing hole is drilled
though the fragment. Many of these jagged pieces are strung together tightly
on a wire and are then sanded into evenness using a fine-grained sandstone
and then sandpaper. The result is a very smooth strand of disk-shaped
beads. This is an ancient form of bead-making developed by the Pueblos
of North America.
Helenite is a manmade (not natural) green glass that is made from "rock
dust" (not volcanic ash) taken from the vicinity of the Mt. St. Helens
volcano in Washington state. The dust is fired to 2700 degrees F, forming
glass, which is later faceted and used as a gemstone. This glass is sometimes
called emerald obsidianite or Mount St. Helens obsidian (but it is not
obsidian, which is a natural glass). Helenite is sold as a souvenir of
the eruption of Mt. St. Helens on May 18, 1980. The composition of rock
from Mt. St. Helens is: Rock from Mt. St. Helens is composed of: silicone
60.50%, aluminum 16.60%, iron 6.02%, calcium 5.36%, sodium 4.18%, manganese
2.59%, potassium 1.20%, titanium .90%, phosphorus .35%, magnesium .12%,
strontium .06%, Beryllium .04%, copper .03%, lead .03%, zirconium .02%,
chromium .02%, and zinc .02%; the remaining 0.16 percent is sulfur, chlorine,
Heliotrope (commonly known as bloodstone) is an inexpensive type of chalcedony
that is green with red highlights (caused by iron oxide). Heliotrope is
porous and relatively soft.
Hemalyke is a synthetic hematite that is made by grinding up hematite,
adding a binder (glue) and then press-molding it. The stone is sometimes
faceted. Hemalyke looks very much like natural hematite - it is very difficult
to them apart.
Hematite (sometimes spelled haematite, and also known as kidney ore) is
a lustrous, opaque, blue-black to silvery gray mineral often used in jewelry.
Hematite is iron oxide (Fe2O3). Hematite has a hardness of 6.5 and a specific
gravity of 4.95 to 5.16. When powdered, hematite is red; when rubbed on
a hard stone, it leaves a red streak. Hematite was often used as seal
stones, cut as intaglio. It is also used as beads and is faceted, carved
or cut as a cabochon for use as a gemstone. The ancient Egyptians carved
hematite into scarabs. Hematite is found in England, Mexico, Australia,
Brazil, and the Lake Superior region of North America.
Herkimer diamonds are clear, lustrous, doubly terminated crystals of quartz
- they are not true diamonds. These brilliant stones are also called "Middleville
Diamonds" or "Little Falls Diamonds." Herkimer diamonds
have a hardness of 7. This stone is found in Middleville and Little Falls,
Herkimer County, New York, USA.
Hessonite (also called "cinnamon stone") is a cinnamon-brown
to orange gemstone variety of grossular garnet. Hessonite's formula is
Ca3Al2Si3O12; manganese that gives it its characteristic brown color.
This transparent stone has a hardness of 6.5 - 7 and a specific gravity
of 3.6. Hessonite is found in Sri Lanka, Brazil, Madagascar, Canada, and
California, USA. This stone is not enhanced.
Hobe Cie is a costume jewelry company that was founded by William Hobé
in New York in the 1930's. William Hobe had immigrated to the US from
France, where his family had made fine jewelry for generations. Hobe jewelry
was used in showgirl costumes in the Ziegfeld Follies (Hobe supplied many
of the costumes themselves - this was his original business in the US).
Florence Ziegfeld (who founded the Ziegfeld Follies) was probably the
first person to use the term "costume jewelry." Hobe jewelry
was used in many Hollywood movies. Hobe produced very high quality (and
very high priced) jewelry for upscale stores, often using semi-precious
stones (like turquoise, lapis lazuli, jade, and agate). In the 1940's,
the Hobe slogan was "Jewels of legendary splendor." The Hobe
company is still producing costume jewelry.
Hook And Eye Clasp
A hook and eye clasp is a simple and ancient jewelry fastener that is
composed of a hook and a circular piece that the hook can latch onto.
It is used to attach the two ends of a necklace or bracelet.
Howlite is a soft, white to gray mineral that takes dye very easily, and
can be dyed to imitate turquoise very well (and is sometimes unscrupulously
sold as turquoise). Howlite was named for its discoverer, Henry How, a
Nova Scotia geologist.
Hyacinth is a semi-precious stone that is also known as jacinth. it is
a lustrous orange-yellow, orange-red, or yellow-brown type of zircon.
Hyacinth has a hardness of 7.5 and a specific gravity of 4.65. Sometimes,
topaz and grossular garnet of this color are also referred to as hyacinth
(this can be very confusing). Hyacinth is mined in Sri Lanka. Even more
confusing is the origin of the name, which comes from the Greek hyakinthos,
which refers to blue gemstone.
Hyacinth opal (also known as girasol) is a yellow or orange type of precious
opal. In this opal, the play of colors seems to come from within the stone,
like a floating light, and seems to follow the light source.