Few minerals have been longer in favor for ornamental purposes than
amber. Among remains of the earliest peoples such as the Egyptians and
Cave-dwellers of Switzerland it is found in carved masses indicating
that it was highly prized. The Phenicians are said to have sailed to the
Baltic for the purpose of procuring it, while the Greeks’ knowledge of
it is indelibly preserved in our word electricity derived from their
word elektron. The high favor in which the ancients regarded amber has
hardly endured however to the present time. Were it not for its use for
mouthpieces of pipes and other smokers’ articles and the occasional
amber necklace to be seen, amber would hardly be known among the present
generation in our country.
Amber is a fossil gum of trees of the genus Pinus and is thus a
vegetable rather than mineral product. In color it is yellow, varying to
reddish, brownish and whitish. Its hardness is 2 to 2.5, it being
slightly harder than gypsum and softer than calcite. It cannot be
scratched by the finger nail but easily and deeply with a knife. It is
also brittle. Its specific gravity is scarcely greater than that of
water, the exact specific weight being 1.050-1.096. It thus almost
floats in water, especially sea water. It is transparent to translucent.
On being heated it becomes soft at 150 degrees and at 250 degrees to 300
degrees melts. It also burns readily and at a low temperature, a fact
which has given rise to the name of bernstein by which the Germans know
it, and to one of the Roman names for it, lapis ardens. Rubbed with a
cloth it becomes strongly electric, attracting bits of paper, etc. As
already noted, our word electricity comes from the Greek for amber, this
seeming to be one of the first minerals in which this property was
noted. Amber being a poor conductor of heat feels warm rather than cold
in the hand, contrary to most minerals. It is attacked but slowly by
alcohol, ether and similar solvents, a property by which it may be
distinguished from most modern gums and some other fossil ones. In
composition it is an oxygenated hydrocarbon, the percentages of these
elements being in an average sample, carbon 78.94, hydrogen 10.53 and
oxygen 10.53. The mineralogical name of amber is succinite, a word
derived from the Latin succum, juice. One of its constituents is the
organic acid called succinic acid.
The present source of most of the amber of commerce is the Prussian
Coast of the Baltic Sea, between Memel and Dantzig, although it is found
as far west as Schleswig-Holstein and the Frisian Islands and even
occasionally on the shores of Denmark, Norway and Sweden. From time
immemorial pieces of amber have been cast upon the shore in these
localities and their collection and sale has afforded a livelihood to
coast dwellers. Such amber is called sea stone or sea amber and is
superior to that obtained by mining, since it is usually of uniform
quality and not discolored and altered on the surface. Owing to its
lightness the amber is often found entangled in seaweed and the
collectors are accustomed to draw in masses of seaweed and search them
for amber. Amber so obtained is called scoopstone, nets being sometimes
used to gather in the seaweed. In the marshy regions men on horse-back,
called amber riders, follow the outgoing tide and search for the yellow
gum. It is also searched for by divers to some extent. From the earliest
times the title to this amber has vested in the State and its collecting
has been done either under State control or as at present when a tax is
levied by the government upon it. This tax is levied on the amber that
is mined as well as that obtained from the sea and brings a revenue at
the present time of about $200,000.
Up to 1860 the methods of procuring amber were largely confined to
obtaining it in the manner above noted. As it was evident however that
the sea amber came from strata underneath and that if either by dredging
or mining these strata could be reached a much larger supply could be
obtained, exploration was carried on by mining methods with successful
results, and the principal amount of the amber of commerce is now so
obtained. The strata as shown in the mines of Samland, the rectangular
peninsula of East Prussia where most of the mining is carried on, are:
First, a bed of sand; below this a layer of lignite with sand and clay,
and following this a stratum of greensand, fifty or sixty feet in
thickness. While all these strata contain scattered pieces of amber, it
is at the bottom of the greensand layer that the amber chiefly occurs,
in a stratum four or five feet thick and of very dark color. It is
called the “blue earth.” This stratum is of Tertiary age and there can
be no doubt that its amber represents gum fallen from pines which grew
at this period and whose woody remains are represented to some extent in
the layer of lignite. It is probably true as Zaddach remarks that the
amber has been collected here from older deposits. One of the most
interesting proofs of the vegetable origin of amber is the occurrence in
it of insects, sometimes with a leg or wing separated a little distance
from the body, showing that it had struggled to escape. These insects
include spiders, flies, ants and beetles, while the feather of a bird
has even been found thus preserved. Indeed the amber deposits have
furnished important contributions to our knowledge of Tertiary life.
Inasmuch as the pieces bearing such remains are valued more highly than
ordinary amber, unscrupulous persons have at times found profitable
employment in boring cavities into pieces of amber, introducing flies or
lizards into them and then filling up the hole with some modern gum of
the same color. It is said that all amphibious or water animals seen in
amber have been introduced in this way.
Besides the counterfeiting of the inclusions of amber there are several
substitutes for the gum itself. These are chiefly celluloid and glass,
the substitution of the former being dangerous if used for the
embellishment of pipes, on account of its inflammatory character.
Celluloid can be distinguished from amber by the fact that when rubbed
it does not become electric and gives off an odor of camphor instead of
the somewhat aromatic one of amber. It is also quickly attacked by
alcohol or ether, and when scraped with a knife gives a shaving rather
than a powder as amber does. Glass can be distinguished by its cold
feeling and greater specific gravity.
Besides these substitutes it has been found possible by heating and
pressing the scraps of amber not large enough for carving to make them
into a homogeneous mass which is sometimes sold as amber and sometimes
as amberoid. Amber is worked to desired shapes by turning it on lathes
or by cutting by hand. By heating it in linseed oil it becomes soft so
that it can be bent and often all opaque spots can be made to disappear
by such treatment. The amber which is most highly prized of any in the
world comes from Sicily. Eight hundred dollars have been paid for pieces
of this no larger than walnuts, making their value nearly equal to that
of diamonds. The beauty of the Sicilian amber consists in the variety of
colors which it displays, blood red and chrysolite green being not
uncommon, and the fact that these often exhibit a brilliant
fluorescence, glowing within with a light of different color from the
exterior. Chemically the Sicilian amber is not the same as the Prussian
as it contains less succinic acid and is somewhat more soluble. In other
respects it is not essentially different. It occurs chiefly on the
eastern and southeastern coasts being washed up in a manner very similar
to the Prussian amber.
Amber has been found in several places in the United States, but there
is little of commercial value. It is mostly connected with the
Cretaceous glauconitic or green sand deposits of New Jersey, fragments
being frequently found there. This amber is of yellow color but not so
compact or lustrous as foreign amber. Amber has also been reported from
the marls of North Carolina, some of the coal beds of Wyoming and in
connection with lignite in Alaska. In the latter region the natives are
said to carve it into rude beads.
Amber occurs in small quantities in several countries of Europe, such as
near Basel in Switzerland, near Paris in France, and near London in
England. It is also found in many parts of Asia, these localities being
a source of supply to the Asiatic countries such as China and India.
Occasionally amber is obtained from Mexico which has the beautiful
fluorescence of the Sicilian article, though the exact locality whence
it comes is not known. Specimens of carved amber are found among the
relics of the Aztecs and it is probable that they used it for incense.
The early use of amber by European peoples has already been referred to.
There are references to it in the most ancient literature and worked
masses of it are found among human relics of the greatest antiquity. Up
to comparatively modern times it was an important article of commerce
among widely scattered peoples and had much to do with bringing about
communication between them. Together with tin it was one of the chief
objects which led the Romans to penetrate the Gallic regions to the west
and north of the Mediterranean and Pliny says that “it had been so
highly valued as an object of luxury that a very diminutive human effigy
made of amber had been known to sell at a higher price than living men,
even in stout and vigorous health.” One of the most elaborate of the
Greek myths is that which accounts for the origin of amber. It runs in
this wise:—Phaethon, undertaking to drive the chariot of his sun god
father, Helios, lost control of his steeds and approaching too near the
earth set it on fire. Jupiter to stop him launched a thunder-bolt at
Phaethon and he fell dead into the Eridanus. His sisters lamenting his
death were changed into poplars and their tears became amber.
In the Odyssey one of Penelope’s admirers gives her an amber necklace,
and Martial compares the fragrance of amber to the fragrance of a kiss.
Milton writes of amber and Shakespeare mentions it both in “Love’s Labor
Lost” and “The Taming of the Shrew.”
Necklaces of amber are popular wedding presents among the peasants of
Prussia and they form an important feature of the ornaments worn by many
African chiefs.
The properties assigned to amber both as a charm and as a medicine have
been many. From the earliest times it has been used as an amulet, being
supposed to bring good luck and to protect the wearer against the evil
eye of an enemy. Necklaces of amber beads are used to this day as
preventive or curative of sore throat and the Shah of Persia wears
around his neck a cube of amber reported to have fallen from heaven in
the time of Mohammed, which is supposed to have the power of rendering
its wearer invulnerable. Amber was also taken internally in former times
as a cure for asthma, dropsy, toothache and other diseases and to this
day is prescribed by physicians in France, Germany and Italy for
different ailments.
The use of amber for artistic and decorative purposes has declined
considerably since the Middle Ages, but magnificent illustrations of its
employment for these purposes are to be seen in many European museums,
notably the Green Vaults of Dresden.
Though so soft and easily destructible a substance it endures with
ordinary care as well as the hardest stone, and works of art formed from
amber are as well preserved as any to be found.