Tagua - a success story
Since 1990, when the ban on trading ivory came into
effect, vegetable ivory has celebrated a veritable comeback.
Some members of
the arecaceae (palm plants) family, e.g. phytelephas marcocarpa und phytelephas aequatorialis
produce so-called vegetable ivory. The name derives from the greek phyton for "plant" and elephas
which evidently needs no translation. Hardly has a nickname been more justified, as a glance at the physical data
given below will testify.
This very attractive plant prospers in the humid rainforests of the Central and South Americas,
from Panama to Ecuador and grows to the stately height of 10 meters.
Female
specimens of the Ivory-nut Palm, as it is commonly called, bear fruits reaching the size of a watermelon and
weighing up to 10kgs. The fruits grow in clusters, so-called cabezas, containing 6 to 9 seeds each, which
can be up to 15cms in length. The majority of these "nuts", however, measure 4 to 6 cm. In Ecuador, the main
producing region, these nuts are called taguas, a name which quickly took hold in international trade.
Freshly harvested taguas contain a milky fluid, not unlike coconut milk and
equally potable, and need to dry in the sun for several months. During that drying period the milky fluid
solidifies and reaches its final hardness.
Below table illustrates how close the pyhsical
data of vegetable and animal ivory are.
|
|
Refractive Index
|
Mohs Hardness
|
Specific Gravity
|
|
Tagua-nut
|
approx. 1,54
|
approx. 2 ½
|
1,40 – 1,43
|
|
Ivory
|
approx. 1,54
|
2 ¼ - 2 ¾
|
1,70 – 1,90
|
After
drying the taguas are released from their horned husk and now resemble animal ivory in structure and colour to a
most astounding extent.
A single female Ivory-nut palm produces as much
"ivory" per annum as a cow elephant in its entire life. Because taguas are actually seeds and the plants do not
have to be cut down for harvesting, production is sustainable and ecologically sound.
Taguas can
be drilled, cut, carved and dyed and take a very high polish. The multi-purpose applicability along with stable
supply and low prices (today a 4cm unpolished nut does not cost more than 2 to 5 Euro) made them a highly sought
after commodity until the rise of even cheaper plastics. For the producing countries taguas were an important
source of foreign exchange.
Taguas were made into jewellery,
chess-men, billard balls, dice, buttons and much more. In the USA alone there were several factories producing
tagua buttons. In fact in peak times 20% of all buttons produced in the United States were made of taguas. In the
American civil war uniform buttons of the North (the Blue) were made of taguas, a fact much appreciated by snipers
of the Confederate States of the south (the Gray) because the highly polished and well-reflecting buttons made
first class targets.
With the rise of cheap plastics from the 1950ies on, demand for vegetable
ivory quickly fell into insignificance. Since the ban on ivory trade came into effect in 1990 sales figures
fortunately have been rising steadily. In the producing countries co-operatives were founded which support the
local population in growing, processing and marketing. Tagua production has again become an important industry and
economic foundation for a number of communities.
So, if you are a goldsmith planning some inlay job,
your old piece of ivory has been used up and there is no camel bone at hand, why not use a tagua-nut?
