Conservation DistList Archives [Date] [Subject] [Author] [SEARCH]

Subject: Ivory

Ivory

From: Reshma Dijkstra <reshma.dijkstra>
Date: Thursday, October 4, 2001
James Tapley <jthandbook [at] aol__com> writes

>Several recently carved pieces of Siberian mammoth ivory have been
>accidentally stained with a red dye of unknown origin. The pieces
>were carved and damaged in St. Petersburg, Russia. Can anyone direct
>me to recent studies concerning the morphology and conservation of
>Siberian fossil ivory?

It's is very difficult to recognize the origin of ivory when treated
or curved. Ivory is composed of calcium-phosphate and protein. It's
very sensitive for dry and heat. (sunlight) When ivory turns yellow
than the best way is to put it is on a dark spot and it will turn
white again.

To clean you can use ethyl-alcohol or acetone with a few drops of
ammonia. To polish ivory you use champagne-chalk for a good shine.
Broken ivory can be fixed with PVAC-glue or epoxy resin. When the
surface shows a lot of cracks, you can impregnate it with PVAC-glue
dilute solution. (soluble in water) To protect the surface you can
use almond-oil

You can always ask some people of Natural historical museum, maybe
they know an answer to solve this problem.

    **** Moderator's comments: This message comes from a person who
    is not on the DistList and will not see any responses that are
    posted here.  Please respond directly to sender and if of
    general interest post it here as well

R. Dijkstra


                                  ***
                  Conservation DistList Instance 15:29
                  Distributed: Monday, October 8, 2001
                       Message Id: cdl-15-29-003
                                  ***
Received on Thursday, 4 October, 2001

[Search all CoOL documents]


URL: http://
Timestamp:
Retrieved: