I had always assumed amber was a resin and then got fossilised. If Hyrax pee can be fossilised and then tinctured, then it would follow that amber should work in technical terms, but as there would appear to be very little smell in terms of the amber substance before tincturing, then the tincture could not smell very much even if it did work. I cannot see however that just a few weeks would prove anything at all. I would imagine a year in tincture would be needed at least.
I found this online:-
Composition and formation
Amber is heterogeneous in composition, but consists of several resinous bodies more or less soluble in alcohol, ether and chloroform, associated with an insoluble bituminous substance. Amber is a macromolecule by free radical polymerization of several precursors in the labdane family, e.g. communic acid, cummunol, and biformene. These labdanes are diterpenes (C20H32) and trienes, equipping the organic skeleton with three alkene groups for polymerization. As amber matures over the years, more polymerization takes place as well as isomerization reactions, crosslinking and cyclization.
The average composition of amber leads to the general formula C10H16O.
Molecular polymerization, resulting from high pressures and temperatures produced by overlying sediment, transforms the resin first into copal. Sustained heat and pressure drives off terpenes and results in the formation of amber.
People use it for violin strings and looking online, the dissolving options people have tried when using it for bows seem to have been these:-
1) - Acetone, followed by naphtha, then crushed and the volatiles boiled off.
2) - Chloroform (Used when releasing the insects for study and takes about two hours apparently)
3) - From Violin Varnish and how to make it by G. Foucher 1911 - "In its natural state it is not soluble in alcohol nor essence of turpentine nor essential oils. It can, however, be dissolved by the following process. Place some in a clean earthenware vessel and heat it gradually, when melted pour on to a marble slab, when it becomes hard again reduce it to powder. It can then be readily dissolved in spirit, essence of turpentine and also in all the oils extracted by the distillation of tar." (Found from another persons posting only)
Someone else said that the heating is supposed to change the chemical bond, rendering it dissolvable.
4) - alcoholic solution of potash.
(I cannot vouch for the success of any of these but am just repeating what I have discovered online)
Still reading.... and it appears that you must first heat it to between 300 and 500 degrees, depending on the amber type, then crush it and it will then dissolve in the alcohol (apparently).