Global What is the specific gravity of precious metals and how does it affect the price

What is the specific gravity of precious metals and how does it affect the price


Have you acci­den­tal­ly seen a beau­ti­ful plat­inum ring and intend to get a copy of it, but in gold exe­cu­tion of the pre­cious met­al? Or do you want to dupli­cate ear­rings made of gold 585 from plat­inum raw mate­ri­als? Mod­ern jew­el­ry mas­ters will be able to ful­fill any whim, but at the same time, the price for the work can be an unex­pect­ed sur­prise for the cus­tomer. In this sce­nario, both the cost of a gram of met­al and its spe­cif­ic grav­i­ty play a sig­nif­i­cant role.

What it is?

Noble met­als in nature are prac­ti­cal­ly not observed in their purest form. As a rule, they con­tain var­i­ous impu­ri­ties that direct­ly affect the final price of jew­el­ry pro­duced from such raw mate­ri­als.

The alloy, where a small num­ber of oth­er addi­tions are observed, is char­ac­ter­ized by the high­est break­down — 999. From this it fol­lows that, for exam­ple, 999 gold should have a high­er cost than oth­er alloys. And it is this gold that will set the tone for pric­ing per gram of all pre­cious met­als.

Key features

Each of the pre­cious met­als has cer­tain phys­i­cal and mechan­i­cal para­me­ters. It is these indi­ca­tors that enable spe­cial­ists to des­ig­nate their so-called spe­cif­ic grav­i­ty. All jew­el­ry of the same vol­ume, made of dif­fer­ent met­als, dif­fer in their weight. The den­si­ty of each indi­vid­ual alloy is deter­mined by a spe­cial for­mu­la and has a great influ­ence on the cal­cu­la­tion of the spe­cif­ic grav­i­ty of the met­al.

At the same time, it should be not­ed that mak­ing jew­el­ry from pure met­al is very imprac­ti­cal. For exam­ple, gold and sil­ver are char­ac­ter­ized by exces­sive soft­ness, and there­fore they need to be improved. Increas­ing strength and wear resis­tance, chang­ing the tone of col­or, spe­cial­ists direct­ly influ­ence the sam­ple of raw mate­ri­als, which ulti­mate­ly affects the final cost of fin­ished jew­el­ry prod­ucts.

Specific gravity indicators of the most popular precious metals

If we talk about the phys­i­cal char­ac­ter­is­tics of noble met­als, then in this case, you should pay atten­tion to the fol­low­ing para­me­ters:

  • strength;
  • elec­tri­cal and ther­mal con­duc­tiv­i­ty;
  • plas­tic;
  • bright­ness and char­ac­ter­is­tic bril­liance.

It is the mea­sure­ment of these indi­ca­tors that is tak­en into account when work­ing with alloys in jew­el­ry. Not­ing the most com­mon met­als used as the main raw mate­ri­als, the fol­low­ing can be not­ed:

Gold is char­ac­ter­ized by a high degree of den­si­ty and grav­i­ty, which auto­mat­i­cal­ly puts it in 7th place among oth­er met­als. As already men­tioned, its only draw­back is soft­ness, which is “cor­rect­ed” by adding var­i­ous impu­ri­ties. It must be said that due to the high spe­cif­ic grav­i­ty of gold, its min­ing is very prof­itable.

This met­al, which is extreme­ly resis­tant to cor­ro­sion, is char­ac­ter­ized by low resis­tance. Despite the fact that it, like gold, is soft, its spe­cif­ic grav­i­ty and den­si­ty are also quite high.

  • Plat­inum - the spe­cif­ic grav­i­ty of this met­al is con­sid­ered one of the high­est — 21.45 g per cubic cen­time­ter.

Among oth­er things, it is char­ac­ter­ized by increased fire resis­tance and at the same time does not lend itself to defor­ma­tion process­es. The unique char­ac­ter­is­tics of plat­inum make it pos­si­ble to pro­duce alloys with a high con­tent of plat­inum in fin­ished prod­ucts.

Spe­cial den­si­ty tables for met­als and alloys allow jew­el­ers to accu­rate­ly deter­mine the future price of the item they will be work­ing with. These data are well known to spe­cial­ists, but not always known to ordi­nary con­sumers.


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