Gold Filled equals what Karat? CyberDan?

[billjustbill]

Recently, I was picking the brain of a fellow that deals with PMetal scales. I was asking him if he could design a caculator program/button for "Gold Filled", as in 1/20, 14kt, Gold Filled jewelry.

While considering the addition of a single button to compute the amount and worth of a piece of gold filled jewelry based on its weight and "honest" karat markings, he said just to consider the following:


1/20 12K ===> .5K
1/20 14K ===> .7K
1/10 10K ===> 1K

If a person uses the amounts he listed, I'm wondering if the data he supplied matches what a person has received from a refinery?

Any input CyberDan?

Regards,

Bill

 

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[austin]

Haven't found anyone yet who would take gold filled. Maybe after the election when the economy gets worse.

 

[clorox]

1/20 12k should be equivalent to 0.6K, but the others look right.

I think the formula would be:

Total gold = (Marked karat / 24) * (Marked fraction) * weight

 

[diggummup]

Don't know if you've seen this gold filled calculator yet but here it is-
Gold Filled Calculator

I found an unusual mark the other day, a mechanical pencil marked 1/10 of 16k. That'd be 1.6k.

 

[jerseyben]

As Diggum said above, there is already a well known GF calculator available online. Easiest way to buy GF is to treat it the same as sterling.

 

[GNS-Sam]

diggummup
These kind of GF marking usually turns out to be plated or HGE.

I too, treat and buy GF as if it were sterling silver. There are few more point to know while buying GF scrap.
I wrote about it in this article:
What is gold filled and how to calculate its scrap value?

 

[diggummup]

diggummup
These kind of GF marking usually turns out to be plated or HGE.

I too, treat and buy GF as if it were sterling silver. There are few more point to know while buying GF scrap.
I wrote about it in this article:
What is gold filled and how to calculate its scrap value?

Just wanted to say welcome to Treasurenet Sam.

 

[GNS-Sam]

Thanks mate. Happy to be here.

Though i'm afraid i have very little to offer in the way of treasure hunting, if anyone has any questions about recovery & refining of gold, silver and PGM's i'de be happy to help if i can.

 

[clorox]

Thanks mate. Happy to be here.

Though i'm afraid i have very little to offer in the way of treasure hunting, if anyone has any questions about recovery & refining of gold, silver and PGM's i'de be happy to help if i can.

Do you have any idea what "10K CTR" would mean? Found it stamped into the bridge of some old glasses

 

[diggummup]

Do you have any idea what "10K CTR" would mean? Found it stamped into the bridge of some old glasses

I would guess it stands for "center" but that's only a guess, they look rimless. You can try to contact them, they are still in business- Shuron Ltd. / Shuron.com

 

[GNS-Sam]

Do you have any idea what "10K CTR" would mean? Found it stamped into the bridge of some old glasses

I'm not familiar with this marking (CTR).

The best way to tell for sure is with an acid jewellry test kit. Though it only make sense that if the arms are GF, then the center piece would be too.
If you have such kit, or access to nitric acid, i could guide you to the process of testing. But it may not be necessary.

First thing first, try to file the metal about half way in and look with a loupe if there are different layers and if so, how thick they are.
This should provide you a pretty good idea if what you are looking at i.e. plated, GF or solid.
If you can't see any color differences through the cut, it may not necessarily indicate that this is solid gold piece, it maybe plating/GF over yellow brass. (that's where the acid comes in handy)

 

[bluehunter1973]

it basically means carat

 

[GNS-Sam]

it basically means carat

Hi bluehunter


I doubt that it Sir.
As Carat is a weight measurement mostly used in the diamonds and gems industry.
And Karat is a purity scale, exclusively used for gold jewellry grading.