metalpopper
New member
Jason in Enid said:TID has no true correlation to karat stamp.
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Sorry J, but it does.....otherwise what's the science of metal detecting mean?
What you really are trying to say is, " Most detectorists don't understand the full rational behind the TID function.
The TID evaluation is the summation of ALL the parameters of the target involve, AND the detector's designed functionalities; principally, the frequency it employs, and the target's 'cumulative' electrical conductivity.....either homogeneous or bi-metal.
You mentioned but a few......
A 'genuine' say 9k ring can have a TID of maybe 8 to '80'......depending on whether its a child's size or a great big knuckle-duster.' and the gold is alloyed with nickel or copper or coconut-crap.
So let's repeat the fact of metal detecting.....Those who only dig by numbers, are rank amateurs who are still leaning what its all about.
We all had to learn; but today's forums are filled with BS and that can confuse newbies and extend the process.
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J in E:-
The purity, alloyed metals, size, mass, shape and any damage all affect TID. First, digging a ring from the dirt and it wasn't shiny is about 99% guarantee its fake. Seawater can corrode low karat gold but I've found old, plated rings that still looked great when dug from the soil.
I don't fully agree with your proposition of it being 99% likely fake.........matt