21k gold ring

Heavygold4me

Sr. Member
Jan 27, 2020
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1,442
South mississippi
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Detector(s) used
Nox 800 , Nox 600, Excalibur II, manticore
Primary Interest:
Beach & Shallow Water Hunting
Short beach hunt yesterday with the manticore using the m8 coil. Got a 35/36 signal and dug a 21k gold ring, weighs 3.31 grams. I’m hoping someone can help with the makers mark, I’ve not had any luck so far. It’s marked MOH21 and it has some personalized engraving inside the band (initials and a heart). I don’t have 21k acid but it holds 18 and 22k acid eats it away very slowly. Anyway I’m hoping there is someone on the forum that can shed some light on the makers mark.
 

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Unfortunately it is a very thick gold plate. I used a small triangle file on it and when you get deep enough you can see the base metal under the gold.
 

Rule of thumb, gold jewelry gets the expert treatment in manufacturing. Raised/sharp edges are removed, there won't be any machining marks, flaws are repaired, and the item is polished to a luster.
 

Try doing specific gravity test. Plating will not fool SG.
You will need a scale that reads in .01 grams.
Weight in air minus the weight in water.
Davide - the results into the the weight in air
This is the ratio that is the SP of the object.
There are tables on the internet and will tell the K of gold (approx 11 to 21) and all other metals.
 

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