Diamonds

[bigalathenstn]

what do diamonds look like in the rough when you dredge them out of a creek? Im finding small clear,pink, and yellow gems in the sluice on my dredge, they are mostly round and some you can see through and some are milky,and they are pretty heavy because the stay right in with the black sand and do not wash out of the sluice,I tried to take a picture but they dont show up good, they are small, bout 1/4 the size of a match head or smaller.Im dredging in the Appalachian mountains in SE Tennessee if that helps.Does anybody have a picture of some diamonds that they have dredged up?
thanks

 

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[Lookin]

Sounds like you might be finding garnets. They come in a variety of colors and will stick with the black sands. Of course, maybe you do have diamonds!

 

[49erjohn]

bigalathenstn, take them to any jeweler or pawn shop and ask them to test them. here in michigan at the ann arbor coin shop they have a light meter they use to test diamond. i have had a lot of rocks tested from all over the US. they can tell you right away. hope you have the real one! ! ! JOHN

 

[jewelerdave]

most jewelers and pawn shops have diamond testers, They never lie. it runs a heat current though the stone and if its diamond, it will say so, if not, its not.
Most likely its garnet, Sapphire or any number of other colored gem stones, But you never know, we do have diamonds in this area and once and a while a real one pops up. (Colorado/Wyoming border)

 

[DanB]

a friend told me that they are finding diamonds around the Mt Saint Helen's areas......good quality too. anybody find any?

db

 

[pulltab hatr]

Hey,
I think I am finding the same thing as you in my pan up here in Central Ohio.Some are kinda clear while others have a yellowish color to them.I tested one with my diamond tester and nothing.So I am not sure what they are.I thought they were possibly diamonds as well.Let us know what you find out.

 

[bigalathenstn]

stupid jewerly store, they guy told me he couldnt test these,said they were probaly garnets or rose quartz,so im right back where i started from square 1

 

[Nashoba]

stupid jewerly store, they guy told me he couldnt test these,said they were probaly garnets or rose quartz,so im right back where i started from square 1

Not much of a jeweler if he can't test a diamond~
~Nash~

 

[bigalathenstn]

tell me about it lol and he wasnt friendly at all ,, ill not go back to that place.i think he got mad because i woulndt sell him my gold for $12 a gram

 

[surfin]

If you are finding garnets and small colored gems you are near a place that has diamonds. Most Diamonds come from a deep shaft or vent durring plate shifting and volcano forming. There doesnt have to be a volcano near you but a fault line that may have vented or rolled over instead of sinking. When these tubes stop venting they ussually fill with water or soil of the millenia and that is where a diamond shaft would be. Be advised that Garnets can travel hundreds of miles from there vent so what the pros do is the test concentrations. The more you find the closer you are. Until you are ontop of it. Thats how diamond mines are found now days in the US and Canada. I would say its possible and likely that you are down stream from a vent. If your stream comes from a high altitude then drive as close as you can to the top and take a sample.

TN could have diamonds but none have been found as of yet. But dont get discouraged because they didnt know there were diamonds in Missouri and Arkansas until the mid 1900's.

As for central Ohio. Thats possible to. We had active faults prior to the last couple of Ice ages but its more likely that its Glacier push from areas in Canada because OH has no other natural gem stones.

Ian

 

[Hoser John]

The June issue of the ICMJ had a great article with everything you'll ever need to know about diamonds.John

 

[jewelerdave]

If you are finding garnets and small colored gems you are near a place that has diamonds. Most Diamonds come from a deep shaft or vent durring plate shifting and volcano forming. There doesnt have to be a volcano near you but a fault line that may have vented or rolled over instead of sinking. When these tubes stop venting they ussually fill with water or soil of the millenia and that is where a diamond shaft would be. Be advised that Garnets can travel hundreds of miles from there vent so what the pros do is the test concentrations. The more you find the closer you are. Until you are ontop of it. Thats how diamond mines are found now days in the US and Canada. I would say its possible and likely that you are down stream from a vent. If your stream comes from a high altitude then drive as close as you can to the top and take a sample.

TN could have diamonds but none have been found as of yet. But dont get discouraged because they didnt know there were diamonds in Missouri and Arkansas until the mid 1900's.

As for central Ohio. Thats possible to. We had active faults prior to the last couple of Ice ages but its more likely that its Glacier push from areas in Canada because OH has no other natural gem stones.

Ian

Garnets dont always mean diamonds.
If you find garnets and chrome diopside its defiantly worth taking a closer look. If the garnets are analyzed and found to be in the chemical composition known as G10 type garnets. its defiantly worth taking a closer look. Its this type of garnet that correlates to what is known as the diamond stability field. Diamonds do burn/oxidize when they are in the magma, If the pipes flow is high in CO2 it will preserve the things and they are trapped in the rock. not enough CO2 and more 02 it just makes the diamonds into CO2 as diamonds are just carbon.

Of course around here finding Kimberlite pipes is pretty easy, they are exposed on the surface and the indicator minerals are EVERYWHERE! problem is the pipes are small, and some of them barren of diamonds...but some have been found up to 27 carats gem grade. Some of them are just too low in diamonds per tone of rock to be worth going after. Some of them are so worn down the diamonds could be anywhere.

Despite all this and the fact that gem grade stones have been found, no one round here is looking for them...expect me on the weekends.

 

[AU Seeker]

I have recently read that most (90%) diamonds will "glow" under a UV (blacklight) light, I haven't tried it but it worth a try.

Skip

 

[jewelerdave]

its called florescence, most diamonds do. If you take a "good" one out into the sun and it looks cloudy, its not a good thing, the less florescence in a stone the higher the premium for that stone as the florescence can interfere with the stones play of light.

 

[russau]

yep John that is a real good artical that Scott Harn has in his ICMJ. thats one subscription that ill never be without!