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Diamond_digger
12:27:33 Mon
Oct 22 2012

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So you want to prospect for diamonds?

OK we all like diamonds and who would not like to find a few?

So when you look for diamonds this might help!

A short description of How To Find Diamonds in a stream-bed.
Research is everything, there must be a known Kimberlite area upstream.

It is the oily layer on the outside of every diamond that cause it to remain dry.

However all is not lost! I have added a picture of a diamond sieve, the results and how to do it:
First you need a flat hard wood plastic surface covered with a thin hard carpet (The cheap ozite type Brown color will do)
This could be placed on two rocks/makeshift stand in the shadow Not in the sunlight.
Then you need a sieve as per photo.
A shovel
A small builder's trowel as per picture.
Two plastic bottles one full of Hydrofluoric acid and one empty (Check warning at the end)
One plastic tea sieve
A small bottle with screw cap to hold the diamonds

A strong back. OK all the gravel on the bedrock must be shoveled into the sieve, remove the large rocks Unless it glints!
Then you have to gravitate the heavy material to the center of the sieve. This is accomplished by dipping the sieve in water and rotating it fast from left to right make sure you do not spill any gravel over the sides. OK while you do this you will be bend over sieve in both hands and make a shaking motion up and down at the beginning of each half rotation in order to lift the gravel and help with the rotation. The heavy materials will settle in the middle of the sieve. After ten or so rotations (It gets easier) You have to see the gravel move from left to right in a circular motion then you know you are doing it right!

You need to drain the water out of the sieve by just resting it on a rock for a few seconds.
Now take the sieve over to your carpet covered (Table) in the shade and with one swift move upend the sieve on the carpet. Now shake the sieve and bang it lightly onto the table to dislodge all stones from the sieve.
If there are large diamonds in the middle of the sieve it will be easy to see and will be surrounded by black gravel/stones/Ilminite/feldspar etc.
You will see the diamonds no matter the color immediately it will pick up the sunlight and reflect it into your eyes! Like a torch being switched on at midnight! (Almost)
If there is one or even a few pick them up with a tweezers and place them in a plastic bottle. Many old timers Like me put the diamond in their mouths, it is a reliable way of testing whether it is a diamond or just a shiny crystal. However a diamond does not get wet a crystal does a diamond does net get warm either a crystal does!

OK lets say you did not see a diamond now use the trowel to attack the round flat topped pile of gravel carefully from the side and flatten it on the brown carpet looking carefully for a diamond, by shine shape and color.
The more diamonds you see in the rough the easier it gets. An experienced Digger will go through a pile in a matter of minutes. However till you are experienced take it easy. A small stone can pay for your mortgage!
If you find nothing do not despair look for the indicators if you see them keep going you will find a diamond at some point.
Wash all the gravel out of the stream-bed until you get to the bedrock and keep going. Diamonds can be anywhere as they do not behave the same as gold remember that
To test your diamonds right there in the field you can buy an Ultra Violet light that is battery operated. Diamonds in their natural form fluoresce blue it does not take steam from your breath or does not get warm so try a lighter if it burns your hand it's not a diamond!
So persistence is the way to go unless you can afford to build a proper wash-pan.
If you find a 5 ct stone you can pay for the manufacture and have some change left!
I will be happy to help just get hold of me anytime, get out there and do your research try and find rivers that run through known Kimberlite areas! Research is everything then stake your claim!


A BIG warning here!
Hydrofluoric Acid is the strongest out there do NOT get it on your hands or in your eyes YOU will LOOSE an eye if it splashes into your face. It is the only acid that can get rid of the oily layer and gravel and dirt still sticking to your diamond, it comes out stunning after the acid bath.
So wear goggles and gloves (Acid proof) when using the acid.
I buy two bottles and keep one empty I just dump the diamonds into one bottle then leave it overnight in the acid in the morning I use a plastic tea sieve to pour to acid out into the other bottle and catch the diamonds. I always do this in a non metallic sink.

  
billcosta_rica
22:34:03 Mon
Oct 22 2012

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Re: So you want to prospect for diamonds?

please keep the info coming, i donít know if there are any diamonds in central America, with all the volcanoes you would think there should be.

bill-cr

  
bedrocker
04:48:40 Tue
Oct 23 2012

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Re: So you want to prospect for diamonds?

Are you aware of any info suggesting that some diamonds maybe be found in peridotite, or garnet bearing peridotites in particular.....is there any updated sites that show known kimberlites in the US....thanks

  
Diamond_digger
10:21:48 Tue
Oct 23 2012

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Re: So you want to prospect for diamonds?

bedrocker,

Some of them do come with diamonds as the Finch mine in South Africa found. So I suggest you do a few hand washes and see if you can find any diamonds.
Have fun
Andy

  
InspectorTom
04:10:05 Thu
Oct 25 2012

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Re: So you want to prospect for diamonds?

Diamond digger,
Thanks for that great info...I did not see a photo of the sieve though...having difficulty with posting a pic?

Tom



---


 
 
Diamond_digger
09:28:08 Thu
Oct 25 2012

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Re: So you want to prospect for diamonds?

Hi Tom,
Sorry here it is!

Very similar to the gold classifying sieves.
Greetings
Andy
[1 edits; Last edit by Diamond_digger at 09:29:09 Thu Oct 25 2012]



[ Attached File: sieve.jpg - downloaded 30 times]
  
Diamond_digger
18:03:06 Wed
Oct 31 2012

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Re: So you want to prospect for diamonds?

bill_cr

Prospecting for diamonds is one thing, actually mining them is another. There are many things you should know when you mine for diamonds skills you learn while working with medium sized operations over many years.
You have to start with the right gear.
A sluice is not it.
A DMS plant is not it either (Break your diamonds up to %25
The only way to get your diamonds out of the ground is with the correct rotational PH wash plant and then you have to know how to operate one and if you make a mistake you will not find all your diamonds.
The speed of the rotation must be just right the thickness of the mud must be spot on and kept spot on all the time that means you must have a constant feed into the pans.
Trust me to learn this all over night is not possible. It does take a while.
Andy
[1 edits; Last edit by Diamond_digger at 22:35:01 Fri Nov 2 2012]

  
cubsqueal
05:50:24 Fri
Dec 7 2012

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Re: So you want to prospect for diamonds?


  
Diamond_digger
09:21:02 Fri
Dec 7 2012

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Re: So you want to prospect for diamonds?

No idea who wrote this on the website but there are a few flaws.
The word Diamond and Sluice should never ever be in the same sentence, not if you are serious about mining and finding diamonds.
Even big companies played with the idea for a while in Africa but they scrapped it. On the other hand it is a good way of ensuring the casual miner does not find a handful of diamonds. Promote a way to find the odd one suits the powers that be, no conspiracy theory either, the diamond supply is tightly controlled world wide by a Cartel.
However if you are serious about finding diamonds do your research.

Have fun out there
Andy

  
flintgreasewood
04:22:42 Wed
Jan 2 2013

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Re: So you want to prospect for diamonds?

Andy,
I have a trommel wash plant [see on Youtube..Eureka Gold Thief] that is equipped with a duplex jig. I've planned on using it for diamond prospecting here on the Wyo/Colo. border. Will this be a good way to go? Dan Hausel tells me there are literally billions of diamonds in the little creeks draining the kimberlite area.

  
ClickTheYellowChick
06:16:21 Wed
Jan 2 2013

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Re: So you want to prospect for diamonds?

Speaking of Diamond Hunting,
Got up early on NY Day no less, to watch my friend, Dave McCracken and his associates begin with a bang the Golconda Diamond reality show series on Animal Planet.
Dave found one and Sam the expedition leader found one.
The Geo had to go visit a 3rd party who turned one up in a "field he was working up in the hills."

Tiny little 1/2carat poor quality things they claimed were valued at $1500 to $2000 per each.

That is hard to believe...not the part that they found a couple little ones, but the values assigned to their tiny finds.

How do these on the fly valuations come about? Rappaport doesn't do raw pricing, too. Or do they?

  
Diamond_digger
11:39:39 Wed
Jan 2 2013

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Re: So you want to prospect for diamonds?

CTYC,
Yeah that does sound set up to me.. But then they do everything for good TV!
And the prices are way off the scale, bad quality 1/2 Carats if they do come from the area, would not be worth more than $100 to $200.
Remember TV shows is just that a Show to get ratings!
Rappaport give uncut/rough diamond prices but in order to get them you have to subscribe to their website and pay the price for the info and believe me it is not cheap!
And to interpret what they mean is not easy as well as it is charts and scales and calculations!
You just do not go into the field and find diamonds hahahaha It is not that easy and I know I have been mining for 20 odd years.

Flint,
I will look at your plant but as far as I know the Kimberlite pipes in that immediate area are already claimed and called Sloan, Shaeffer and Kelsey Lake maybe if you can find a bit of river down hill from those claimed areas you might get lucky. I hear disturbing a river bed is a big no no. So you will have to find the old river bed where the river used to flow millions of years ago and strip the topsoil to get to a layer of gravel and that can be pretty expensive.
Andy
[1 edits; Last edit by Diamond_digger at 11:53:25 Wed Jan 2 2013]

  
shaftsinkerawc
00:04:59 Thu
Jan 3 2013

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Re: So you want to prospect for diamonds?

Specific gravity of Diamonds are pretty low, I believe below that of garnet. Anything heavier than diamond would push them out of the jig if you were planning on collecting them on top of the jig screen. If you plan on collecting them through the screen then you will have a lot of other stuff in there to sort through.

  
Diamond_digger
14:52:55 Sat
May 18 2013

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Re: So you want to prospect for diamonds?

shaftsinkerawc

Diamonds will not stay in a sluicebox as they are way to light and it will be on a rare occasion that you find diamonds in the same place as gold. Usually diamonds wash further downstream to the opposite side of the river.
DD

  
shaftsinkerawc
17:31:09 Sat
May 18 2013

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Re: So you want to prospect for diamonds?

I don't know where you got sluicebox from DD but I was talking about using Jig's for recovery.

Can you expound and give us a lesson on your statement below?

"The only way to get your diamonds out of the ground is with the correct rotational PH wash plant and then you have to know how to operate one and if you make a mistake you will not find all your diamonds."

  
Diamond_digger
17:54:31 Sat
May 18 2013

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Re: So you want to prospect for diamonds?

Yes I can but it is very complicated to use the Pan and to explain it properly I have to stand next to one and show you.
Very few people can actually run such a pan these days.
DD

  
dredger
01:08:52 Sun
May 19 2013

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Re: So you want to prospect for diamonds?

Just found this, :confused:

http://www.minelinks.com/tools/jigs.html

testing,:smile:

  
dredger
01:19:03 Sun
May 19 2013

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Re: So you want to prospect for diamonds?


  
dredger
01:22:13 Sun
May 19 2013

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dredger
02:28:21 Sun
May 19 2013

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dredger
04:36:55 Sun
May 19 2013

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Re: So you want to prospect for diamonds?


  
Diamond_digger
08:36:31 Sun
May 19 2013

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Re: So you want to prospect for diamonds?

Jig's are interesting but pretty expensive to run so when you look into it further it is almost not worth the effort as it is very hands on and you need a lot of staff. Even then the Jig does not find all the stones.
DD

  
dredger
14:45:04 Sun
May 19 2013

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Re: So you want to prospect for diamonds?

I agree, :smile:

  

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