Diamond Dealing

[Bluetech]

I've been collecting used industrial diamonds from work for a couple of years now, and was wondering if anyone knows anything about buying and selling diamonds. These were originally mounted but have been removed from the mounts. The diamonds we use are all just thrown away normally without a second thought, but I decided to start collecting them.
After watching a documentary on 'blood' diamonds, I'm a bit wary of just presenting a whole bunch of diamonds for sale. The documentary stated that many diamonds are sold for funding wars etc over seas. So registration is required of each diamond or something to that effect.

This is what I've got, note they have dark burn marks (from dressing grinding wheels) on most and just need a clean up


Any suggestions and help would be appreciated

[inteVIC]

dam thats alotta diamonds. Sure u could sell them for something

[Moclov]

Industrial diamonds are basically worthless as far as I know.
They're man-made and are really hard (the important bit for industrial use) but don't have the visual qualities of a "real" diamond (the bit that makes them $$$).

Sorry

[Bluetech]

There is only one cintered man made diamond there, we found the man made one were no where near good enough for the abuse we give them.

[Moclov]

Originally Posted by Bluetech

There is only one cintered man made diamond there, we found the man made one were no where near good enough for the abuse we give them.

If your work uses jewelery grade diamonds for grinding stuff, and just throws them out when they're finished... 8O

[Bluetech]

Originally Posted by Moclov

If your work uses jewelery grade diamonds for grinding stuff, and just throws them out when they're finished... 8O

lol no they are real but flawed diamonds. I'm fairly sure most are not of a grade to be considered good enough for jewelery as they have many imperfections in them. But a few by my eye through the microscope look not to bad.

[SK1TZ- EF]

Originally Posted by Bluetech

But a few by my eye through the microscope look not to bad.

Bit like XFILIA's Penis

sorry, I saw a quote, couldnt resist....

can they be re-cut or polished?

meh grind em up, sell as P

[wazzza]

industrial diamonds are the same as jewelry ones but are not clear.
thats why jewelry ones are so expensive and why you get varying costs for the same no. of caratsas the grade of diamond may be higher.

you can take them to any jewelry maker and have them cut and polished up and mounted but the stones themselves are almost worthless.

[Pnut]

What do you guys do? Tool and cutter grinders? It normally takes a fair bit of abuse to remove an industrial wheel dressing diamond from its mount, i have seen wheels destroyed before the diamond lets go even under the destructive hand of an apprentice, maybe leaving just a chip in the diamond at most!

Some of those are quite big, i am surprised you haven't come up with an ingenous way of re-mounting them to get more life out of them.

I am no expert but as i understand it the reason they are used in the industrial market is because the flaws are too deep to grind out economically. I have visited some diamond dressing factories in Europe years ago on an OE and it takes ages just to dress up the cheap ones let alone the expensive million $ ones.

Could get the brasso out and polish them up and make a getto bling bling necklace

[Bluetech]

The diamonds are used to dress SG grinding wheels which are used to grind M2 HSS. Once the diamond has lost its sharp point its no good for the SG wheels and leaves a poor finish. One diamond can last up to 3 days, and we have about 30 machines going 24hrs a day. Not all the machines have these bigger diamonds though. We have remounted and sharpened diamonds, but the cost to do this was not really worth it. New diamonds cost $80 - $170

[CRX_VTiR]

Scratch people you don't like's paint and windscreens with them.

[DrRubber]

Could get the brasso out and polish them up and make a getto bling bling necklace

owwww yea that would be ghettofabulous..........put my name down :wink:

[Pnut]

Originally Posted by badcf4

owwww yea that would be ghettofabulous..........put my name down :wink:

Or get them embedded in your teeth, gangsta stylz

Yeah M2 is pretty hard going on wheels, sounds like a pretty impressive setup though. Strange that you need a sharp edge to dress the wheel, must be the type of wheel as i thought the diamond didn't cut the grit off as much as rubbed it off so the sharp edge wasn't required. I am talking to standard wheels for surface and cylindrical grinding though.

[Bluetech]

We have about 13 centerless grinders, pretty placid old beasts. They are a bit nicer on diamonds, but the others are fairly hungry.

[dimsum]

Originally Posted by Bluetech

New diamonds cost $80 - $170

If thats the new price, they're probably worth squat now.

Gemlabs? They do valuations and may be able to tell you where to go or even tell you if they ar worth anything.

Cut and polish them into little diamonds and mount them all over your car/rims. bling bling

[inteVIC]

Where do u work and what do u do?

[David R]

Put them on trademe, some idiot wanna be gangster will pay heapd for them thinking theyre BLING!!

[gary]

Theres a diamond in my pants, you can add it to your collection if you want but it'll cost you.

[Andrew]

Originally Posted by Bluetech

We have about 13 centerless grinders, pretty placid old beasts. They are a bit nicer on diamonds, but the others are fairly hungry.

Cincinnati? One of our guys managed to loose a screwdriver into our centreless grinding wheel trying to push a pin off the wheels.

Took 5 people a good 200 hours each standing around looking at it and taking it a part before it was going again 8)

[laurasaur]

sorry buddy but they are worth piss all. ive been buying and selling diamonds for a while - small "seed" diamonds for pave and small decorative ring settings, and u can get some pretty nice quality small diamonds (1~3mm) for piss all.

aand im sure those are man made too - mad mades still cost something - about what you said id be very disturbed if they were real?? seems a bit of a waste

[Reaper_2000]

*Starts the bidding at $1*

lol