goldbones

I've seen many people speak of it but never really seen anyone go into it or any detail of how its done and showed some math,  i did the following with essentially 3 types of metal, aluminium, 22ct and 24 ct, 22ct red( crown) gold is expected to have a density of about 17.5 while 24ct pure gold is expected to be around 19.3, while aluminium is 2.7:
In air (the normal weight checking on a scale):
Piece of aluminium= 1.5 grams
2015 Sovereign = 8.00 grams
1/2 ounce Krugerrand = 17.00 grams
Perth mint goat 1/2 ounce= 15.60 grams (see pic)
-------------------------------------------------------------
suspended in water (this is the actual test):
aluminium=0.95 grams
krug= 16.02 grams
Sov= 7.54 grams (see pic)
Goat= 14.80 grams (see pic)
--------------------------------------------------------
The math:
weight in air - weight in water = displacement
weight in air / displacement= specific gravity
So Aluminium 1.5 - 0.95= 0.55 (displacement)
1.5 / 0.55= specific gravity 2.72
Krug 17.00 - 16.02= 0.98
17.00/ 0.98= specific gravity 17.34
The goat has a specific gravity of 19.5
The sovereign has a specific gravity of 17.39
That's more accurate than x-rays and less destructive than just about any other method. Considering i'm not set up to lab perfect conditions  this is pretty accurate.
--------------------------------------------------------------------------------
So the specific gravity results in order again:
Aluminium= 2.72
Krugerrand= 17.34
Sovereign = 17.39
Perth Goat = 19.5 
 

I've seen many people speak of it but never really seen anyone go into it or any detail of how its done and showed some math,  i did the following with essentially 3 types of metal, aluminium, 22ct and 24 ct, 22ct red( crown) gold is expected to have a density of about 17.5 while 24ct pure gold is expected to be around 19.3, while aluminium is 2.7:
In air (the normal weight checking on a scale):
Piece of aluminium= 1.5 grams
2015 Sovereign = 8.00 grams
1/2 ounce Krugerrand = 17.00 grams
Perth mint goat 1/2 ounce= 15.60 grams (see pic)
-------------------------------------------------------------
suspended in water (this is the actual test):
aluminium=0.95 grams
krug= 16.02 grams
Sov= 7.54 grams (see pic)
Goat= 14.80 grams (see pic)
--------------------------------------------------------
The math:
weight in air - weight in water = displacement
weight in air / displacement= specific gravity
So Aluminium 1.5 - 0.95= 0.55 (displacement)
1.5 / 0.55= specific gravity 2.72
Krug 17.00 - 16.02= 0.98
17.00/ 0.98= specific gravity 17.34
The goat has a specific gravity of 19.5
The sovereign has a specific gravity of 17.39
That's more accurate than x-rays and less destructive than just about any other method. Considering i'm not set up to lab perfect conditions  this is pretty accurate.
--------------------------------------------------------------------------------
So the specific gravity results in order again:
Aluminium= 2.72
Krugerrand= 17.34
Sovereign = 17.39
Perth Goat = 19.5 
 

1/10th LOTR Crown.  I may just leave this as it is rather than breaking it out.
2012 Half Sovereign.  For some reason you don't see these very often although there were supposed to be 250,000 minted.  Came with a price tag but the collector in me is daft enough to pay it.

Sure send them round for dinner, i've set the cutlery on the table ready:
 
 

Sure send them round for dinner, i've set the cutlery on the table ready:
 
 

People who vandalise coins in this way should be sent round to @goldbones house dressed in stripes wearing a mask

Additionally this website calculator lets you calculate density in a given alloy composition, so you have a reference number rather than a guess:
http://www.handymath.com/cgi-bin/density.cgi?submit=Entry
 

I purchased it from quicktest UK, you can see in photos how its suspended below. I supose you could make a setup like this without spending like £100, but i'm too lazy for that, it's overpriced for what it is but they are the only ones who do it as far as i know.
For bullion dealers/coin dealers i'd suggest this : Densometer  product from china, which is a laboratory accurate automatic specific density balance, you stick the item on the top press a button then throw it in the tank below and press a button and it spits out SG value and can be programmed with various copper/silver ratios and other stuff.

I've seen many people speak of it but never really seen anyone go into it or any detail of how its done and showed some math,  i did the following with essentially 3 types of metal, aluminium, 22ct and 24 ct, 22ct red( crown) gold is expected to have a density of about 17.5 while 24ct pure gold is expected to be around 19.3, while aluminium is 2.7:
In air (the normal weight checking on a scale):
Piece of aluminium= 1.5 grams
2015 Sovereign = 8.00 grams
1/2 ounce Krugerrand = 17.00 grams
Perth mint goat 1/2 ounce= 15.60 grams (see pic)
-------------------------------------------------------------
suspended in water (this is the actual test):
aluminium=0.95 grams
krug= 16.02 grams
Sov= 7.54 grams (see pic)
Goat= 14.80 grams (see pic)
--------------------------------------------------------
The math:
weight in air - weight in water = displacement
weight in air / displacement= specific gravity
So Aluminium 1.5 - 0.95= 0.55 (displacement)
1.5 / 0.55= specific gravity 2.72
Krug 17.00 - 16.02= 0.98
17.00/ 0.98= specific gravity 17.34
The goat has a specific gravity of 19.5
The sovereign has a specific gravity of 17.39
That's more accurate than x-rays and less destructive than just about any other method. Considering i'm not set up to lab perfect conditions  this is pretty accurate.
--------------------------------------------------------------------------------
So the specific gravity results in order again:
Aluminium= 2.72
Krugerrand= 17.34
Sovereign = 17.39
Perth Goat = 19.5 
 

I've seen many people speak of it but never really seen anyone go into it or any detail of how its done and showed some math,  i did the following with essentially 3 types of metal, aluminium, 22ct and 24 ct, 22ct red( crown) gold is expected to have a density of about 17.5 while 24ct pure gold is expected to be around 19.3, while aluminium is 2.7:
In air (the normal weight checking on a scale):
Piece of aluminium= 1.5 grams
2015 Sovereign = 8.00 grams
1/2 ounce Krugerrand = 17.00 grams
Perth mint goat 1/2 ounce= 15.60 grams (see pic)
-------------------------------------------------------------
suspended in water (this is the actual test):
aluminium=0.95 grams
krug= 16.02 grams
Sov= 7.54 grams (see pic)
Goat= 14.80 grams (see pic)
--------------------------------------------------------
The math:
weight in air - weight in water = displacement
weight in air / displacement= specific gravity
So Aluminium 1.5 - 0.95= 0.55 (displacement)
1.5 / 0.55= specific gravity 2.72
Krug 17.00 - 16.02= 0.98
17.00/ 0.98= specific gravity 17.34
The goat has a specific gravity of 19.5
The sovereign has a specific gravity of 17.39
That's more accurate than x-rays and less destructive than just about any other method. Considering i'm not set up to lab perfect conditions  this is pretty accurate.
--------------------------------------------------------------------------------
So the specific gravity results in order again:
Aluminium= 2.72
Krugerrand= 17.34
Sovereign = 17.39
Perth Goat = 19.5 
 

In Blackpool so popped into Chards. Got them to match Baird's delivered price on the Lunar Monkey and couldn't resist picking up the Rooster Rabbit. Was a fair price.
 

Today i received not a coin but the royal mint publication on the gold sovereign history for £25, its about 11.5" x 9" 112 pages and is a very good quality hardback book, i've not read it cover to cover yet, but it details history of gold coinage leading up to the coin we know.
Has some great photos of earlier coins.

Today i received not a coin but the royal mint publication on the gold sovereign history for £25, its about 11.5" x 9" 112 pages and is a very good quality hardback book, i've not read it cover to cover yet, but it details history of gold coinage leading up to the coin we know.
Has some great photos of earlier coins.

Today i received not a coin but the royal mint publication on the gold sovereign history for £25, its about 11.5" x 9" 112 pages and is a very good quality hardback book, i've not read it cover to cover yet, but it details history of gold coinage leading up to the coin we know.
Has some great photos of earlier coins.

Now he mentions about an opinion on gold falling further if rates do indeed rise, however the whole reason it has fallen back from $1190 only a month ago is because they expect a rate rise in December, so if the rates actually do rise i'd expect gold to also rise "sell on the rumor and buy on the fact" or stabilize  if rates do not rise then it would probably rally back towards $1190.
 
Rates rising isn't going to boost the economy, rate rises are meant for when an economy is booming and to control inflation, well everything is tanking look at Rolls Royce today it nearly tanked 25% at one point and ended the day down 20%, this is a big name industrial blue chip heavyweight on its 4th consecutive profit warning.
Mining companies like glencore only came back from lows on the back of copper moving back up and sentiment presuming no rate rises , that will go south fast if metal prices continue to fall and rate rises happen given their debt pile.
Companies like Lonmin who are basically already broke will be sure to go into administration, that's the state of the economy its so bad that big blue chip companies will be destroyed by a 0.25% rise.
You would normally cut rates in this environment. 

Now he mentions about an opinion on gold falling further if rates do indeed rise, however the whole reason it has fallen back from $1190 only a month ago is because they expect a rate rise in December, so if the rates actually do rise i'd expect gold to also rise "sell on the rumor and buy on the fact" or stabilize  if rates do not rise then it would probably rally back towards $1190.
 
Rates rising isn't going to boost the economy, rate rises are meant for when an economy is booming and to control inflation, well everything is tanking look at Rolls Royce today it nearly tanked 25% at one point and ended the day down 20%, this is a big name industrial blue chip heavyweight on its 4th consecutive profit warning.
Mining companies like glencore only came back from lows on the back of copper moving back up and sentiment presuming no rate rises , that will go south fast if metal prices continue to fall and rate rises happen given their debt pile.
Companies like Lonmin who are basically already broke will be sure to go into administration, that's the state of the economy its so bad that big blue chip companies will be destroyed by a 0.25% rise.
You would normally cut rates in this environment.