I wouldnt be worried about building an addition. Not when a LB of gold today is trading for 12,800. That be alot of bread for a pound. Im my neck of the woods, that LB of gold is worth roughly 32 "onions" as we used to say back in the covert high school days.
Gold is a bit different. You trade it in troy ounces/lbs. A pound has 12 ounces. The troy ounce is bigger than the regular ounce.
It still means a shoebox of K-rands is worth much more than a normal house, so you won't be stacking bars of gold on pallets, in your new" Gold room".
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Troy weight
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Troy ounce is a traditional unit of
gold weight.
Troy weight is a system of
units of
mass customarily used for
precious metals,
black powder, and
gemstones.
Named after
Troyes, France, the troy system of weights was known to exist in medieval times. One
cubic inch of distilled water, at 62
°F (17
°C), and at a
barometric pressure of 30
inches of mercury, was determined to weigh 252.458 troy
grains (gr).<sup id="cite_ref-0" class="reference">
[1]</sup>
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[edit] Troy ounce
The
troy ounce (ozt) is 480 grains, somewhat heavier than an
avoirdupois ounce (437.5 grains).<sup id="cite_ref-dictionary.com_1-0" class="reference">
[2]</sup> A grain is exactly 64.79891
mg; hence one troy ounce is exactly 31.1034768
g, about 10 percent more than the avoirdupois ounce, which is exactly 28.349523125 g. The troy ounce is the only ounce used in the pricing of precious metals,
gold,
platinum, and
silver.<sup class="noprint Template-Fact">[
citation needed]</sup> The grain, which is identical in both the troy and avoirdupois systems, is used to measure arrow and arrowhead weights in archery and bullets and powder weights in ballistics. Grains were long used in medicine but have been largely replaced by milligrams.
[edit] Troy pound
The
troy pound (troy) is 5,760 gr (≈ 373.24 g, 12 ozt), while an avoirdupois pound is 7,000 gr (≈ 453.59 g).
There are 12 troy ounces per troy pound,<sup id="cite_ref-dictionary.com_1-1" class="reference">
[2]</sup> rather than 16 avoirdupois
ounces (oz) in the avoirdupois
pound (lb) as in the more common avoirdupois system. The avoirdupois pound is 14<sup>7</sup>⁄<sub>12</sub> (≈ 14.583) troy ounces, since troy ounces are larger than avoirdupois ounces.
In Scotland the Incorporation of Goldsmiths of the City of Edinburgh used a system in multiples of sixteen. (
See Assay-Master's Accounts, 1681-1702, on loan from the Incorporation to the National Archives of Scotland.) Thus there were 16 drops to the troy ounce, 16 ounces to the troy pound, and 16 pounds to the troy stone. The Scots had several other ways of measuring precious metals and gems, but this was the common usage for silver and gold.
[edit] Conversions
<table class="wikitable"> <tbody><tr> <th>Unit</th> <th>Grains</th> <th>Grams</th> </tr> <tr> <td>Troy pound (12 troy ounces)</td> <td>5,760</td> <td>373.241 721 6</td> </tr> <tr> <td>Troy ounce (20 pennyweights)</td> <td>480</td> <td>31.103 476 8</td> </tr> <tr> <td>Pennyweight</td> <td>24</td> <td>1.555 173 84</td> </tr> <tr> <td>Grain</td> <td>1</td> <td>0.064 798 91</td> </tr> </tbody></table> <table class="wikitable right" style="height: 220px;"> <caption><big>
English pounds</big></caption> <tbody><tr> <th rowspan="2">Unit</th> <th colspan="6">Pounds</th> <th colspan="3">Ounces</th> <th rowspan="2">Grains</th> <th colspan="2">Metric</th> </tr> <tr> <th>avdp.</th> <th>troy</th> <th>tower</th> <th>merc.</th> <th>lond.</th> <th title="rounded">metric</th> <th>avdp.</th> <th>troy</th> <th>tower</th> <th title="slightly rounded">g</th> <th title="rounded">kg</th> </tr> <tr> <th height="30">Avoirdupois</th> <td align="right">1</td> <td align="right"><sup>175</sup><big>⁄</big><sub>144</sub></td> <td align="right"><sup>35</sup><big>⁄</big><sub>27</sub></td> <td align="right"><sup>28</sup><big>⁄</big><sub>27</sub></td> <td align="right"><sup>35</sup><big>⁄</big><sub>36</sub></td> <td align="right">~<sup>10</sup><big>⁄</big><sub>11</sub></td> <td align="right">
16</td> <td align="right">14<s style="display: none;">+</s><sup>7</sup><big>⁄</big><sub>12</sub></td> <td align="right">15<s style="display: none;">+</s><sup>5</sup><big>⁄</big><sub>9</sub></td> <td align="right">7000</td> <td align="right">~454</td> <td align="right">~<sup>9</sup><big>⁄</big><sub>20</sub></td> </tr> <tr> <th height="30">Troy</th> <td align="right"><sup>144</sup><big>⁄</big><sub>175</sub></td> <td align="right">1</td> <td align="right"><sup>16</sup><big>⁄</big><sub>15</sub></td> <td align="right"><sup>64</sup><big>⁄</big><sub>75</sub></td> <td align="right"><sup>5</sup><big>⁄</big><sub>6</sub></td> <td align="right">~<sup>3</sup><big>⁄</big><sub>4</sub></td> <td align="right">13<s style="display: none;">+</s><sup>29</sup><big>⁄</big><sub>175</sub></td> <td align="right">
12</td> <td align="right">12<s style="display: none;">+</s><sup>4</sup><big>⁄</big><sub>5</sub></td> <td align="right">5760</td> <td align="right">~373</td> <td align="right">~<sup>3</sup><big>⁄</big><sub>8</sub></td> </tr> <tr> <th height="30">Tower</th> <td align="right"><sup>27</sup><big>⁄</big><sub>35</sub></td> <td align="right"><sup>15</sup><big>⁄</big><sub>16</sub></td> <td align="right">1</td> <td align="right"><sup>4</sup><big>⁄</big><sub>5</sub></td> <td align="right"><sup>3</sup><big>⁄</big><sub>4</sub></td> <td align="right">~<sup>7</sup><big>⁄</big><sub>10</sub></td> <td align="right">12<s style="display: none;">+</s><sup>12</sup><big>⁄</big><sub>35</sub></td> <td align="right">11<s style="display: none;">+</s><sup>1</sup><big>⁄</big><sub>4</sub></td> <td align="right">
12</td> <td align="right">5400</td> <td align="right">~350</td> <td align="right">~<sup>7</sup><big>⁄</big><sub>20</sub></td> </tr> <tr> <th height="30">Merchant</th> <td align="right"><sup>27</sup><big>⁄</big><sub>28</sub></td> <td align="right"><sup>75</sup><big>⁄</big><sub>64</sub></td> <td align="right"><sup>5</sup><big>⁄</big><sub>4</sub></td> <td align="right">1</td> <td align="right"><sup>15</sup><big>⁄</big><sub>16</sub></td> <td align="right">~<sup>7</sup><big>⁄</big><sub>8</sub></td> <td align="right">15<s style="display: none;">+</s><sup>3</sup><big>⁄</big><sub>7</sub></td> <td align="right">14<s style="display: none;">+</s><sup>1</sup><big>⁄</big><sub>16</sub></td> <td align="right">15</td> <td align="right">6750</td> <td align="right">~437</td> <td align="right">~<sup>7</sup><big>⁄</big><sub>16</sub></td> </tr> <tr> <th height="30">London</th> <td align="right"><sup>36</sup><big>⁄</big><sub>35</sub></td> <td align="right"><sup>6</sup><big>⁄</big><sub>5</sub></td> <td align="right"><sup>4</sup><big>⁄</big><sub>3</sub></td> <td align="right"><sup>16</sup><big>⁄</big><sub>15</sub></td> <td align="right">1</td> <td align="right">~<sup>14</sup><big>⁄</big><sub>15</sub></td> <td align="right">16<s style="display: none;">+</s><sup>16</sup><big>⁄</big><sub>35</sub></td> <td align="right">15</td> <td align="right">16</td> <td align="right">7200</td> <td align="right">~467</td> <td align="right">~<sup>7</sup><big>⁄</big><sub>15</sub></td> </tr> <tr> <th height="30">Metric</th> <td align="right">~<sup>11</sup><big>⁄</big><sub>10</sub></td> <td align="right">~<sup>4</sup><big>⁄</big><sub>3</sub></td> <td align="right">~<sup>10</sup><big>⁄</big><sub>7</sub></td> <td align="right">~<sup>8</sup><big>⁄</big><sub>7</sub></td> <td align="right">~<sup>15</sup><big>⁄</big><sub>14</sub></td> <td align="right">1</td> <td align="right">~17<s style="display: none;">+</s><sup>3</sup><big>⁄</big><sub>5</sub></td> <td align="right">~16</td> <td align="right">~17<s style="display: none;">+</s><sup>1</sup><big>⁄</big><sub>7</sub></td> <td align="right">~7716</td> <td align="right">500</td> <td align="right"><sup>1</sup><big>⁄</big><sub>2</sub></td> </tr> </tbody></table> The troy system was used in the
Apothecaries' system, but with different further subdivisions.