FRPG random gemstone tables

GemStone Tables

There are a number of factors that contribute to the over all value of a stone. Most basic is the type of stone, and how highly prized that stone is to a society. Secondly is the Quality of the stone. This has to do with many aesthetic factors, as well as the stability of the structure of the crystal. Size is of course very important, and can be changed by being worked, and finally the quality of the cut of the stone greatly effects its value. This table is designed to represent all of these factors, thus giving a more accurate price and a more rich game feeling with description.

Use of this table is simply, but will require the keeping of good notes and perhaps a calculator. Simply start at the top table which is type of stone to get a base value for that gem. Proceed to roll on the Quality table, note the result, and figure the new value of the stone as modified by the result. Continue to the next tables as appropriate

Type of Stone

Percentile Roll	Type of Gemstone	Base Cost
1	Diamond	2500 gp
2	Ruby	2000 gp
3 - 4	Sapphire	1000 gp
5 - 6	Emerald	750 gp
7-8	Black Sapphire	1750 gp
9 - 12	Spinal	500 gp
13 -18	Garnet	250 gp
19 - 21	Aqua marine	750 gp
22 - 25	Amethyst	500 gp
26 - 31	Blood Stone	250 gp
32 - 37	Rose Quartz	300 gp
38 - 43	Azurite	150 gp
44 - 49	Moss Agate	100 gp
50 - 55	Hematite	100 gp
56 - 62	Blue Quartz	50 gp
63 - 68	Cats Eye	75 gp
69 - 70	Star Sapphire	1750 gp
71 - 78	Quartz	20 gp
79 - 84	Pearl *	50 gp
85 - 87	Black Pearl *	75 gp
88 - 94	Jasper	250 gp
95 - 100	Moon Stone	250 gp

Quality of the Stone

Roll	Quality of Stone	Value Multiplier
1 - 4	Horribly Flawed	1/4
5 - 85	Slightly Flawed	1/2
86 - 99	Near Perfect	X 1.5
100	Flawless	X 2

Size of the Stone

Roll	Size of Stone	Value Multiplier
1 - 10	Tiny	1/4
11 - 30	Small	1/2
31 - 93	Average	+/- 0
94 - 97	Large	X 2
98 - 99	Huge	X 4
100	Monsterous **	X 6

Quality of the Stone's Cut

Roll	Quality of Cut	Value Multiplier
1 - 5	Uncut	1/6
6 - 10	Aweful Cut	1/4
11- 21	Bad Cut	1/2
22 - 83	Average Cut	+/- 0
84 - 94	Good Cut	X 1.25
95 - 99	Very Good Cut	X 1.5
100	Masterful Cut	X 2

* Pearls are never "cut", only roll for size and quality.

** Monsterous sized stones are always considered to be uncut.

What follows are some suggested rules and guidelines for handling gemstones in a game.

Cutting an uncut stone reduces it size class by 1, and leaves behind 1D6 uncut stones of 3 size classes smaller than the original. Thus, there are no monstrous sized cut stones, and a larger stone can result in several smaller ones..

When cutting an uncut stone, roll the appropriate skill check and apply it to the table below to determine the workmanship of the job.

When taking a stone that has already been cut, and cutting it again in the hope of increasing the value with a better cut, roll a percentile dice. A result of 1-25 indicates that the new cutting can be done without altering the size class of the stone. A result of 26-100 indicated that the stone will reduce in size by one class, and leave behind some dust. If the cutting continues, roll the skill check, consult the table below, and figure the new values of it.

Results of Cutting basd on a Skill check roll

Results of Gem Cutting skill roll	Resulting Cut of the Gem
Failure by 3 or more	Aweful Cut
Failure buy 1 or 2	Bad Cut
Success	Average Cut
Success by 6	Good Cut
Success by 10	Very Good Cut
Success by 14 or more	Masterful Cut

The Value of a stone is generally the rate a dealer is willing to sell a stone at. Generally an honest gemstone dealer will purchase stones at 50% - 60% of their value. Dishonest dealers are another matter all together. There is of course the option of selling directly to the consumer for a more "fair" price if characters have the contacts to do such.

Here is a link to a page of a company that handles gemstones with some nice discriptions.

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