Editing v0.34 Talk:Gem

Just FYI, dwarves can now polish non-gemstone rocks into cabochons in the jewelers workshop. Even slate!--[[User:Auric|Auric]] 18:26, 14 March 2012 (UTC)

== Gem cuts ==

If I'm reading it correctly, raw/objects/entity_default.txt defines what cuts of gem a civ can produce:

{| class="wikitable"
! &nbsp;||Dwarf||Human||Goblin||Elf / Kobold /<br />Animal men
|-
!STONE_SHAPE:
|
*OVAL_CABOCHON
*ROUND_CABOCHON
*CUSHION_CABOCHON
*RECTANGULAR_CABOCHON
|
*OVAL_CABOCHON
*ROUND_CABOCHON
*CUSHION_CABOCHON
*RECTANGULAR_CABOCHON
|
*RECTANGULAR_CABOCHON
|
*OVAL_CABOCHON
|-
!GEM_SHAPE:
|
*OVAL_CABOCHON
*ROUND_CABOCHON
*CUSHION_CABOCHON
*RECTANGULAR_CABOCHON
----
*POINT_CUT_GEM
*TABLE_CUT_GEM
*SINGLE_CUT_GEM
*ROSE_CUT_GEM
*BRIOLETTE_CUT_GEM
*EMERALD_CUT_GEM
*MARQUISE_CUT_GEM
*OVAL_CUT_GEM
*PEAR_CUT_GEM
*SQUARE_BRILLIANT_CUT_GEM
*RADIANT_CUT_GEM
*TRILLION_CUT_GEM
*ROUND_BRILLIANT_CUT_GEM
*BAGUETTE_CUT_GEM
*TAPERED_BAGUETTE_CUT_GEM
*CUSHION_CUT_GEM
*OCTAGON_CUT_GEM
*SQUARE_CUT_GEM
|
*OVAL_CABOCHON
*ROUND_CABOCHON
*CUSHION_CABOCHON
*RECTANGULAR_CABOCHON
----
*POINT_CUT_GEM
*TABLE_CUT_GEM
*SINGLE_CUT_GEM
*ROSE_CUT_GEM
*BRIOLETTE_CUT_GEM
|
*RECTANGULAR_CABOCHON
----
*POINT_CUT_GEM
|
*OVAL_CABOCHON
----
|}
Based on this, is the article incorrect in its assessment of how cuts are decided? It would seem "brilliant" is never used alone, and "rose" isn't on our list. I would like someone to check my findings before I edit the article, since I'm not that experienced with looking into the raws. Thanks. --[[User:Timrem|timrem]] 01:09, 14 April 2012 (UTC)

== Moving large gems ==

Large gems can be used as bait in [[animal trap]]s, upon destruction of the animal trap, this gems is dropped next to where the animal trap was. So, this is a method for moving gems, though not a very reliable one. Also 'large gems' can be chosen as one of the types of 'finished goods' for a stockpile. Once a large gem is encrusted with other items, dwarves will move it to such a stockpile.

== Rarity of gems ==

I've done some tests with the '''prospect''' tool of DFHack on four different locations. Certain gems, like the grossulars and [[Goshenite]], which seem to spawn on marble, are exceedingly rare. Not found a single grossular, I only found Goshenite on 2 maps, one having 3 gems and the other having 133, being at most the third least abundant gem in the map.

I remember there was some sort of bug where a sort of mineral wouldn't spawn due to the presence of another (can't remember but I believe it's related with silver or tin), maybe this is related.

Also, I remember that gems increase the scarser mineral frequency is, although again I don't have the source for this, although it would make sense as most gems don't spawn within mineral clusters.

I could post the prospects (as I've piped them to text) but the map was custom-made, hence somewhat unreliable.--[[User:Doktoro Reichard|Doktoro Reichard]] ([[User talk:Doktoro Reichard|talk]]) 16:36, 11 January 2014 (UTC)

I've picked up the [http://www.bay12forums.com/smf/index.php?topic=79018.msg2063804#msg2063804 good work] made by Shandra, treated it according to gems, and found some results. However, those results are... ugly, to say the least. I'll try to supply the Excel spreadsheet, as graphing the results is really really ugly, but I can safely assume the following:

# Biomes affect the gem distribution. As I didn't find some varieties of [[Diamond|Diamonds]] or Agate in any of the samples, stands to reason that even by messing with mineral frequency one can't make gems appear where they don't belong (e.g. agates can only appear in sedimentary layers).
# [[Advanced_world_generation#Mineral_Scarcity|Mineral Scarcity]] affects the distribution in a strange way. Some gems like [[Onyx]] will only appear, and at low quantities, at the lowest setting (hence the biggest frequency), although this might be related to the former point. Other gems, such as [[Bandfire opal]] seem to have some sort of tiers, that actually increase with decreasing mineral frequency. And there are others that peak at intermediate ranges.

The dataset, however, is quite noisy, and fails because it's a single location, and as such can not encompass all different types of layers. If one were to take the maximum value of the gems in all the sets, it would come out something like the following:

{{Spoil_small|
AMETHYST	84773
ALMANDINE	76398
BROWN ZIRCON	73466
SPINEL_PURPLE	73371
RUBICELLE	73100
BLACK ZIRCON	73020
PINEAPPLE OPAL	72908
CHERRY OPAL	72752
OPAL_WHITE	72589
WAX OPAL	72493
OPAL_LEVIN	72478
OPAL_PINFIRE	72414
PIPE OPAL	72394
MILK QUARTZ	70570
SPINEL_RED	64513
MOSS OPAL	63742
QUARTZ_ROSE	49308
YELLOW ZIRCON	48020
PRASE	44369
ONYX OPAL	43648
RED ZIRCON	41437
SMOKY QUARTZ	38893
RESIN OPAL	37697
OPAL_CRYSTAL	32563
BONE OPAL	29050
GREEN ZIRCON	28195
LAPIS LAZULI	25090
MILK OPAL	24293
CRYSTAL_ROCK	19910
TANZANITE	18570
YELLOW SPESSARTINE	18486
CITRINE	18246
CLEAR ZIRCON	18073
JELLY OPAL	17982
OPAL_CLARO	17200
MORION	16048
JASPER OPAL	14722
RED TOURMALINE	14634
FIRE OPAL	14582
BLUE GARNET	14539
PINK TOURMALINE	14533
VIOLET SPESSARTINE	14506
SHELL OPAL	14297
OPAL_REDFLASH	14207
OPAL_HARLEQUIN	13818
HELIODOR	13092
BLACK PYROPE	12944
OPAL_PFIRE	12750
PRASE OPAL	12721
GOLD OPAL	12547
WOOD OPAL	12456
MORGANITE	12441
PYRITE	12369
AMBER OPAL	12028
OPAL_BLACK	12003
RED BERYL	11669
RHODOLITE	11637
CHRYSOBERYL	11560
CINNAMON GROSSULAR	11466
GREEN TOURMALINE	10247
INDIGO TOURMALINE	10225
OPAL_BANDFIRE	10154
MOONSTONE	10004
TOPAZ	9281
PERIDOT	9206
GOSHENITE	8956
SCHORL	8811
PINK GARNET	8719
CLEAR GARNET	8695
CLEAR TOURMALINE	8044
TURQUOISE	7716
EMERALD	7384
TSAVORITE	7160
ALEXANDRITE	6793
GOLDEN BERYL	6221
RED PYROPE	6148
CAT'S EYE	5985
HONEY YELLOW BERYL	5232
AQUAMARINE	3918
KUNZITE	3386
YELLOW GROSSULAR	2530
FORTIFICATION AGATE	2332
TIGEREYE	2285
BANDED AGATE	2276
GRAY CHALCEDONY	2273
CHRYSOPRASE	2266
CHRYSOCOLLA	2235
BLOODSTONE	2205
BLUE JADE	1852
WHITE CHALCEDONY	1653
SARD	1598
MELANITE	1566
RED GROSSULAR	1455
SUNSTONE	1394
TOPAZOLITE	1359
SARDONYX	1110
DIAMOND_FY	975
DIAMOND_LY	813
CARNELIAN	578
AVENTURINE	432
PINK JADE	389
BROWN JASPER	264
PICTURE JASPER	257
ONYX	254
WHITE JADE	233
DEMANTOID	196
GREEN JADE	142
YELLOW JASPER	121
LAVENDER JADE	101
RUBY	92
TIGER IRON	79
LACE AGATE	70
SAPPHIRE	17
PLUME AGATE	15
DENDRITIC AGATE	0
DIAMOND_BLACK	0
DIAMOND_BLUE	0
DIAMOND_CLEAR	0
DIAMOND_GREEN	0
DIAMOND_RED	0
DIAMOND_YELLOW	0
FIRE AGATE	0
MOSS AGATE	0
RUBY_STAR	0
SAPPHIRE_STAR	0
TUBE AGATE	0
VARISCITE	0
|Rarity of gems}}

In regards to what lead me here, [[Cinnamon grossular|Cinnamon grossulars]] happen to be infrequent (and not as rare as I thought), as it sits in the middle of the table, but as I said earlier, I did search some sites and found no evidence of it's existence. Also, these grossulars seem to appear ''only'' on Mineral Scarcity ranges nearing 25000 (e.g. Rare to Very Rare). This would benefit from a more extensive search, but for now this is what exists so far.--[[User:Doktoro Reichard|Doktoro Reichard]] ([[User talk:Doktoro Reichard|talk]]) 16:07, 12 January 2014 (UTC)
Latest revision		Your text
Line 222:		Line 222:

	In regards to what lead me here, [[Cinnamon grossular\|Cinnamon grossulars]] happen to be infrequent (and not as rare as I thought), as it sits in the middle of the table, but as I said earlier, I did search some sites and found no evidence of it's existence. Also, these grossulars seem to appear ''only'' on Mineral Scarcity ranges nearing 25000 (e.g. Rare to Very Rare). This would benefit from a more extensive search, but for now this is what exists so far.--[[User:Doktoro Reichard\|Doktoro Reichard]] ([[User talk:Doktoro Reichard\|talk]]) 16:07, 12 January 2014 (UTC)		In regards to what lead me here, [[Cinnamon grossular\|Cinnamon grossulars]] happen to be infrequent (and not as rare as I thought), as it sits in the middle of the table, but as I said earlier, I did search some sites and found no evidence of it's existence. Also, these grossulars seem to appear ''only'' on Mineral Scarcity ranges nearing 25000 (e.g. Rare to Very Rare). This would benefit from a more extensive search, but for now this is what exists so far.--[[User:Doktoro Reichard\|Doktoro Reichard]] ([[User talk:Doktoro Reichard\|talk]]) 16:07, 12 January 2014 (UTC)
−
−	Finally got around to add the .xls in a Dropbox. The file is [https://dl.dropboxusercontent.com/u/27314922/Dwarf%20Fortress/Gems2.xls here]. Besides the data presented above, there is data on all distributions by scarcity. It's very very ugly though.--[[User:Doktoro Reichard\|Doktoro Reichard]] ([[User talk:Doktoro Reichard\|talk]]) 14:55, 17 January 2014 (UTC)