40d:Gem

Small clusters of gems can be found strewn throughout the fortress. Gems can used to encrust furniture, craft goods, weapons, armor and ammunition, to create windows and as a source material for legendary artifacts. In addition, raw rock crystals are required to make crystal glass goods.

Value

Gems have base value of 3 in rough form, which is multiplied by appropriate value modifier from the table below. They gain value after they are cut in a jeweler's workshop. Cut gems have a base value of 5. Items can be decorated (encrusted) with cut gems; all such decorations have a value of 10 times the gem type's value multiplier. See Gem cutting and Gem setting

Varieties

Gems come in many varieties, with their own color and value multipliers:

Ornamental

Gem name	Value	Color	Found where	Found how
onyx	2×	@	Sedimentary	Small clusters
morion	2×	@	All stone	Small clusters
schorl	2×	@	Metamorphic, Sedimentary, Granite	Small clusters
lace agate	2×	@	Sedimentary	Small clusters
blue jade	2×	@	Alluvial	Small clusters
lapis lazuli	2×	@	Igneous intrusive, Marble	Small clusters
prase	2×	@	All stone	Small clusters
prase opal	10×	@	All stone	Small clusters
bloodstone	2×	@	Sedimentary	Small clusters
moss agate	2×	@	Sedimentary	Small clusters
moss opal	10×	@	All stone	Small clusters
variscite	2×	@	Bauxite	Small clusters
chrysoprase	2×	@	Sedimentary	Small clusters
chrysocolla	2×	@	Malachite	Small clusters
sard	2×	@	Sedimentary	Small clusters
carnelian	2×	@	Sedimentary	Small clusters
banded agate	2×	@	Sedimentary	Small clusters
sardonyx	2×	@	Sedimentary	Small clusters
cherry opal	10×	@	All stone	Small clusters
lavendar jade	2×	@	Alluvial	Small clusters
pink jade	2×	@	Alluvial	Small clusters
tube agate	2×	@	Sedimentary	Small clusters
fire agate	2×	@	Sedimentary	Small clusters
plume agate	2×	@	Sedimentary	Small clusters
brown jasper	2×	@	Sedimentary	Small clusters
picture jasper	3×	@	Sedimentary	Small clusters
smoky quartz	2×	@	All stone	Small clusters
wax opal	10×	@	All stone	Small clusters
wood opal	10×	@	All stone	Small clusters
amber opal	10×	@	All stone	Small clusters
gold opal	10×	@	All stone	Small clusters
citrine	2×	@	All stone	Small clusters
yellow jasper	2×	@	Sedimentary	Small clusters
tigereye	2×	@	Sedimentary	Small clusters
tiger iron	2×	@	Sedimentary	Small clusters
sunstone	2×	@	Basalt, Gneiss	Small clusters
resin opal	10×	@	All stone	Small clusters
pyrite	2×	@	All stone	Small clusters
clear tourmaline	10×	@	Metamorphic, Sedimentary, Granite	Small clusters
gray chalcedony	2×	@	Sedimentary	Small clusters
dendritic agate	2×	@	Sedimentary	Small clusters
shell opal	10×	@	All stone	Small clusters
bone opal	10×	@	All stone	Small clusters
white chalcedony	2×	@	Sedimentary	Small clusters
fortification agate	2×	@	Sedimentary	Small clusters
milk quartz	2×	@	All stone	Small clusters
moonstone	2×	@	Metamorphic	Small clusters
white jade	2×	@	Alluvial	Small clusters
jasper opal	10×	@	All stone	Small clusters
pineapple opal	10×	@	All stone	Small clusters
onyx opal	10×	@	All stone	Small clusters
milk opal	10×	@	All stone	Small clusters
pipe opal	10×	@	All stone	Small clusters
aventurine	3×	@	Sedimentary	Small clusters
turquoise	2×	@	Igneous extrusive, Kaolinite, Granite	Small clusters
rose quartz	3×	@	All stone	Small clusters
rock crystal	2×	@	All stone	Small clusters

Semi-Precious

Gem name	Value	Color	Found where	Found how
black zircon	20×	@	All Igneous, Metamorphic	Small clusters
black pyrope	20×	@	Metamorphic, Kimberlite	Small clusters
melanite	15×	@	Marble	Small clusters
indigo tourmaline	25×	@	Metamorphic, Sedimentary, Granite	Small clusters
blue garnet	30×	@	Metamorphic, Granite	Small clusters
tsavorite	30×	@	Marble	Small clusters
green tourmaline	20×	@	Metamorphic, Sedimentary, Granite	Small clusters
demantoid	30×	@	Chromite	Small clusters
green zircon	20×	@	All Igneous, Metamorphic	Small clusters
green jade	20×	@	Alluvial	Small clusters
heliodor	20×	@	Granite, Schist, Marble	Small clusters
peridot	20×	@	Gabbro	Small clusters
red zircon	20×	@	All Igneous, Metamorphic	Small clusters
red tourmaline	15×	@	Metamorphic, Sedimentary, Granite	Small clusters
red pyrope	20×	@	Metamorphic, Kimberlite	Small clusters
almandine	20×	@	Metamorphic, Diorite, Gabbro	Small clusters
red grossular	20×	@	Marble	Small clusters
pink tourmaline	15×	@	Metamorphic, Sedimentary, Granite	Small clusters
red beryl	20×	@	Granite, Schist, Marble	Small clusters
fire opal	15×	@	All stone	Small clusters
rhodolite	20×	@	Metamorphic, Kimberlite	Small clusters
purple spinel	20×	@	Metamorphic, Diorite, Gabbro	Small clusters
alexandrite	20×	@	Granite, Schist, Marble	Small clusters
tanzanite	20×	@	Gabbro	Small clusters
morganite	20×	@	Granite, Schist, Marble	Small clusters
violet spessartine	20×	@	Metamorphic, Granite	Small clusters
pink garnet	20×	@	Metamorphic, Granite	Small clusters
kunzite	20×	@	Granite	Small clusters
cinnamon grossular	20×	@	Marble	Small clusters
honey yellow beryl	20×	@	Granite, Schist, Marble	Small clusters
jelly opal	15×	@	All stone	Small clusters
brown zircon	20×	@	All Igneous, Metamorphic	Small clusters
yellow zircon	20×	@	All Igneous, Metamorphic	Small clusters
golden beryl	20×	@	Granite, Schist, Marble	Small clusters
yellow spessartine	20×	@	Metamorphic, Granite	Small clusters
topaz	20×	@	Granite	Small clusters
topazolite	20×	@	Marble	Small clusters
yellow grossular	20×	@	Marble	Small clusters
rubicelle	20×	@	Metamorphic, Diorite, Gabbro	Small clusters
clear garnet	20×	@	Metamorphic, Granite	Small clusters
goshenite	20×	@	Granite, Schist, Marble	Small clusters
cat's eye	20×	@	Granite, Schist, Marble	Small clusters
clear zircon	25×	@	All Igneous, Metamorphic	Small clusters
amethyst	20×	@	All stone	Small clusters
aquamarine	20×	@	Granite, Schist, Marble	Small clusters
red spinel	20×	@	Metamorphic, Diorite, Gabbro	Small clusters
chrysoberyl	20×	@	Granite, Schist, Marble	Small clusters
precious fire opal	20×	@	All stone	Small clusters
red flash opal	20×	@	All stone	Small clusters
black opal	30×	@	All stone	Small clusters
white opal	20×	@	All stone	Small clusters
crystal opal	20×	@	All stone	Small clusters
claro opal	20×	@	All stone	Small clusters
levin opal	20×	@	All stone	Small clusters
harlequin opal	20×	@	All stone	Small clusters
pinfire opal	20×	@	All stone	Small clusters
bandfire opal	20×	@	All stone	Small clusters
light yellow diamond	30×	@	Kimberlite	Small clusters

Precious

Gem name	Value	Color	Found where	Found how
faint yellow diamond	40×	@	Kimberlite	Small clusters
emerald	40×	@	Granite, Schist, Marble	Small clusters
ruby	40×	@	Bauxite	Small clusters
sapphire	40×	@	Bauxite	Small clusters

Rare

Gem name	Value	Color	Found where	Found how
clear diamond	60×	@	Faint yellow diamonds	Single gem
red diamond	60×	@	Faint yellow diamonds	Single gem
green diamond	60×	@	Faint yellow diamonds	Single gem
blue diamond	60×	@	Faint yellow diamonds	Single gem
yellow diamond	60×	@	Faint yellow diamonds	Single gem
black diamond	60×	@	Faint yellow diamonds	Single gem
star sapphire	60×	@	Sapphire	Single gem
star ruby	60×	@	Ruby	Single gem

Diamonds are the only gems defined as vulnerable to heat. They ignite at 800°C (1440°F) and boil off at 3700°C (6700°F).

Rare Gems

Colored diamonds only occur in clusters of faint yellow diamonds, and star sapphires and rubies only occur within clusters of their peers. Faint yellow diamonds only appear in Kimberlite (which itself only appears in Gabbro layers) and sapphires and rubies only appear in Bauxite (which occurs in any Sedimentary layers).

Glass

Gem name	Value	Color	Requires
green glass	2×	■	bag full of sand
clear glass	5×	■	bag full of sand + pearlash
crystal glass	10×	■	rough rock crystal + pearlash

Like working metal, making glass requires fuel, either coke or charcoal at a normal glass furnace, or magma at a magma glass furnace.

Glass has other uses than as a mere gem, as glass can be used as (a rather odd looking) stone for most buildings, such as Tables or Doors. In addition, Glass can be converted into Trap components, such as large, spiked balls or giant axes. Glass trap components have the same weapon damage as wood or silver (50%).

Glass windows can be made at a glass furnace as an alternative to making windows from gems.

Outside of Metal and Wood, Glass is the only readily available material to create Cages out of, as well.