Latinum
Latinum was a rare silver-colored liquid metal that was used as currency by the Ferengi Alliance, the Cardassians, and many other worlds. For ease of transaction, latinum was usually suspended within bits of gold as a binding medium to produce gold-pressed latinum. () Smuggling latinum was considered a crime by the Enolians. ()

Latinum was deeply ingrained in Ferengi culture, and was referenced in several of their Rules of Acquisition, with some dating back to a time prior to the mid-22nd century. ()
 57th Rule of Acquisition: "Good customers are as rare as latinum. Treasure them." ()
 75th Rule of Acquisition: "Home is where the heart is but the stars are made of latinum." ()
 102nd Rule of Acquisition: "Nature decays, but latinum lasts forever." ()
 229th Rule of Acquisition: "Latinum lasts longer than lust." ()
 263rd Rule of Acquisition: "Never allow doubt to tarnish your lust for latinum." ()

During the mid-23rd century, bounty hunters, even from Federation species like the Tellarites, might expect Starfleet ships to pay bounties in latinum, including by depositing it in their accounts. ()

In 2370, Odo recorded in his security log that of the seriously injured Quark, "The Ferengi holds onto life like it's gold-pressed latinum." ()

Later that year, Quark warned Martus Mazur, who had just "stole" Rom as an employee, that he should be careful because Rom "shaves the latinum." Rom denied the accusation, before admitting, "Not much." Later, using profits from his club, Martus Mazur provided con artist Alsia with just about 10,000 isiks worth of latinum. ()

Latinum apparently did not hold a similar monetary value in the mirror universe, as the  of that universe had never heard of it. ()

In Grand Nagus Zek's Prophet-influenced publication, "The Rules of Acquisition: Revised for the Modern Ferengi", created in 2371, it was stated in Rule #24 that "Latinum tarnishes, but family is forever." ()

According to Quark, in 2374, syrup of squill "is worth its weight in latinum." ()

Later that year, upon discovering that Morn held an extracted quantity of liquid latinum in his second stomach, Quark concluded that that was why his hair fell out. ()

According to Jean-Luc Picard, in 2375, the regenerative properties of metaphasic radiation found on  would be, to most offlanders, "more valuable than ...gold-pressed latinum." ()

The biomatter of the Abronians contained high concentrations of latinum, which led to their being targeted by grave robbers. ()

Value 

Denominations of gold-pressed latinum, in order of increasing value, included the slip, the strip, the , and the . () A  was also a predetermined unit of latinum. ()

The approximate conversion was:
 100 slips = 1 strip ()
 20 strips = 1 bar ()
 1 big "bar" = 100,000 Federation credits ()

In addition, other units of quantity were used to value latinum.

 Kilograms: Tahna Los gave Lursa and B'Etor thirteen kilograms of latinum in exchange for a canister of bilitrium. ()

 A case: All the latinum in Quark's possession at the time of an evacuation of Deep Space 9 could fit in one case. ()

Comparative values 
The following provides comparison on the value of latinum for specific items. Further details of each item may be seen above.

Clothing
 Cadet's uniform – five strips
 Dress from Garak's Clothiers – seventeen to twenty strips

Holosuite programs
 A Visit with the Pleasure Goddess of Rixx – ten strips
 Custom holosuite program – one bar

Wages
 Quark's personnel during the Cardassian Occupation – one slip per day
 Quark's dabo girls on DS9 – fourteen strips per pay 
 Morica Bilby – five to thirty bars a week

Profits
 Quark – five bars a day 
 Janel Tigan – more than a thousand bars a day

Life savings
 Nog – five bars 
 Rom – seventeen bars, three strips, and five slips, as of 2373; also the amount he bid for Quark's remains. ()
 Quark – one hundred bricks and six hundred bars

Latinum items 
 Bucket : Quark suggested that Odo could have had a latinum-plated bucket in which to regenerate. ()
 Divine Treasury : Quark stated that the Divine Treasury was made of pure latinum. ()
 Earring : Maihar'du gave Kira Nerys a latinum Bajoran earring as a gift from Grand Nagus Zek. ()
 Hair brooch : Lwaxana Troi's latinum hair brooch was stolen while she was on Deep Space 9 in 2369. ()
 Inscription pens: Quark was selling renewal scroll inscription pens during the Bajoran Gratitude Festival. The pens were latinum-plated. ()
 Tooth sharpener: Quark had to use wooden chewsticks while Rom used a latinum tooth sharpener when they were children. ()
 Waste extraction fixtures: According to Nog, the waste extraction fixtures in the Nagal Residence were plated with latinum. Quark suggested that, if made Grand Nagus, he would (rather indulgently) have replaced them with solid latinum fixtures. ()

See also 
 Latinum dance
 Latinum stairway

Appendices

Background information 
Gold-pressed latinum was first introduced in "Past Prologue" by Peter Allan Fields. ()

In "Past Prologue", the value of latinum was defined by its weight, then "bars" were the unit of choice throughout DS9 Season 1. "Strips" were first referenced in "The Homecoming", and slowly came into popular use during the latter half of DS9 Season 2. "Slips" were first referenced in DS9 Season 3 in "Family Business", and the same year, "bricks" were first referenced in the VOY Season 1 episode "Learning Curve".

Also in "Past Prologue", both B'Etor and Odo once referred to it simply as "gold", while in "Q-Less", Vash referred to it once as "gold latinum", while Quark (in his excitement) referred to it as "gold-press latinum". 

Some viewers have suggested that latinum could not be replicated, given that if it could be replicated it would be worthless. (The Making of Star Trek: Deep Space Nine)

Apocrypha 
Star Trek: Armada II depicts the natural form of latinum occurring in sparse nebulae in a form that can be harvested. The Federation used it for trade, while the Klingon Empire, Romulan Star Empire, and Cardassian Union also use latinum for research. The Borg do not use it, and Species 8472 converts it into biomatter.

External link 
 

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Materials
Currency
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