The Kogish Trees and Flamesilk
Native to the Joreta region, a Kogish tree is a special breed of trees that grows in clusters and erupts in flames whenever the sun reaches its daily zenith, all the way until sunset. Such flames do not char the Kogish trees themselves but rather consume all the plant lives that grow around the Kogish trees. It appears that this is the method that Kogish trees use to propagate themselves as new Kogish trees often take the places occupied previously by other plants within the perimeter of fires erupting off Kogish trees. The flames erupting from Kogish trees cannot be quenched by normal water. Only water from the local Jtatk River will do the trick.

In appearance, a Kogish tree resembles a mahogany tree. However, its bark is bright red, the colour of flames. From afar, a cluster of Kogish trees might look like a bushfire currently ravaging a forest even when the trees are not themselves burning.

A Kogish tree produces a sap that is amber red in colour. This sap oozes out from the sides of a tree trunk, along low-hanging brunches and often collects into a form much akin to a single silk strand that hangs off the end of such brunches. Locals collect such strands and weave them into a material known as Flamesilk around the world.

~ Excerpt from the Encyclopedia of Plants, Animals and Social Customs
History

At first, humans who reside in this region, known as the Yklars, had no use for the Kogish trees. In fact, the original society of Yklars* is one formed from nomadic tribes, who roam the Joreta steppes in continuous flight from the encroachment of the Kogish trees. This changed when they come upon the Jtatk river and found that the the self-combusting flames from the Kogish trees can be put out by water from this river. As a result of this discovery, the tribes settled down along the banks of the Jtatk River and more or less co-existed with the Kogish tree clusters, though they still have to devote substantial resources to control the expansion of these trees.

*These Yklars had no knowledge of crafts and so could not cut down the Kogish trees. They also had little weaving skills and certainly had never come in contact with any kind of fabric material, much less silk.

Then a refugee family fleeing the Dragon Empire came to the Joreta steppes and lived quite close to one of the many Yklar tribes, the Uratus. At first this family lived much in separation with the Uratus even though they did not fear their neighbours too much. It was this family that first made use of the Kogish trees in the form of *firewood and the womenfolk in the family wove the sap strands into the original version of Flamesilk, from which the familys summer clothes are made out of.

*Kogish trees as firewood doesn’t self combust and behaves much like normal firewood

One day, the youngest children, a pair of fraternal twins of different gender, from this family were playing in the kitchen and the boy was too close to the stove and his sleeve went in except it didn’t catch on fire. That’s how the fire resistant properties of the Flamesilk was first discovered. This led to a second use for Flamesilk- the creation of fire dampening cloths that the family kept around the kitchen. 

As time goes by, this family started to interact more with their neighbours and got adopted into the Uratu tribe. In this way, knowledge of weaving and crafting tools spread to the Yklars as the Uratu men and women learnt from this family. This started the production of Flamesilk en masse as the nomads started to wear silken gowns in summer in replacement of animal skins, their traditional garment*. This is because the Joreta weather is generally quite warm in all seasons. In this way, the Kogish tress became as much a necessity in the Yklar society as they were once a menace.

*In winter, the Yklars now wear clothes woven from hemp, another innovation brought in by the refugee family from the Dragon Empire.

And yet, there is a further twist to the story. Later, a particular curious-minded Yklar child, by the name of Taruksha, found that if he gently rubbing Flamesilk against each other, he could produce a tiny flame. This flame is in fact quite a pretty sight as it seems to be floating on top of the fabric. Very rapidly, this became a favourite toy of Yklar children, while Yklar adults remained ignorant of this fact (as the children tended to play with flamesilk only when there were no adults around). It wasnt until that an entire hut got burned down as a result of a particular child playing with scraps of Flamesilk in his mothers sewning basket and rubbing them together too hard that this became generally known. Luckily, no casualties resulted from that accident. Nevertheless, the Yklar tribes came together to discuss the implications of this discovery.  At the end of the meeting, two new ideas concerning the use of Flamesilk were brought up: one on the weaving of an improved version of the fabric by interspersing each strand of Flamesilk with a hemp strand for use in clothing and the other concerning its use as a torch to light the way at night. 

Special Properties
Flamesilk smothers fire, came about due to constant washing in the Jtatk river, whose water is the only form of water able to rouse the fire of the Kogish trees. As a result, the fabric has taken on the property of these waters. For the original version of Flamesilk, however, a flame is also created if flamesilk come into contact with each other. The actual size and strength of the flame created this way depends on the force of contact i.e. a light brush versus intentional rubbing of Flamesilk with vigour. When this property is discovered, however, it led to the creation of a improved version that does not have this dangerous effect.

The Yklars built fences made up of a single bolt of this form of improved Flamesilk around their towns to protect them from the effects of bushfires caused by the presence of the Kogish trees. In addition, all the original Flamesilk cloths that every family kept around in case of fires were replaced with cloths made of the improved Flamesilk. The original version of Flamesilk, however, is still in use as adults utilise what become to be known as a Taruksha flame in the lighting of pathways when travelling at night.

Note: The post is inspired by a section in a Chinese novel written in the Qing era (the one associated with the reign of the Manchurians) titled Flowers in the Mirror, telling briefly of a type of tree that combusts on contact and which bark was weaved into bolts of cloths resembling cotton.

Full Item Description
Icesilk is a material similar in texture to normal silk, but woven from strands of ice.  It is produced in the region of the Svetla Glacier, by the Ice Maidens. Icesilk is pure white, like the ice that they are woven out of.

There are 2 varieties that they come in: those that never melt (the most common variety) and those that melt on contact with human flesh.

History
Originally produced for the clothing needs of the Ice Maidens, Icesilk became a main exporting commodity to the Dragon Empire in the Lu Dynasty. This occurred when they were chanced upon by the sole surviving member of a team of diplomatic envoys sent out to negotiate a military pact with the Persians, who all died in an avanlache except for one.

At first, there was only 1 variety of Icesilk, the type that never melts that the Ice Maidens produce for exporting. Noble ladies and wives of rich merchants often ordered gowns made of this type of Icesilk to wear in summer. Thus, in the Dragon Empires, Icesilk is considered a luxury item.

Over time, however, one of the top families in the assassination trade saw an alternative use for Icesilk that, instead of never melting, would actually melt when it first comes into contact with human flesh. This family commissioned a Tuner Mage to alter the properties of Icesilk in accordance with its particular vision and a new variety of Icesilk came into being, which was used to fashion what later became the signature weapon of this family, the Ice Needles. This variety can only be found on the black market but like its counterpart that is sold legally, it too commends a high price.

Special Properties
Although Icesilk does not confer any magical properties to users, it is nevertheless an enchanted product. It is purely through the magical powers of the Ice Maidens that such a clothing material can be woven out of ice.

A gown woven from Icesilk will keep the wearer cool at all times. On the black market, there are also transactions on the sale of Icesilk that melts on contact with human flesh, which are used to make Ice Needles for assassination purposes (see 30 Unconventional Weapons)

Full Item Description
Kristoff’s Kerchiefs are small, colorful kerchiefs, crafted from a mildly magical fabric that combines the better qualities of wool and cotton. Often embroidered at the edges with fanciful patterns, or monogrammed for the owner, the basic form is merely that of a relatively tough and pleasant-feeling kerchief.
The slightly magical nature of the cloth, owing to how it is made, makes the kerchiefs ideal for enchanting with minor effects, however; as such, the majority of the kerchiefs which may be found have some form of extra effect appended to them.
History
Kristoff Fairhaven was a journeyman magician who suffered greatly from allergies and sensitive skin, enduring redness, swelling, and a sore face every time his allergies flared up, as the common fabric of his kerchief abraded painfully after a few days of use.
It was after one particularly lengthy bout of hayfever that he concluded that if magic could not cure his ailment, he could at least find a way to use it to lessen his suffering, and so began to search for a way to magically blend fabrics together, hoping to achieve something pleasantly soft and smooth, yet durable. It took nearly a full year, and many failed efforts (as well as one which yielded a fabric as strong as silk and as coarse as crude-spun hemp), but in the end he created exactly what he sought: a fabric that was both strong and durable, yet forgiving to sensitive skin. He immediately sought out a reputable tailor and struck a bargain; in exchange for the first product and a continuing cut of the profits, the mage would provide the fabric for the tailor to craft kerchiefs from, as each bolt held barely enough cloth to make a single set of modest clothing, and would demand an exorbitant price, but many kerchiefs could be crafted and sold more modestly.
It wasn’t until nearly a month later that the mage, when working a cantrip to clean his new kerchief, discovered the ease with which the fabric could be enchanted; his cantrip readily cleaned the cloth, to the point of rendering the colorful square a gleaming white. Soon enough, the tailor began to sell kerchiefs with additional properties, and both her and Kristoff reaped the profits.
Since then, the secret of Kristoff’s fabric has been spread, and many of these handy little cloth squares can be found throughout society, most enchanted with a useful trait or two.
Magic/Cursed Properties
In the simple form, the Kerchief is merely a durable yet pleasantly soft square of fabric, capable of serving effective in the role of any normal kerchief, although lasting longer and causing much less irritation to those who suffered sinus troubles.
The fabric readily accepts minor magics worked upon it, strengthening their effect several times over; a cleaning cantrip, applied carelessly, can strip away not only all the materials befouling the fabric, but even the very dye that gives it color, while a cantrip to call it from across a room often leaves the caster desperately trying to pull the material from his face as it clings with a glue-like stubbornness. More powerful magics, however, simply overload the cloth’s innate power, often destroying it in a burst of magical smoke.

Sample Kerchiefs
Below are sample enchantments permanently worked into Kerchiefs, most of which are merely the more common cantrips applied the the material.
The Gleaming Kerchief - Enchanted to be perpetually clean no matter how noisome the substance applied to it, the kerchief waits for a few seconds - long enough for the owner to move the fabric away from themselves - before magically repelling anything on it. Even thick, sticky sludge such as tar or molasses simply spills off. These Kerchiefs are named for the gleaming white hue of their material, as the dyes are considered a ‘befoulment’ by the augmented cantrip.
Ever-Ready Kerchief - A simple gesture, set at the time the Kerchief is given to the owner, will cause the Kerchief to leap from wherever it lies into the owner’s hand, as long as the owner is relatively close - no more than a room distant - and there are no intervening barriers.
Fragrant Kerchief - Popular among nobility who do not wish to contend with the aromas of the lower class when out from their homes, these Kerchiefs perpetually exude a mild fragrance that masks other odors around them. The Perfumed Veil is thought to be the inspiration of this enchantment, as few of noble blood would care to wear a garment used by those who work in the filth of the sewers.
Chameleon Kerchief - Favored by those who are often found in a different outfit every day, the color and pattern of this fabric can be altered by the owner, if they hold the Kerchief and concentrate on the desired appearance for a few seconds.
Warrior’s Kerchief - This vividly colored Kerchief is enchanted to stick to the skin if placed so that it fully cover a wound, allowing air to pass in but preventing blood from spilling out, the better to encourage a wound’s healing or to prevent the owner from dying from loss of blood until a healer can attend them. Rumors of vampiric Kerchiefs are almost certainly untrue.

Full Item Description
Moonsilk is woven from strands that form the cocoon of a type of special larvae found in the region of Hitermann. As a result of ingesting the particular breed of mulberry leaves in the region, this specimen of larvae spits out strands that are a lot finer than usual.

Any gown woven from Moonsilk will be so translucent that it will reflect the moonlight, hence the name "Moonsilk".

Special Properties
Gowns woven from Moonsilk are particularly alluring as such half-transparent gowns sets off a woman's figure in subtle ways that spark the imagination. Many men find it both a pleasure and a torment when they lay eyes on female bodies wrapped in Moonsilk.

In addition, breezes rustling over such gowns would create a musical sound much like that of wind chimes. Moreover, the pitch of the notes given off such garments changes with different types of movements and the strength and direction of wind. It is rumoured that this is the result of a special technique of weaving that no one outside of Hitermann knows. Hiter musical troupes often wear gowns made of Moonsilk to utilise the unique sounds given off the garments. Such troupes do not perform according to set pieces since the notes given off by the gowns on any given day are totally unpredictable but rather all performances are based on moment improvisations. The best of such troupes perform around the World and are generally the most high paying performance troupes simply because they are such a rarity.

Common Uses
In addition to fulfilling the locals’ clothing needs, Moonsilk is also commonly used for the following purposes within the Hiter Society:

The Moon Drum

This is a ceremonial instrument only played on the night of the Summer Solstice, a day dedicated to the Deity of Music (Shani) culminating in a festival involving songs and dances. The Moon Drum is a large drum with a diameter roughly corresponding to half the height of an average Hiter. Each year, a new drum skin for the Moon Drum is made from weaving together the various squares of Moonsilk that Hiters routinely give as offerings to the local Temple of Shani.

The Resonating Knot

A symbol of the harmony between two souls (of different genders), the Resonating Knot is a decorative knot made with strands of Moonsilk from the same bolt of cloth that the two lovers weave collectively. It is composed of two symmetric detachable parts dyed blue and red to represent the two different genders respectively. As its name indicates, these two distinct parts create a resonance when held in the proximity of each other. In Hiter society, the crafting of a Resonating Knot between two individuals signifies commitment to each other, which is openly displayed by the two wearing the part of the knot that is a representation of him/herself (referred to as the Self portion of the Knot) as a clothing accessory. At the same time, this commitment can be revoked when one party unties the Self portion. After marriage, the two parts are joined together and worn openly by the husband. Upon the death of either party, depending on whether the remaining spouse intends to remarry or not, he/she will either bury his/her Self portion with the deceased (as a sign of affection for the deceased but signifying the commitment is no longer binding) or the entire Resonating Knot.