Kytherium stands as one of the most distinctive materials in the known world, immediately recognizable by its brilliant, vibrant blue coloration that resembles an enhanced version of the legendary "blue gold" but with far greater luminosity and depth. This extraordinary metal possesses a density thirty percent greater than traditional gold, giving it substantial weight that lends credibility to its use as currency while creating a distinctly cold sensation when touched. Unlike common metals that succumb to the ravages of time, Kytherium as a material has remarkable durability, resisting scratches from ordinary tools and maintaining its pristine appearance without tarnishing, rusting, or fading regardless of age or environmental exposure. Perhaps most remarkably, the material's color composition can be deliberately altered during the forging process through careful alloying with other metals, allowing skilled craftsmen to create variations in hue and appearance while maintaining the material's essential properties. This color-shifting capability has made Kytherium not only valuable as currency but also highly sought after for decorative and ceremonial purposes.

The origins of Kytherium trace back to the very creation of the world itself, formed through the divine power of the Twin Goddess Dragons who breathed life into existence. This sacred material manifests through a dual process of natural geological formation combined with its primordial connection to the world's creation, resulting in deposits that can be discovered in cave systems, mountain veins, and surface rock formations throughout regions with significant volcanic activity. The material's abundance varies considerably based on geographical location, with areas of active or ancient volcanic activity providing near-limitless supplies, while regions lacking such geological features must rely on trade networks to obtain adequate quantities. This distribution pattern creates a natural economic geography where volcanic regions often develop into wealthy mining centers, their prosperity built upon the steady extraction of this precious blue metal. The accessibility of Kytherium deposits ranges from easily accessible surface formations to deep underground veins requiring extensive mining operations, making the material as common or rare as gold depending on local geological conditions and the willingness of miners to venture into challenging terrain.

The magical properties of Kytherium set it apart from all other known materials, beginning with its complete immunity to alchemical transmutation—a characteristic that makes counterfeiting virtually impossible and establishes its reliability as a monetary standard. The material demonstrates perfect resistance to heat from conventional sources, remaining completely unaffected by even the most intense mundane flames, yet paradoxically yields only to the supernatural heat of dragon fire during forging processes. This selective thermal behavior extends to its poor conductivity of electricity and its resistance to certain forms of magical manipulation, creating a material that maintains its integrity across a wide range of supernatural influences. Remarkably, Kytherium shows no special reaction to the presence of actual dragons, treating their proximity with the same indifference it shows to other magical phenomena. The material's magical nature requires specialized expertise to work with effectively—general magic-users cannot distinguish between pure Kytherium and its various alloys, necessitating consultation with trained appraisers who possess the specific knowledge and tools required for accurate assessment. When enchantments are desired, they must be incorporated during the dragon-fire forging process by specialists who understand both the material's properties and the complex magical techniques required to imbue it with additional powers, making enchanted Kytherium items exceptionally rare and valuable.

Kytherium is commonly used as the world's currency called Kytharn and Kytheli due to it's hard forgery strengths of requiring dragon fire that prevents counterfeiting, Kytherium has other uses such as armory, weaponry and accessories due to their magical properties.

The economic framework surrounding Kytherium operates through a sophisticated network of specialized guilds and governing authorities, each playing crucial roles in the material's journey from raw ore to official currency. Mining operations remain largely unrestricted, allowing independent prospectors and organized expeditions alike to extract Kytherium from discovered deposits, though the Mining Guilds have established themselves as the primary experts in both extraction techniques and material appraisal across all types of ores and metals. The exclusive ability to forge Kytherium belongs to the Thuwedari, a race of people who possess the capacity to use dragon fire, who have organized themselves into Blacksmith Guilds that handle all dragon-fire forging requirements for both official currency and private commissions. The Grand Archmage Council maintains ultimate authority over currency minting, ensuring the legitimacy and standardization of Kytharn coins while allowing the various guilds to operate according to standard market rates without special fees or restrictive agreements. The value system for Kytherium operates on a purity-based scale determined through precise weight measurements—pure Kytherium commands the highest prices, while alloyed materials see their value decrease proportionally to their impurity levels, with compositions such as thirty percent nickel and ten percent iron fetching roughly half the value of pure samples. This economic structure supports a thriving marketplace where private individuals can commission Thuwedari smiths to create everything from ceremonial armor and weapons to decorative accessories and specialized attire, all while maintaining the integrity of the official currency system through the careful oversight of the established guilds and governing councils.