Star-stone

From elanthipedia
Jump to: navigation, search
Star-stone at a Glance
Material Type Gems
Colors Red, Blue, Pink, Yellow, Green, Purple, White
Rarity Common
Cultural Relevance None
Required for Alterations No

A characteristic in some gemstones is called asterism. An asterism is a "star-shaped" concentration of reflected or refracted light from a gemstone. This characteristic can appear when suitable stones are cut en cabochon (ie: shaped and polished, not faceted.) Gemstones that exhibit this effect are referred to as asteria or star-stone.

The star-effect (asterism) is caused by a difference in refractive properties between the host material and that of the dense inclusions of rutile or "silk" (read: titanium dioxide). The stars are caused by light reflecting from needle-like inclusions of rutile aligned perpendicularly to the rays of the star -- though it may also be caused by inclusions of hematite such as in black star sapphire. Some star sapphires contain both hematite and rutile, resulting in a 12-ray star to appear.


There are two types of asterism:

  • Epiasterism - seen in sapphire and most other gems. This is the result of a reflection of light on parallel arranged inclusions inside the gemstone.
  • Diasterism - seen in rose quartz. This is the result of light transmitted through the stone. In order to see the asterism effect at all, the stone must be illuminated from behind. (Rose quartz also exhibits epiasterism.)


Some Asteria (star-stone) Gems
Unique star stones

Alteration Rules

This material is not required for alterations.




Raw Material Sources

Items

ItemSource isRarity is
Breaking and Entering/Rooms and Loot/Material options
Chubby clay piggy bank with gemstone eyesBreaking and Entering/Bedroom loot
Competition miniature coral Andreshlew studded with tiny tentsHollow Eve Festival 439/Game prizesHollow Eve Festival 443/Game prizesincidental
Competition miniature squad of sea turtles wielding conch shellsHollow Eve Festival 439/Game prizesHollow Eve Festival 443/Game prizesincidental
Competition miniature windsteel moon mage grasping a star-stone moonbladeCompetition siegery repair case composed of windsteel and wyndwood panels
Diaphanous silk dance veil adorned with blossomsHollow Eve Festival 436/Game prizesHollow Eve Festival 439/Game prizes
Dramatic cloak fastened with a claspHollow Eve Festival 436/Game prizesHollow Eve Festival 439/Game prizes
Elaborately dressed puppet with eyesHollow Eve Festival 436/Game prizesHollow Eve Festival 439/Game prizes
Etched briquet marked with a simple blossomBreaking and Entering/Armory loot
Exquisite haircomb twined in blossomsBreaking and Entering/Bedroom loot
... further results

Related Forum Posts

None yet.