Star-stone

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

• star chrysoberyl
• star cymophane
• star citrine
• star emerald
• star garnet
• star moonstone
• star rose quartz
• star ruby
• star sapphire
• star spinel

Unique star stones

• Siato star emerald

Alteration Rules

This material is not required for alterations.

Raw Material Sources

Corik's Secret: Treasures of the Tomb/End loot, Cut silver gem case set with polished cabochon stones, Platinum filigree jewelry box with glaes fittings and Polished goldbark gem case set with marquis topaz of myriad sizes

Items

Item	Source is	Rarity is
BEGems
Breaking and Entering/Rooms and Loot/Material options
Chubby clay piggy bank with gemstone eyes	Breaking and Entering/Bedroom loot
Competition miniature coral Andreshlew studded with tiny tents	Hollow Eve Festival 443/Game prizes, Hollow Eve Festival 439/Game prizes, Hollow Eve Festival 450/Game prizes, Hollow Eve Festival 447/Game prizes	incidental
Competition miniature squad of sea turtles wielding conch shells	Hollow Eve Festival 443/Game prizes, Hollow Eve Festival 439/Game prizes, Hollow Eve Festival 450/Game prizes, Hollow Eve Festival 447/Game prizes	incidental
Competition miniature windsteel moon mage grasping a star-stone moonblade	Item:Competition siegery repair case composed of windsteel and wyndwood panels
Diaphanous silk dance veil adorned with blossoms	Hollow Eve Festival 443/Game prizes, Hollow Eve Festival 439/Game prizes, Hollow Eve Festival 436/Game prizes, Hollow Eve Festival 450/Game prizes, Hollow Eve Festival 447/Game prizes
Dramatic cloak fastened with a clasp	Hollow Eve Festival 439/Game prizes, Hollow Eve Festival 436/Game prizes, Hollow Eve Festival 450/Game prizes, Hollow Eve Festival 447/Game prizes	incidental
Elaborately dressed puppet with eyes	Hollow Eve Festival 443/Game prizes, Hollow Eve Festival 439/Game prizes, Hollow Eve Festival 436/Game prizes, Hollow Eve Festival 450/Game prizes, Hollow Eve Festival 447/Game prizes
Etched briquet marked with a simple blossom	Breaking and Entering/Armory loot
... further results

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