Aquamarine of spell extending

An aquamarine of spell extending was an enchanted aquamarine gem mounted within an hourglass made of gold and silver.
==Powers==
Once per day, the wielder of the aquamarine could extend the duration of any of the spells they cast, of 6 level or lower. Those who did not prepare their spells the day before they were cast had to take extra time casting for this to take effect. 
==Appendix==
===References===
Category:Gems
Category:Magic items
Category:Wondrous items
Category:Items from Toril
Category:3000-3999 gold pieces