|Whilst flawless aquamarines are readily available (but expensive), a flawless emerald is rare.
Inclusions in aquamarine are commonly slender parallel tubes known as rain. See this in our large aquamarine pendant Marsha.
Inclusions in emerald are valuable in distinguishing the genuine thing from the synthetic. Often, inclusions in emerald are indicators of the origin of the gem and help to identify its source. For example "three-phase" inclusions are typical of Columbian emeralds.
The most abundant source of aqauamarine is Brazil and the finest emeralds are to be found around Muzo and Chivor in Columbia. However, there are good emeralds to be found in Sandawana in Zimbabwe, Kitwe in Zambia and Swat in Pakistan.