The three red roses would go on the middle of the kitchen table in the vase that he liked so much, the one they'd bought at the Kosta Boda glassworks one summer.

Kosta Glasbruk (later known as Kosta Boda) is a Swedish glassworks founded by two foreign officers in Charles XII's army.  The surrounding region has become known as the "the Kingdom of Crystal" and is now a tourist site which attracts a million visitors annually. (Wikipedia)