Answer:
One more than a duet.
I am a king but also a common device of measure. What am I?
Precious stones in a pack of cards.
What fastens two people yet touches only one?
In a vase, garden, pot or field, these are the homes of this Valentineโs day symbol that comes in many different colors such as red, pink, white, yellow and orange.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.