There are infinitely many possible answers that depend on the relative shapes and sizes of the diamonds.
a cube
no
There is 1 Three of Diamonds in a standards 52 card deck of cards.
Three rhombi can make a long parallelogram.
There are infinitely many possible answers that depend on the relative shapes and sizes of the diamonds.
a cube
It only takes to diamonds to form a hexagon, but three if it is a regular hexagon.
no
Spades, clubs or hearts can be used with diamonds to make a pair, three of a kind, straight, or full house in poker.
Diamonds can be cut into almost any shape.
Do you mean diamonds as in diamond rings, or as in a pack of cards? If the crystal version, then you can't do anything with them other than by grinding bits off to change the shape.
Octahedron
no
Three carat diamonds weigh three carats: that's how 'big' they are.
The Three Diamonds - 1929 was released on: USA: 11 November 1929
As found in their natural state, any