The Orchid Studs are available in sterling silver, an 18k yellow gold vermeil, or solid 9k gold and set with:

~ 6mm round natural pink kunzite
~ 8x6mm pear cut natural blue zircon

Note that this piece is purposely mis-matched with one pink kunzite and one blue zircon. 

Complete the set with the Orchid Necklace and Orchid Ring.