Size: 6.5mm x 2.5mm long 2mm princess cut gemstone available as listed Available in Solid 14k Yellow, Rose and White Gold Stainless steel pin compatible with 16g and 18g post/backing. 18k solid threads available for 18g, 16g and 14g threaded posts/backings upon request. Sold as single Post/backing not included (We do not make the posts/backings) Locally made in Downtown Los Angeles.