Refractor card

[2][1] Later releases have confirmation of a Refractor on the back of the card in the form of either an R or the word 'Refractor' printed, usually, beside or beneath the card number, but the first Refractors did not include this designation and are therefore sometimes more difficult to differentiate from base issues.

[3] Variants that typically appear in Topps Finest, Topps Chrome, and Bowman Chrome releases often include Gold, Blue, Red, Orange, Green, and Black.

Less often, Refractor color variants including Pink, Purple, and White can be found.

Usually, the Orange and Red Refractor parallels are extremely rare and have low serial numbers, while the Blue and Green ones are more common.

In addition to regular refractors and color swap refractors, Topps Chrome and Bowman Chrome (and on occasion Topps Finest) sometimes include a parallel called an Xfractor or X-fractor.

They typically have a checkerboard background design in addition to the regular Refractor finish and sometimes have serial numbers.