The two most common approaches are intarsia and stranded colorwork. Mosaics have a distinctly different appearance than intarsia or marquetry. Intarsia is a form of wood inlaying that is similar to marquetry. Knitwear is hand-framed and intricate intarsia designs can be created. Other techniques for knitting in colour include intarsia, slip-stitch colour (also known as mosaic knitting). The pattern can be created using various methods such as mosaic, intarsia, and marquetry. However, it is possible to knit intarsia in circular knitting using particular techniques. There are several techniques to execute intarsia when circular knitting. As a knitting pattern, argyle is generally accomplished using the "intarsia" technique. After about 1620, marquetry tended to supplant intarsia in urbane cabinet work. The simplest intarsia pattern is for straight vertical stripes. The high altar is in polychrome marble with hardstone intarsia and bronze panels. Today intarsia can be made from purchased patterns. With intarsia pieces are cut to fit together like a puzzle. In a later stage black, white, green, red and blue marble intarsia were used.