Terminology: all crochet terms used are U.S.
You require two colors of yarn, color 1 (C1) for the background and color 2 (C2)

Technique: Overlay Mosaic crochet in the round (from the center out) or row by row with diagonals.

Yarn: for example, Scheepjes Stone Washed
Gauge: 10 stitches in 5cm (2”) by 5 rows in 5cm (2”) in dc stitch pattern.
Hook 3.25 – 3.5 mm.
Yardage for one tile:
Non-solid version approx. 170 m of C1 yarn, 180 m of C2 yarn. (186 yds and 197 yds)
Solid version approx. 185 m of C1 yarn, 180 m of C2 yarn. (203 yds and 197 yds)
Size approx. 35 x 35 cm (71x71 stitches, 13¾ x 13¾ inches).

Yarn: for example, Scheepjes Whirl, Whirlette
Gauge: 13 stitches in 5cm (2”) by 6½ rows in 5cm (2”) in dc stitch pattern.
Hook 2.5 mm.
Yardage for one tile:
Non-solid version approx. 115 m of C1 yarn, 120 m of C2 yarn. (126 yds and 132 yds)
Solid version approx. 122 m of C1 yarn, 120 m of C2 yarn. (134 yds and 132 yds)
Size: approx. 27 x 27 cm (71x71 stitches, 10¾ x 10¾ inches).
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Technique: Interlocking filet crochet in the round from the center out) or row by row with diagonals.

Yarn: Scheepjes Catona, the main background color C1 – 393 Charcoal and contrast pattern color C2 – 402 Silver Green.
Hook 3 mm.
Size 31.7 x 31.7 cm (12½ ″ square), 35x35 filet windows
For one Tile (solid version, Interlocking filet crochet in the round), you need a total of 116 g of yarn. Approx. 55g (138 m / 151 yds) for color С1 (Charcoal) and 61g (153 m / 167.3 yds) for color С2 (Silver Green)
It is better to have extra yarn yardage to account for tension.