Thread ?
gauge is not important
1.65 mm
90 yards (82 m)
5.5 inch doily
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This is one of thirteen small doilies which are in the PDF booklet titled “Dainty Little Doilies” by Elizabeth Ann White.

This doily has an Irish crochet rose in the center, and then shells all around the rose and expanding outward to the edge of the doily.

The pattern calls for:
Size 10 crochet cotton in Rose, Green, and Yellow. (30 yds each color)
Size 7 (1.65 mm) steel crochet hook
Heavy Spray Starch