Lovely antique Victorian floral roses mosaic pin set in goldstone. The simple frame appears to be rolled gold. The flowers are shades of red, pink, and white with green leaves. The pin back is a replacement and you can see the seams on the frame where it was joined. The rest is in excellent condition, with no chips or missing tesserae (tiles).
It measures (just shy of) 2 x 1.5 inches or 5 x 3.8 cm.