Japanese Glass Button Cabochons No Shank Glass Cabochons Flat Back Blue Green Opal Glass 20mm (2 Pcs) J148

Glass Cabochons, button cabs no shank. These were made in Japan for buttons but are unfinished. Nice cabochons for jewelry making. Measures 20mm round with a swirl pattern. Blue opal glass with hints of green. I will best match pair these for size and color. Qty of 1 = 2 cabs J148