Heidi Daus Blue Crystal Pink & Brass Costume Jewelry Ring 7 cm Circumference Size 7 Signed Excellent condition with no flaws to note. No missing crystals. Minimal signs of wear to the metal. Signed on the inside. Ring size 7. How to measure your ring size: Using paper or string Wrap a piece of paper or string around the base of your finger. Mark where the ends meet. Measure the length of the paper or string in millimeters. Using a tape measure Wrap a flexible tape measure around the base of your finger. Make sure it's snug but not too tight. Read the measurement where the tape overlaps.