This ear cuff features tanzanite, the December birthstone. The oval smooth-cut natural stone displays beautiful blue to purple hues depending on the angle. Tanzanite is a rare gemstone with "pleochroism," and its changing appearance under different lighting is its charm. The metal parts use K16gp, which is resistant to discoloration, and eight cubic zirconia stones sparkle delicately. Recommended for everyday wear or as an accent for special occasions. ●●About the Uniqueness of Natural Stones● The natural stones used have been nurtured over a long period in nature and are one-of-a-kind. Therefore, you may see the following "natural" characteristics: - Cracks (lines like cracks) → These are natural patterns formed during the stone's growth process. They are not cracks, but rather a part of the stone's appearance. - Inclusions → Small minerals or air bubbles may be included in the stone, giving it the charm of a miniature universe. - Differences in color and transparency → Even stones of the same type have different colors and brilliance. Please enjoy the gradation drawn by nature. - Variations in shape and size → Slight differences may occur during cutting and polishing. We hope you will understand this as the warmth of handmade craftsmanship.