This is the gua sha I use.

Since it's heart-shaped, it's great for massaging along the jawline, and I heard that the side lines of the longer wings are well-designed, so using it around the eyes helps reduce wrinkles!

These days, so many brands are releasing great gua sha products. It's hard to compare since I haven't tried other products, but this is a decent facial gua sha, so I'm recommending it as a beauty accessory I bought with my own money.