Turquoise River Slime[Limited Edition] Texture clear base slime with Turquoise gemstone and it's best for slow play. Scent Blue Cedar & Lavender Play Level Intermediate Turquoise has been used as a gemstone and ornamental stone for thousands of years. Native Americans believe that turquoise represents life giving waters and green tones of nature. They also believe it's a protective stone that attracts helpful spirits and repels negative energy.