This stone is for external only, not for consumption. Delay sex, increase timing, long lasting, increase ejaculation, increase power, increase stamina. Black Stone is not an actual piece of stone but it’s in a solid form of a pebble made from Uncaria tree extract, a species in the genus Uncaria found in Southeast Asia Natural herbal compounds extracted from natural Uncaria plants which only grow in the equatorial part of the world because of climatic reasons. This astringent is odorless and has no expiration date. Totally natural. As mentioned above, it has been used for centuries by Asian people as a catechu with areca and betel, for tanning and dyeing, and as herbal remedies and certain modern medicines. The main purpose is for delay ejaculation, enhance your sexual performance, harder erection and last longer in bed. Delay sex, increase timing, long lasting, increase ejaculation, increase power, increase stamina. Black Stone is applied externally and is absorbed through the skin and does not work by numbing the penis like other products, but instead has very potent property that delays the orgasm reflex without dulling sensitivity or any pleasurable sensations. It also doesn’t interfere with any other stimulating activity you would want to employ since it is absorbed through the skin quickly and easily. Unique Appearance: The stone features a matte black color and irregular, rugged texture typical of raw mineral samples. Compact Size: Ideal for collectors, this small specimen measures approximately 2-4 inches (5-10 cm) in length Combined. Collectible Item: A fascinating addition to any rock, mineral, or geological collection. Natural Formation: Piedra is a type of sedimentary rock formed over millions of years through natural processes.