The KonMari (Marie Kondo) website sells a shaped piece of solid aluminium, making the following claims for it:
Tuning Fork
Regular price $50.00
Marie uses a tuning fork in her everyday life to help her to reset. Striking it against something solid – a crystal is ideal – creates pure tones that have the power to restore a sense of balance. This KonMari tuning fork can help you to reset and be present. Made of aluminum alloy, it has a frequency of 4,096 hertz, which is said to amplify the healing properties of crystals – especially quartz.
https://shop.konmari.com/products/konmari-decor-konmari-tuning-fork
Is striking the Marie Kondo tuning fork on a crystal (especially quartz) more effective than placebo in healing illness, injury, or medical conditions of any kind?
IMO they’re being deliberately vague to avoid taking full responsibility for the healing powers they’re claiming the device possesses - eg they use weasel words “said to”.
An answer that addresses the lack of healing powers of crystals in general would be very welcome - but I was concerned that you would deem a more general question along those lines insufficiently specific.
– A E Jan 04 '20 at 14:5660×60×24 = 86,400seconds. 86,400 has unique prime factors: 2⁷, 3³, and 5². The factors and their exponents, {2,3,5,7}, form the set of lowest prime numbers. That can't be coincidence. Further, combine the middle factor with either of the other two:2×7+3×3=23and3×3+5×2=19, both of which are prime numbers, and consecutive primes at that; and it becomes obvious. And! the intervening prime numbers are {11,13,17}, whose sum is 41, yet another prime! – Ray Butterworth May 12 '23 at 15:27