Soft way to clean silver jewellery that has stones in it?

I've been looking after some sterling (S925) jewellery set with natural lapis lazuli, and wanted to share a caution in case anyone has inherited or still wears similar pieces. S925 is a metal fineness mark only — it is not a lab ID for the stone. Lapis is porous, and treatment is unknown unless documented, so the foil-and-soda dip, toothpaste, ultrasonics, and household chemicals that are often suggested for plain silver are a poor default here (they can dull or stain the stone). A soft dry cloth after wear has been the safe habit for us. Short studio note if useful: lakazur.com/lapis-lazuli-gemstone/