Customer Service

Our pieces are made with high-quality materials like sterling silver, stainless steel, gold-plated metals, and carefully selected crystals or gemstones. Each product page includes detailed material information.

Yes stainless steel is waterproof but we recommend keeping your jewelry away from hot water, perfume, and harsh chemicals to preserve shine and prevent tarnishing. It’s best to remove your pieces before swimming or showering.

Absolutely! We specialize in custom charm jewelry. You can choose your own charms, initials, birthstones, and more to tell your unique story. Just look for the “customize” option on applicable products.

Yes! All MUMU pieces come beautifully packaged and ready for gifting. You can also add a personalized note during checkout.

Store your jewelry in a dry place, wipe gently after use with a soft cloth, and avoid pulling or stretching delicate chains. Check out our full Jewelry Care Guide for more tips.

Returns are accepted within 30 days of purchase, as long as items are unused, with tags, and in original packaging. Final sale items and custom pieces are not eligible. Shipping fees are non-refundable.

We’re here to help! Contact us with a photo of the issue. Please note that damage from regular wear, lost charms, chain breakage, or improper storage is not covered by our return or repair policy.

Orders typically ship within 3–5 business days. Shipping times vary by location, but standard delivery within Canada and the US usually takes 10–15 business days.

All MUMU jewelry is lead-free, nickel-free, and cadmium-free, which are the most common causes of skin irritation.
That said, everyone’s skin is different — and you know yours best!
To help you shop with confidence, we list the base metal and plating material on every product page, so you can always double-check before you buy.

You can reach us anytime at [your email address] or DM us on Instagram @mumu.jewelry. We’re always happy to help!