The Halloween Season Sale at Mini Museum gives you 20% off selected jewelry and watches through November 1. This code works best if you are buying from the items marked down in the promotion, since the discount only applies to those products.
Smaller carts under $50: If you are shopping for a single piece or a modest collection under $50, the Halloween Season Sale code is your best option provided the items you want are included in the sale selection. The 20% Off Everything code will also give you the same discount on all items, so you can use whichever code applies to the products in your cart.
Orders of $50 to $74: The 20% Off + Free Meteorite code saves you 20% on your entire order and adds a free meteorite specimen when you spend over $50. This stacks a discount with a gift, so the code gives more than 20% off alone in terms of total value. Your alternative is the 20% Off Everything code, which saves the same percentage but without the free item. If you want the meteorite, the first code wins. On a $60 order, the 20% Off + Free Meteorite code takes off $12, leaving you $48 plus the meteorite. If the free item appeals to you, this is your pick.
Orders of $75 and above: At $75 and up, you have several routes. The 20% Off Everything code takes 20% off your total. The 20% Off + Free Meteorite code gives you the same percentage discount, but its terms state it cannot be combined with any other offers, so you cannot layer it with free shipping. The Free Shipping on Orders Over $75 offer (no code needed) covers delivery costs. The Free Cosmic Del Cielo Meteorite on Orders Over $50 is already available at lower spend levels. For a $100 order using the 20% Off Everything code, you save $20, bringing your subtotal to $80. Adding free shipping saves you the delivery fee on top. This combination typically gives the most value when you are buying full price items. However, if the items you want are in the up to 70% off new markdowns sale, that takes priority: a 70% markdown leaves you paying only 30% of the original price, which far exceeds any percentage code.
On sale items: Check the up to 70% off new markdowns first. A 70% reduction beats any percentage code. The up to 25% off selected bundles also applies only to bundle items, so compare that discount to the 20% codes if bundles are what you want. Neither the 20% codes nor the bundle discount can be paired with each other unless the offer terms say otherwise, so pick whichever leaves the lower final price on the items in your cart.
Orders with the $5 off automatic discount: The $5 off with international shipping applies automatically at checkout with no code required, so if you are shipping internationally, you get this in addition to a percentage discount code. This means the 20% Off Everything code can sit on top of the $5 off, combining for larger savings.
The biggest code in the 12 months to October 2026 was 30% off in July, making today's 20% codes close to typical but not the year's best. Our team tested 28 Mini Museum codes at checkout in that same window, so you can trust the codes listed here will work.
To pick between codes for the same basket, add up your final price with each option and go with whichever is lower. The 20% Off + Free Meteorite code cannot combine with other offers, but the 20% Off Everything code and 20% Off Selected Products code can both stack with free shipping on orders over $75.