Is Costco Jewelry Good? Here’s What You Need to Know
If you’re a frequent Costco shopper, you may have noticed the warehouse offers high-value jewelry featuring real gold, diamonds, and gemstones at more affordable prices than many jewelry stores. As such, consumers who’ve purchased pieces at the members-only club frequently rave about the great deals they’ve scored. But while it’s good quality, Costco jewelry isn’t without its faults.
If you’re considering purchasing any pieces from the chain — whether an especially sentimental piece like an engagement ring or wedding rings, or you’re just looking for a simple gift like a pair of diamond earrings — and are wondering, “Is Costco jewelry good,” here’s what you need to know.
Keep reading to find out:
- What types of jewelry Costco sells
- Whether Costco’s jewelry is a good value
- The pros and cons of Costco jewelry
Plus, discover the jewelry insurance coverage you need to protect your Costco pieces from any theft, damage, loss, or mysterious disappearance.
What You Will Learn
What Kind of Jewelry Does Costco Sell?
Costco sells a range of diamond jewelry, gemstone jewelry, pearl jewelry, gold and platinum jewelry, and luxury watches, from the more extravagant to smaller pieces. While you might not think of shopping for fine jewelry in the same place that you buy household essentials in bulk, there’s no denying that Costco’s jewelry options, both in-store and online are impressive.
All jewelry is completely finished and available for sale as is, so you won’t be able to buy any custom pieces or make any adjustments like a traditional jewelry store. Still, whatever your style may be, you can probably find a Costco piece you want to take home.
For example, Costco’s collection often includes:
- Gemological Institute of America (GIA)-graded diamonds, including earrings, bracelets, necklaces, engagement rings, and solitaire rings
- Gemstone earrings, rings, and necklaces, including those with rubies, lab-created emeralds, and sapphires
- Pearl necklaces, earrings, rings, and bracelets
- 14k gold, 18k gold, and 950 platinum pieces
- Gold, silver, and platinum bouillon
- Luxury and smart watches for both men and women
Should You Buy Gold and Diamonds at Costco?
The short answer is yes. In terms of jewelry, Costco is most well-known for its gold and diamonds, both of which are high-quality and highly reviewed. Over the course of buying either, here’s some questions that may come up to consider.
Is Costco Jewelry Real?
Yes, Costco jewelry is completely real and authentic; it’s not costume jewelry. The same gemstones, precious metals, watches, and similar luxury items that you might purchase at any retail jewelry store are similarly available at Costco.
Are Costco Diamonds Good Quality?
Costco’s diamonds are just as gorgeous as any diamond you might buy elsewhere, and the warehouse provides plenty of documentation to ensure that they are of a high quality. All Costco diamonds are untreated and natural, and they’re available at various carat weights.
Costco also has its own team of gemologists that have graduated from GIA, and when you buy a diamond from Costco, you’ll receive a GIA grading report. This ensures that all diamonds you buy at Costco boast a clarity of at least VS2 and a color rating of I or better, as defined by the GIA guide. As well, cut grades must range from Good to Excellent.
In other words, if you decide to shop for diamond jewelry at Costco, you’ll have all the information at your disposal to select a high-quality, spectacular diamond that fits your budget.
Is Costco Gold Jewelry Good Quality?
Costco only sells high-quality 14-karat and 18-karat gold in both yellow gold and white gold designs. Costco does not sell filled or plated gold.
Just as is the case with most white gold that you’d buy anywhere, Costco’s white gold pieces have been plated with rhodium, a process that maintains the piece’s brilliance, luster, and durability.
Is Costco Jewelry a Good Value?
So many people note they are exceedingly happy after they purchased their jewelry at Costco. Many report that, whether they buy their piece on sale or at regular price, they usually end up having paid a much lower price than they would for a similar piece elsewhere.
The quality of Costco jewelry and the low prices made possible with a membership means that, overall, shoppers enjoy a great value when purchasing a piece of Costco jewelry.
Pros and Cons of Buying Costco Jewelry
Of course, as with any big purchase, there are pros and cons of buying Costco jewelry.
What Are the Pros of Buying Costco Jewelry?
The primary benefits of buying Costco jewelry include the high value for a low cost, and the convenience of buying jewelry right at the warehouse or online.
Furthermore, happy shoppers have appreciated:
- Costco’s very generous, 100% satisfactory return policy, which also applies to jewelry
- The long-lasting durability and beauty, years after purchase

Beyond all of the upsides of buying Costco jewelry, the downsides include the inability to create a custom piece, the lack of extensive options, and lack of the services that you might find with a traditional jeweler, such as resizing or cleaning.
Additionally, because Costco is a nationwide store with a lot of the same products at each location, you may find that your new diamond studs or diamond ring are hardly one-of-a-kind, and many other shoppers around the country could be wearing the exact same piece. If this is of concern for you, you may want to shop elsewhere.
Other downsides that shoppers report include:
- Limited ring sizes available in-store
- Luxury watch brands do not consider Costco an authorized retailer
Is Costco Jewelry Worth It?
At the end of the day, only you’ll be able to determine if Costco jewelry is worth it based on your unique needs and wants, but one thing is sure: Costco’s jewelry is an excellent value and just as good of a quality as what you could buy anywhere else.
We’ve presented the details, now it’s up to you to decide if you’ll be making your next jewelry purchase right before stocking up on your household essentials.
Is Costco Jewelry Good Quality? FAQs
Is Costco a Good Place to Buy Jewelry?
Yes, when you compare Costco against a local or chain jewelry store, many shoppers say the company sells jewelry of a better quality at a lower price. In fact, many past shoppers say they now prefer to buy all their jewelry at Costco.
What Kind of Jewelry Can You Buy at Costco?
Costco sells a large range of diamond, gold, and other jewelry, including watches. So you can easily find the right item for your needs and budget, whether you’re shopping for an anniversary present, engagement ring, or just something special for yourself.
How Good Is Costco Jewelry?
Costco has become known for selling its own line of fine jewelry, and Costco jewelry quality is highly praised as an overall excellent value for the deal you get and the money you save.
Does Costco Sell Gold Coins?
Costco does not sell gold coins, but it does sell gold bars.
Why Do People Buy Jewelry at Costco?
There are many reasons why Costco members choose to buy jewelry at the membership warehouse, including convenience, great prices, long-lasting durability, and Costco’s very generous return policy that some say they’ve used to return jewelry years after their initial purchase.
Whatever the Brand, Protect Your Jewelry with BriteCo Insurance
Costco’s high-value jewelry has naturally gained a loyal following of jewelry wearers. However, whether you’ve purchased your jewelry with CostCo, Blue Nile, James Allen, Brian Gavin, or any other popular retailers or designers, you need one more thing: jewelry insurance.
Jewelry insurance can ensure you can replace or repair your jewelry in the event of mysterious loss or disappearance, accidental damage, and theft, with worldwide coverage.
Get your quick and easy BriteCo jewelry insurance quote now.



