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2020 Diamond Promotions, Sales, Discounts and Promo Codes

by David Weliver

High-quality diamonds rarely go on sale. The diamond market is so tightly controlled that you’ll almost never see discounts or score promo codes on the gems themselves. But you can score hefty discounts on ready-to-shop diamond jewelry as well as engagement ring settings.

A word of caution: If you do see a jeweler advertising huge discounts on diamonds, your guard should be up. When something seems too good to be true, it usually is.

December 2020 diamond sales & promo codes

Here are current online discounts and promotions on diamonds and engagement rings as of November 10, 2020:

Blue Nile promotions

  • Cyber Monday Week Sale: Up to 50% Off Select Diamond Jewelry. Use promo code CYBER2020.
  • $50 off your purchase of $1,000 or more (or $20 off any purchase) for new customers when you provide your email address.
  • FREE upgraded 2-day shipping from 11/18 until 12/16. FREE upgraded OVERNIGHT shipping from 12/17 until 12/22.
  • $50 off your purchase of $1,000 or more (or $20 off any purchase) for new customers when you provide your email address.
  • FREE upgraded 2-day shipping from 11/18 until 12/16. FREE upgraded OVERNIGHT shipping from 12/17 until 12/22.
  • Learn more about Blue Nile in our review.

Brilliant Earth promotions

  • Complimentary diamond necklace with any purchase over $1,000.
  • Return period extended until January 15, 2021 for purchases made between Nov. 1 and Dec. 16, 2020.

James Allen promotions

How often do diamonds go on sale?

Diamonds rarely go “on sale” in the traditional sense. But you can sales on engagement ring settings and promotions that can lower your cost of buying diamond jewelry.

Diamond promotions are so rare because diamond pricing is tightly controlled around the world. Every night, a diamond pricing guide is released called the Rapaport Price List that diamond dealers use to set prices.

Diamond retailers can only reasonably charge so much “over Rap” before their price will be so much more than competitors. Therefore, with their margins limited, there’s not much room to cut prices.

That said, the diamond business is competitive like any other. So diamond jewelers will occasionally run promotions and sales.

Any significant discounts (think 15% or more) are more likely to be applied to jewelry containing many smaller diamonds or to the setting of a diamond engagement ring rather than to the rock itself. But with settings costing between several hundred and several thousand dollars, such discounts can certainly help stretch your budget.

On this page we’ll keep track of current promotions and sales on diamonds and diamond jewelry at the largest online jewelers. If there’s a discount or coupon code available, we’ll help you find it.

How often does Blue Nile have sales?

Blue Nile typically holds sales at peak jewelry seasons: After thanksgiving (Black Friday and Cyber Monday), through-ought the Christmas Season, and in January/February before Valentine’s Day.

Not all of Blue Nile’s sales are listed publicly. They offer email subscribers sales up to 50% off that are never advertised elsewhere. Visit Blue Nile and sign up for their email promotions list to unlock their best sales.

How often does James Allen have sales?

Like other jewelers, James Allen holds sales during the holiday shopping season (between Black Friday and Cyber Monday up until a few days before Christmas). You can also expect sales around Valentine’s Day.

James Allen rarely, if ever, discounts the price of their loose diamonds, as their prices are already the lowest in the industry. But you can fine sales on ready-to-ship diamond jeweler and engagement ring settings.

Recommended Jewelers

James Allen

James Allen logo

James Allen is the most competitive diamond vendor with more than 150,000 loose diamonds in inventory. They have been a leader in selling diamonds online and pioneered 3D imaging so you can see the exact diamond you're buying in exquisite detail. You'll find it hard to beat James Allen in terms of price or selection. Read our James Allen review.

Shop James Allen »

Brilliant Earth

Brilliant Earth logo

Brilliant Earth is the global leader in ethically-sourced jewelry. Brilliant Earth goes above and beyond existing standards to offer “Beyond Conflict Free Diamonds” that they select for their ethical and environmentally-responsible origins. With over 120,000 diamonds in inventory, you can be sure to find your perfect diamond and feel good knowing it was responsibly-sourced. Read our Brilliant Earth review.

Shop Brilliant Earth »

Blue Nile

Blue Nile logo

Blue Nile is the world's largest online jeweler. Their reputation for quality and customer service is unparalleled in the industry. Blue Nile offers free shipping, a 30-day return policy and satisfaction guarantee. Read our Blue Nile review.

Shop Blue Nile »