Diamond rings come in many qualities and prices. To start with, not all diamonds are real: some are lab grown, others are simulated with cubic zirconia (CZ) or simply crystals like Swarovski. See our guide to find out more about real and fake diamonds, diamond weight and much more. Below you will find reasonably priced real diamond promise rings and simulated diamond ones, which are generally cheaper.

$50-$100 diamond rings
$100+ diamond rings
$0-$50 diamond rings

$50-$100 diamond rings


Thin silver diamond promise ring ($73.00)

Price as of 2017-11-13 07:16 GMT

A thin (2mm wide) promise ring in sterling silver with a tiny diamond at the center. The diamond is natural and although it is not very big (hence the reasonable price) it really shines and contrasts with the overall simplicity of the ring. The ring has rounded edges for extra comfort. This delicate ring will stand out by its simplicity and sleek design.


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Black tungsten carbide diamond ring ($109.00)

Price as of 2017-11-13 07:16 GMT

Tungsten carbide is the hardest metal on the planet, doesn’t scratch and is very resistant overall. It is ideal for manual laborers and very active people. This promise ring features a black diamond that sits very subtly in the black tungsten band, creating a rather mysterious look. A very discreet diamond ring for those of you worried that he’ll find it too shiny.


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Black cobalt diamond promise ring

Unavailable

Cobalt is one of the strongest metals (more than gold or silver) and is very scratch resistant, hypoallergenic and lightweight. The black color gives it a unique look in contrast with the silver colored line dividing the ring at the center and through the diamond. The black diamond is a real stone and weighs 0.05ct. All in all, a good quality diamond ring for a very reasonable price.


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Gold plated cobalt black diamond ring ($89.00)

Price as of 2017-11-13 07:16 GMT

This cobalt ring is gold plated for a more unique color. The diamond stone is black and weighs 0.07ct, while the yellow gold plating is made out of 14k gold. Sizes go up to US 13, make sure you double check your boyfriend’s ring size before buying it. This seller also offers engraving for a more custom piece of jewelry. Just note that once engraved, the ring can’t be returned.


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Carbon fiber black diamond promise ring ($104.99)

Price as of 2017-11-13 07:16 GMT

This 8mm wide titanium band is slightly different than all the previous ones: the inlay features a carbon fiber design all around the ring. In the central part, the 0.07ct black diamond contrasts with the polished finish of the titanium and matches well with the black inlay. The seller also offers laser engraving for a personalized message.


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$100+ diamond rings


Black gold diamond promise ring ($146.00)

Price as of 2017-11-13 07:16 GMT

This ring is made in silver and has been plated in black gold for a unique finish. Yellow gold, rose gold or white gold are also available at the same price. The central diamond is quite small (0.03-0.05 ct) but stands out from the rest of the ring due to the contrast in colors. It is possible to have it engraved in the inside or outside for an extra fee from the seller’s shop. You can choose words or characters, or even a signature or a custom symbol sent via email.


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Black diamond in tungsten carbide ring ($120.00)

Price as of 2017-11-13 07:16 GMT

Tungsten carbide is one of the hardest metals on earth: it is extremely durable, scratch resistant and will retain the surface finish for years. It is a great material for men working a lot with their hands or those who practice sports like climbing. This one is crafted with a bezel and incorporates a brushed finish. It also features a 0.07 ct black diamond in the center and can be engraved. The seller also offers all kind of birthstones. Take a look at the options in clicking bellow!


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Hex nut black diamond promise ring ($140.00)

Price as of 2017-11-13 07:16 GMT

Here’s another black diamond ring, with a twist. Remember those hex nuts your dad used to fix the car? Here’s the fashionable version. These are made of sterling silver, oxidized to give them a black color (see the one on the left) or with a matte finish for the silver color (the one on the right). You can also request it in gold or ask for a custom engraving.


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$0-$50 diamond rings


Tension set CZ tungsten ring

Unavailable as of 2017-11-25 03:39 GMT

This is a very cheap CZ tungsten ring for the quality! Tension set rings are different than traditional prong setting rings in that the only force keeping the stone form falling is the tension between the two open ends of the ring. Some studies show this is even more reliable than the traditional setting. This one is 8mm in width and has a CZ diamond squeezed in between the diagonal edges of the tungsten band.


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Tension set titanium CZ stone ring ($34.99)

Price as of 2017-11-13 07:16 GMT

A similar tension set ring made out of aerospace grade titanium, which is highly durable and light. The central part has been given a brushed finish while the edges are polished. You have the choice among birthstones or CZ stones for the most expensive of them (including clear color CZ for diamond) which are set by the tension of the titanium band.


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3 CZ stones gold plated titanium ring

Unavailable

This titanium band has been gold plated in the central part only, to give it a more luxurious look and to enhance the CZ diamond section. The sides semain in the original silver color of titanium. The CZ diamonds are set as an inlay within the ring. The promise ring can be hand engraved on the inside at no extra cost. Note that the engraving will look slightly home made (perhaps as if you had written it) so don’t expect very fancy fonts or symbols.


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