Jewelry Blog

Top 30 Half-Carat Diamond Engagement Rings

A diamond ring featuring yellow gold and swirling diamond-adorned shoulders.

One of the hardest choices that have to be made before the proposal is the choice of an engagement ring. The most useful trick is to understand and leverage weight to find the best value. We believe that a half-carat diamond strikes an excellent balance of weight and cost, as it provides decent finger coverage while remaining affordable. In fact, half a carat is the average diamond weight for an engagement ring in many countries. 

If you’re sold on the half-carat diamond, then the next step is to find your perfect half-carat diamond engagement ring. Well, you’re in luck! In this article, we will introduce our top 30 engagement ring recommendations that feature a diamond of approximately half a carat. So if you’re ready to find the engagement ring of your dreams, then read on for our varied list of stunning suggestions.

1. Chisana Ring

A platinum and yellow gold diamond ring with four small accent diamonds.

Price: $4,000. Learn more about the Chisana Ring.

First up, the enchanting Chisana Ring features a two-tone design with bold textures. The center stone is a 0.50-carat old European-cut diamond set in a platinum bezel. A small additional diamond sits in each corner of the platinum square, while the remainder of the mounting is comprised of 18k yellow gold. Finally, this vintage piece was handcrafted circa 1950.

2. Worcester Ring

A delicate platinum ring featuring small diamonds on the shoulders.

Price: $2,500. Learn more about the Worcester Ring.

The delicate Worcester is a French-made ring from the 1950s that features a straightforward design. The 0.50-carat round brilliant-cut center stone sits in on a round head and has I color and VS1 clarity. What’s more, the shoulders feature three additional diamonds each.

3. Hamilton Ring

A platinum ring featuring an emerald-cut diamond within a diamond halo.

Price: $5,300. Learn more about the Hamilton Ring.

Yet another 0.50-carat centered beauty, the elegant and stylish Hamilton Ring is a perfect fit for lovers of the diamond halo style. The emerald-cut center stone is GIA-certified as H color and VS1 clarity, while the additional diamonds total approximately 0.25 carats. What’s more, this platinum piece features a triple-wire shank, fine milgrain details, and baguette-cut accent diamonds.

4. Haywood Ring

A platinum diamond ring with detailed hand engravings and openwork.

Price: $3,200. Learn more about the Haywood Ring.

Handcrafted in platinum circa 1930, the Art Deco-era Haywood is a perfect fit for those who love elaborate details in their jewelry. This mesmerizing piece features a fully embellished rounded mounting that leads to equally magnificent tapered shoulders. The 0.50-carat old European-cut center diamond sits in an elevated setting and has J color and VS2 clarity.

5. Newbury Ring

An emerald-cut diamond ring with a double halo of emeralds and diamonds.

Price: $5,500. Learn more about the Newbury Ring.

If a pop of color is what you’re looking for, then we recommend the double halo Newbury Ring. This breathtaking platinum piece features a 0.50-carat emerald-cut diamond within a double halo comprised of an inner layer of emeralds and an outer layer of small round diamonds. What’s more, additional diamonds sit on the shoulders, while fine milgrain borders each diamond element.

6. Conestoga Ring

An Asscher-cut diamond ring with a double halo of sapphires and diamonds.

Price: $6,200. Learn more about the Conestoga Ring.

If a pop of color indeed is what you’re looking for but blue is preferred over green, then we recommend the spectacular Conestoga Ring. This regal beauty features an Asscher-cut center diamond GIA-certified as 0.50 carats with J color and VS1 clarity.

The surrounding sapphire and diamond double halo follow the center stone’s shape, while the shoulders display even more diamonds in uniquely shaped bold openwork. Finally, the total weight of the additional diamonds is approximately 0.56 carats.

7. Fleetwood Ring

A small ring featuring an Asscher-cut diamond in a sapphire halo.

Price: $5,000. Learn more about the Fleetwood Ring.

For a delicate alternative that satisfies the yearning for a pop of blue color, we recommend the charming and elegant Fleetwood Ring. The straightforward design centers around a 0.50-carat Asscher-cut diamond with J color and VS1 clarity, while three additional small diamonds adorn each shoulder. Finally, the center stone is enhanced by a halo of French-cut natural sapphires.

8. Allentown Ring

A sleek white gold diamond ring with small diamonds on the shoulders.

Price: $4,000. Learn more about the Allentown Ring.

Up next, the bold and stylish Allentown was handcrafted in 18k white gold circa 1950. This vintage piece features a 0.50-carat old European-cut diamond with I color and SI2 clarity in an elevated setting. What’s more, two small diamonds of approximately 0.07 carats each decorate each shoulder.

9. Central Park Ring

A dainty diamond ring with a round sapphire halo.

Price: $4,000. Learn more about the Central Park Ring.

If sapphire halos are what you’re after, then consider this round alternative. The Central Park Ring features a stunning 0.50-carat antique old European-cut diamond with J color and VS2 clarity enveloped by a 0.42-carat halo of French-cut calibré natural sapphires. What’s more, fine milgrain borders each side of the halo emphasizing its beauty. Finally, additional diamonds adorn the shoulders.

10. Atlanta Ring

An Asscher-cut diamond ring with a double halo of emeralds and diamonds.

Price: $4,800. Learn more about the Atlanta Ring.

If you found the Newbury Ring earlier on this list to be alluring, then consider its more symmetrical sister. Indeed, the Newbury is like an elongated version of the Atlanta Ring but is otherwise identical in design. The Asscher-cut center diamond is GIA-certified as 0.50 carats with J color and VS1 clarity, while the additional diamonds total 0.30 carats and the emeralds total 0.50 carats.

11. Mississippi Ring

A double halo ring featuring sapphires and diamonds around an Asscher-cut diamond.

Price: $4,800. Learn more about the Mississippi Ring.

For a straightforward sapphire and diamond double halo option, we recommend the beautiful Mississippi Ring. This exquisite piece features a GIA-certified Asscher-cut center diamond with J color and VS2 clarity. The surrounding double halo begins with a layer of diamonds followed by French-cut sapphires of a deep blue hue. What’s more, additional diamonds adorn the shoulders.

12. Oxford Ring

A platinum engagement ring with an emerald-cut diamond within a diamond halo.

Price: $4,700. Learn more about the Oxford Ring.

The Oxford Ring is an excellent choice for those who want a straightforward diamond halo ring.

This piece features a 0.50-carat emerald-cut center diamond with I color and VS1 clarity. The surrounding 0.24-carat diamond halo enhances the center stone’s perceived size especially well as there is a subtle gap between these elements. What’s more, additional diamonds adorn the shoulders. Finally, the triple-wire shank and fine milgrain borders complete this elegant design.

13. Berkshire Ring

An emerald-cut diamond engagement ring with a diamond halo.

Price: $4,700. Learn more about the Berkshire Ring.

Straightforward diamond halo rings are popular for a reason, so why not have options? The Berkshire Ring is quite similar to the Oxford Ring earlier on this list, but with a slightly shortened form and prioritizes clarity over color.

The 0.51-carat emerald-cut center diamond has H color and VVS1 clarity, while the small diamonds comprising the surrounding halo sit in segments of 1 to 3 stones bordered by fine milgrain. Finally, small diamonds adorn the shoulders leading to a stylish triple-wire shank.

14. Warwick Ring

An emerald and diamond double halo ring with wide and unique shoulders.

Price: $6,500. Learn more about the Warwick Ring.

For a green emerald alternative to the Conestoga’s blue sapphires, we present the Warwick Ring.

This double halo piece features an Asscher-cut diamond within an initial 0.42-carat layer of emeralds, followed by an outer layer of diamonds. The center stone is GIA-certified as 0.52 carats with J color and VS2 clarity. What’s more, baguette-cut diamonds bridge the center stone to the elaborate and wide shoulders. The adorned shoulders bring the total diamond weight to approximately 1.06 carats.

15. Starrett Ring

A platinum ring featuring an Asscher-cut diamond within a diamond halo.

Price: $4,500. Learn more about the Starrett Ring.

The delicate Starrett Ring features a bezel-set Asscher-cut center diamond GIA-certified as 0.52 carats with I color and VS1 clarity. The surrounding halo consists of trapezoid-cut diamonds totaling an additional 0.52 carats. What’s more, five small round diamonds adorn each shoulder. Finally, fine milgrain borders each diamond element.

16. Pacific Ring

An emerald-cut diamond ring with a surrounding halo of deep blue sapphires.

Price: $5,200. Learn more about the Pacific Ring.

The delicate Pacific Ring features a platinum triple-wire shank, a bezel-set emerald-cut diamond, and a deep blue sapphire halo. The center stone is 0.52 carats with J color and VS1 clarity, while the French-cut sapphires total approximately 0.66 carats. Finally, a small diamond adorns each of the small triangular shoulders.

17. Bragança Ring

An emerald-cut diamond ring with a double halo of diamonds and rubies.

Price: $5,200. Learn more about the Bragança Ring.

The lively Bragança Ring is an excellent choice for lovers of rubies. This double halo piece features a 0.52-carat emerald-cut center diamond with J color and VS1 clarity. The precious stone is enveloped by a halo of pink-red rubies, followed by a halo of small round diamonds. The rubies bring an exciting energy to the ring while providing a striking color contrast.

18. Vine Ring

An Asscher-cut diamond ring with a green emerald halo between diamond halos.

Price: $6,800. Learn more about the Vine Ring.

For lovers of the halo style, there is only one thing that could be better than a double halo; a triple halo! This spectacular piece features a 0.52-carat Asscher-cut diamond with J color and VS2 clarity. The surrounding triple halo is comprised of a 0.62-carat emerald layer in the middle, while the other two layers feature diamonds. The additional diamonds total approximately 0.68 carats.

19. Walton Ring

A double halo Asscher-cut diamond ring featuring rubies and diamonds.

Price: $5,200. Learn more about the Walton Ring.

The charming Walton Ring is another double halo piece featuring rubies and diamonds. Here, the Asscher-cut center diamond is GIA-certified as 0.51 carats with J color and VS2 clarity. The surrounding double halo begins with a layer of deep red French-cut rubies followed by a dazzling halo of small additional diamonds.

20. Neston Ring

A double halo engagement ring featuring an Asscher-cut diamond and emeralds.

Price: $5,800. Learn more about the Neston Ring.

Handcrafted in platinum, the Neston Ring features an Asscher-cut diamond surrounded by a double halo of emeralds and diamonds. The GIA-certified center stone is 0.52 carats with H color and VS1 clarity. Immediately surrounding the center stone is a 0.48-carat halo of emeralds, while a 0.38-carat halo of diamonds forms the outer layer.

21. Palma Ring

A three-stone diamond engagement ring with uniquely shaped delicate mounting.

Price: $5,200. Learn more about the Palma Ring.

For a truly special option, the three-stone Palma Ring offers a unique elongated design. The center-most diamond weighs 0.50 carats, while the three central diamonds are set in a North-South orientation and total approximately 1.00 carat. What’s more, the mounting is comprised of elegant diamond-set crescents that lead to swirling shoulders.

Finally, this Edwardian-era piece was handcrafted in platinum on 18k yellow gold circa 1900.

22. Genin Ring

A ring featuring three diamonds set vertically with sapphire and diamond shoulders.

Price: $4,500. Learn more about the Genin Ring.

For another unique piece, we recommend the Art Deco-era Genin Ring. Handcrafted in platinum circa 1920, this magnificent piece features alternating rows of diamonds and sapphires on wide tapered shoulders, while the head holds three main diamonds set in a North-South orientation. Although the piece does not feature a 0.50-carat diamond, the total diamond weight is approximately 0.53 carats.

23. Wilshire Ring

A platinum ring with a sapphire halo and a diamond halo.

Price: $4,500. Learn more about the Wilshire Ring.

The stunning Wilshire Ring features an elegant sapphire halo surrounded by an additional halo of dazzling diamonds. The GIA-certified emerald-cut center diamond weighs 0.51 carats and has G color and VS2 clarity. For a regal piece that will make your bride feel like a princess, the Wilshire is a fantastic choice.

24. Eastgate Ring

A platinum ring with an emerald-cut diamond within a diamond halo.

Price: $4,800. Learn more about the Eastgate Ring.

The Eastgate Ring is yet another stunning diamond halo ring. The emerald-cut center stone is GIA-certified as 0.54 carats with G color and VVS1 clarity. Not only is the center stone of high quality but its beauty is further enhanced by the surrounding halo of calibré baguette diamonds. Finally, additional small diamonds adorn the delicate shoulders.

25. Jersey Ring

A platinum and 18-karat yellow gold ring with a prominent center diamond.

Price: $3,200. Learn more about the Jersey Ring.

Handcrafted in platinum on 18k yellow gold circa 1910, the bold and stylish Jersey Ring comes from France during the Edwardian Era. This piece features a 0.45-carat old mine-cut center diamond with G color and VS2 clarity. What’s more, the stunning stone is set in prominent prongs that allow maximum visibility from all angles. Finally, each shoulder is adorned with three additional small diamonds.

26. Belmont Ring

A diamond ring with a unique and bold embellished mounting.

Price: $5,800. Learn more about the Belmont Ring.

The elaborate Belmont Ring features an exceedingly unique mounting comprised of dazzling diamond embellishments. The platinum piece was handcrafted in France during the Retro Era circa 1945 and features a 0.45-carat old European-cut center diamond with H color and VS2 clarity. In each of the four cardinal directions, additional diamonds adorn the mounting totaling 26 stones in all.

27. Sherborn Ring

A geometric diamond engagement ring with subtle openwork.

Price: $2,800. Learn more about the Sherborn Ring.

Handcrafted in platinum circa 1930, the Art Deco-era Sherborn Ring features a unique design characterized by subtle openwork. The center stone is a 0.55-carat old mine-cut diamond with I color and SI1 clarity. The openwork filigree is emphasized by fine milgrain and separates segments of additional diamonds.

28. Torrington Ring

A bold three-stone diamond engagement ring featuring a plain design.

Price: $3,000. Learn more about the Torrington Ring.

The three-stone Torrington Ring was handcrafted in platinum and 18-karat white gold circa 1900. The antique cushion-cut center diamond weighs 0.45 carats and is graded J for color and VS2 for clarity, while the accompanying diamonds total approximately 0.50 carats with I-J color and VS1-VS2 clarity overall. For a bold yet straightforward Edwardian-era treasure, the Torrington is a perfect pick.

29. Murren Ring

A yellow gold diamond ring with diamond-lined swirling shoulders.

Price: $3,500. Learn more about the Murren Ring.

The exquisite Murren Ring features a dainty swirled mounting lined with diamonds. Handcrafted in France circa 1905, this platinum and 18-karat yellow gold Edwardian-era piece features a 0.55-carat old European-cut center diamond with I color and SI2 clarity. What’s more, 0.16 carats of additional diamonds line the shoulders which gracefully swirl out to the shank.

30. Escan Ring

A silver and yellow gold flowerhead diamond ring featuring three diamond layers.

Price: $4,500. Learn more about the Escan Ring.

Last but certainly not least, the spectacular Escan Ring is sure to take her breath away. This silver and 18-karat yellow gold Victorian-era beauty was handcrafted circa 1890 and features a bold and detailed flowerhead design. The 0.55-carat center stone sits in an elevated position, while the three surrounding diamond layers progressively step downwards in floral patterns.

Speak With an Expert

Two jewelers assisting a customer in the Estate Diamond Jewelry showroom.

Deciding on the approximate diamond weight of your engagement ring is a great start, but it hardly narrows down the options to a manageable state. Understandably, finding the perfect engagement ring can be quite overwhelming. That’s where the experts at Estate Diamond Jewelry come in! For any questions or guidance in your journey to the perfect piece, don’t hesitate to reach out using the contact form below and an expert will assist you within a single business hour.

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About Benjamin Khordipour

Benjamin Khordipour is one of the jewelry researchers and gemologists at Estate Diamond Jewelry. He received his official gemological degrees from both the GIA and GUBELIN. He also regularly contributes to Business Insider, Forbes, Rapaport, CNBC, and Brides Magazine. Benjamin was born in New York and joined Estate Diamond Jewelry in 2014. He is passionate about vintage jewelry and diamonds. This blog was built on his strong belief that jewelers have a responsibility to properly educate their customers. In 2019, Benjamin co-authored the book The Engagement Ring Guide for Men. His favorite vintage jewelry era is the Art Deco Era and his favorite type of stone is the Kashmir Sapphire. He also collects rare antique pins.