An icon of the perfect proposal, round engagement rings have long had the ability to captivate and charm. The most popular of all diamond cuts, round brilliant diamond engagement rings are renowned for their brilliance and sparkle. There are an array of design possibilities with round engagement rings, whether you’re considering a round halo engagement ring, round solitaire engagement ring or something different altogether.

Created by gemologist and mathematician Marcel Tolkowsky, the brilliant cut boasts 58 facets which encourage beams of light to bounce in and out of the diamond to create a signature twinkle like no other cut. A round brilliant diamond is designed to excite, making it the ultimate engagement ring choice for many. Browse our collection of round halo engagement rings, round solitaire engagement rings, and more.

Capture forever in the form of a glistening pear shaped diamond engagement ring. A style that has continually beguiled since it was first unveiled in the 1400s, a pear cut engagement rings symbolise the ultimate declaration of love.

A pear cut diamond combines the round edge of a brilliant cut and the tapered edge of a marquise, meaning each pear shaped engagement ring is elegant and sophisticated yet with a distinct personality all of its own. Emerald and yellow pear cut diamonds are a beautiful alternative stone for something a little different, while pear shaped halo engagement rings truly are a sight to behold.

Pear engagement rings will never go out of style, but they will always make a statement.

Sleek and elegant, emerald cut engagement rings are celebrated for their long lines and beautiful symmetry. Emerald cut diamonds are rectangular with chiseled corners and deep facets which run parallel to the edge of the stone making it appear slim.

Emerald engagement rings exude Art Deco charm, whilst remaining effortlessly classic. What’s more an emerald cut diamond is versatile and lends itself to many settings - perfect for those looking for a halo, single stone or three stone emerald engagement ring.

Explore our unique collection of emerald cut diamond and sapphire engagement rings – including a range of halo designs – crafted by hand to inspire the perfect proposal.

Often considered to be a modern design cushion cut diamond engagement rings actually date back to the 19th century.

A combination of the old mine cut and modern oval shape, cushion cut engagement rings bring a touch of glamour and sophistication while retaining vintage charm.

Most cushion cuts feature an oval or rectangular cut diamond in the centre, with round edges to give it a soft and subtle look. Often complemented with a diamond halo, a cushion cut engagement ring is a glamorous choice for those looking for a little extra sparkle.

Allow our exclusive collection of hand-crafted, cushion cut diamond engagement rings to dazzle you – including designs featuring alluring rubies, stunning sapphire and tasteful yellow diamonds.

Boasting a captivating charm, princess cut diamond engagement rings add a regal touch to any proposal. Designed to maximise the sparkle of the diamond with its breathtaking intricate details, a princess cut engagement ring uses modern cut that continually inspires.

Each of the 76 facets of a princess cut diamond, designed in a square face and inverted pyramid profile, come alive when the diamond is moved - with brilliant flashes of scintillating colour unleashed when it hits the light. Mesmerising whether set as a solitaire, a three stone engagement ring or a shimmering halo a shimmering halo, a princess cut diamond engagement ring is nothing less than extraordinary.

Let our collection of platinum, white gold and yellow gold princess cut diamond rings inspire you and set you up with a proposal for the ages.

Radiating grace and romance, a marquise cut engagement ring is the perfect choice for a proposal of royal proportions. Marquise cut engagement rings are steeped in history, with the first marquise diamond ring unveiled in the 18th century after King Louis XV of France commissioned a cut that resembled the shape of his beloved's lips. A marquise cut diamond was deemed the perfect representation.

Boasting 58 facets, the elliptical shape and pointed ends of a marquise cut diamond create a slender look on the finger. A marquise cut diamond also has the benefit of looking larger than diamonds of different cuts, despite a similar carat weight. We offer a range of marquise diamond engagement ring options, with each marquise engagement ring sure to wow whoever receives it.

Exuding grace and elegance, oval engagement rings never fail to deliver a truly breathtaking proposal.
Since the late 1950s, oval diamond engagement rings have provided a popular alternative to the round brilliant cut - offering similar levels of fire and brilliance whilst retaining a unique charm.

Featuring 58 facets the elongated shape is flattering on the finger, while oval cut diamonds often look larger than other cuts of a similar carat weight. For those looking for additional glamour oval halo engagement rings are the perfect choice, displaying tremendous levels of sparkle.

From oval halo and solitaire engagement rings to vintage designs and colourful stones, our collection and bespoke service can offer something for everyone.

A cuboid shaped diamond takes centre stage in radiant cut engagement rings. This shape is characterised by its trimmed corners combining the elegance of the emerald cut diamond with the brilliance of the round. Radiant cut diamond engagement rings feature a staggering 70 facets enabling the colour movement within the stone to be maximised. The radiant cut lends beautifully to yellow diamonds as the standout, sparkling cut radiates with an added diamond halo. Showcasing class and sophistication, radiant cut diamonds are a sight to behold.

A cuboid shaped diamond takes centre stage in radiant cut engagement rings. This shape is characterised by its trimmed corners combining the elegance of the emerald cut diamond with the brilliance of the round. Radiant cut diamond engagement rings feature a staggering 70 facets enabling the colour movement within the stone to be maximised. The radiant cut lends beautifully to yellow diamonds as the standout, sparkling cut radiates with an added diamond halo. Showcasing class and sophistication, radiant cut diamonds are a sight to behold.

Heart shaped diamonds are a modified version of the round brilliant cut. Because they reflect lots of light, the color of a heart shaped diamond is harder to distinguish than it is in a diamond with a large table, such as an Emerald or Asscher cut.

Also known as the square emerald cut, Asscher cut diamonds are roughly square in shape when viewed from above but have cut corners for more light to enter the diamond. They typically have 50 or 58 facets and their ideal length to width ratio is 1 to 1.04. Because of their many facets, high crown, and depth, they can produce outstanding brilliance and create a ‘hall of mirrors’ effect.

The diamond, which has an even pattern of bright and dark areas, scores in the top category for all grade-setting determinants.

This diamond’s grade is determined by brightness, scintillation, and polish. Although no individual proportions would necessarily cause its brightness or scintillation to perform poorly, the combination of this particular set of proportions leads to increased darkness in the pavilion mains.

This diamond’s grade is limited by its scintillation. In this case, the somewhat shallow pavilion angle produces dark pavilion mains.

This diamond’s grade is limited by its scintillation. The combination of a shallow crown angle and a somewhat shallow pavilion angle leads to a face-up appearance with a lack of contrast and general darkness.

This diamond’s grade is limited by its weight ratio. Although most of the proportions for this diamond are fairly standard, the extremely thick girdle greatly increases the total depth. Therefore, this diamond’s diameter is much smaller than its carat weight would indicate.

While there are differences in color between D, E, and F diamonds, they can be detected only by a gemologist in side by side comparisons, and rarely by the untrained eye.

D-F diamonds should only be set in white gold / platinum. Yellow gold reflects color, negating the diamond's colorless effect.

While containing traces of color, G-J diamonds are suitable for a platinum or white gold setting, which would normally betray any hint of color in a diamond.

Because I-J diamonds are more common than the higher grades, they tend to be a great value. An I-J diamond may retail for half the price of a D diamond. Within the G-J range, price tends to increase 10-20% between each diamond grade.

While containing traces of color, G-J diamonds are suitable for a platinum or white gold setting, which would normally betray any hint of color in a diamond.

Because I-J diamonds are more common than the higher grades, they tend to be a great value. An I-J diamond may retail for half the price of a D diamond. Within the G-J range, price tends to increase 10-20% between each diamond grade.

Beginning with K diamonds, color (usually a yellow tint) is more easily detected by the naked eye.

Set in yellow gold, these warm colored diamonds appeal to some, and are an exceptional value. Others will feel they have too much color. Due to its perceptible color tint, a K diamond is often half the price of a G diamond.

Diamonds in the N-R color range have an easily seen yellow or brown tint, but are much less expensive than higher grades.

Lumera does not carry diamonds in this color range due to a lack of demand. If you desire a diamond in this range, request a price quote using the custom diamond search.

For almost all customers, S-Z diamonds have too much color for a white diamond.

Lumera does not carry diamonds in this color range. If you desire a diamond in this range, request a price quote using the custom diamond search.

Flawless (FL) No inclusions and no blemishes visible under 10x magnification. Internally Flawless (IF) No inclusions visible under 10x magnification.

Very, Very Slightly Included (VVS1 and VVS2) Inclusions so slight they are difficult for a skilled grader to see under 10x magnification

Very Slightly Included (VS1 and VS2) Inclusions are observed with effort under 10x magnification, but can be characterized as minor.

Slightly Included (SI1 and SI2) Inclusions are noticeable under 10x magnification

Included (I1, I2, and I3) Inclusions are obvious under 10x magnification which may affect transparency and brilliance

Refers to the weight in units of a diamond. All properties being equal, larger diamonds are rarer and more valuable than smaller diamonds.

The Gemological Institute of America (GIA) is the world’s largest and most respected non-profit institute of gemological research and learning. The GIA Gem Trade Laboratory was established in 1949 and has grown to nearly 400 staff operating in New York and California. The GIA Diamond Grading Report includes a full page A4 report, or an A5 Diamond Dossier, with a diagram of your diamond’s clarity characteristics and unique security features.

The International Gemological Institute (IGI) is the largest independent grading and appraisal organisation in the world. The IGI was founded in 1975 in Antwerp and has grown to over 350 scientific technicians and gemologists who issue more than 550,000 reports a year. The IGI Diamond Report provides a full page A4 report, a diamond diagram, photograph and unique security features.