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The three-stone engagement ring is one of the most technically balanced and symbolically meaningful designs in fine jewellery. It offers a harmonious structure — a central diamond framed by two perfectly matched side stones
At McGuire Diamonds, each three-stone ring is created with precision engineering and attention to optical balance. The alignment of the three diamonds must be flawless; the side stones must enhance, not overpower, the centre diamond. This level of refinement requires experience and expertise.
As one of Ireland’s leading producers of lab-grown diamond engagement rings, McGuire Diamonds brings together advanced technology and traditional gold smithing to produce rings that are visually striking, and durable. Each design is available with lab-grown or natural diamonds, giving clients the freedom to choose according to preference and philosophy.
The three-stone engagement ring has long carried the meaning of past, present, and future — three moments represented by three diamonds. While its symbolism appeals to many couples, the design’s real strength lies in geometry and proportion.
The central diamond represents the focal point of the ring, commanding attention through cut and carat weight. The two side stones are carefully calibrated to create symmetry, drawing light toward the centre. The setting must hold all three diamonds securely while maintaining an unbroken flow across the band.
Side stones are selected individually to ensure precise colour and clarity matching. Every ring is hand-assembled so the diamonds align perfectly in height and angle, producing a continuous line of brilliance. This meticulous process results in a ring that performs beautifully in light and feels balanced on the hand.
Three-stone rings can be executed in multiple configurations, each offering a distinct character while maintaining the same structural integrity. McGuire Diamonds offers several expertly balanced layouts, designed and crafted in Ireland.
The oval and round combination blends the modern shape of an oval centre with the brilliance of round brilliant cut side stones. This design offers the best of both worlds — contemporary lines softened by classic round accents.
In this style, precise proportion is everything. The side stones are carefully scaled to highlight the oval without overpowering it. Each ring is individually designed and manufactured to exact client specifications.
The oval three-stone ring has become one of the most sought-after modern designs. The elongated shape of the centre diamond creates an elegant, slimming effect on the finger, while also offering a larger face-up area than a round diamond of equivalent carat weight.
McGuire Diamonds typically pairs an oval centre with oval, pear-shaped or round side stones to create a tapered outline that enhances flow and symmetry. Each diamond is selected for consistent colour, clarity, and brilliance. The result is a design that feels fluid, balanced, and unmistakably refined.
The round three-stone diamond ring remains the most traditional and technically exacting style. Round brilliant diamonds deliver maximum sparkle, and when configured in a three-stone layout, they create a seamless arc of light across the finger.
Achieving this level of symmetry requires exceptional skill. McGuire Diamonds selects each diamond for identical cut precision and light return, ensuring the visual flow between stones is continuous and natural. It’s a timeless choice for clients who value precision, balance, and pure brilliance above trend.
Each three-stone engagement ring is produced entirely in-house. Once a design is approved, the process typically takes four to five weeks, covering CAD design, casting, setting, finishing, and final inspection.
Clients can choose from 18kt yellow, white, or rose gold, or platinum, paired with either lab-grown or natural diamonds. Every diamond is independently certified (GIA,HRD or IGI) and inspected for alignment, cut accuracy, and overall performance before setting.
This disciplined process ensures each ring meets McGuire Diamonds’ standards for proportion, polish, and precision — characteristics that define true craftsmanship.
McGuire Diamonds’ reputation has been built not through advertising but through client satisfaction and referral — a direct result of delivering rings that meet exact technical and aesthetic standards.
A lab grown diamond is a diamond that is created in a controlled laboratory environment using advanced technological processes. These diamonds are produced through methods such as Chemical Vapour Deposition (CVD) or High Pressure High Temperature (HPHT), which replicate the natural conditions under which diamonds form in the Earth's mantle.
Lab grown diamonds have the same physical, chemical, and optical properties as natural diamonds. They are genuine diamonds, indistinguishable from mined diamonds in terms of composition and appearance.
Unlike natural diamonds, which take billions of years to form, lab grown diamonds are created in a matter of weeks.
The CVD method involves a carbon-rich gas that breaks down and deposits carbon atoms on a substrate, forming a diamond layer.
The HPHT method mimics the high pressure and high temperature conditions found deep within the Earth to create diamonds.
Lab grown diamonds are graded by the same reputable gemological laboratories that certify natural diamonds, such as the Gemological Institute of America (GIA) and IGI. They are evaluated based on the four Cs: carat, cut, colour, and clarity, ensuring their quality and authenticity.
Because they are produced in a lab, lab grown diamonds avoid the ethical and environmental issues associated with traditional diamond mining. This makes them an excellent choice for consumers who prioritise sustainability and ethical sourcing.
Lab grown diamonds are typically more affordable than their natural counterparts, offering exceptional value without compromising on quality. This allows you to choose a larger or higher-quality stone within your budget.
Choosing a lab grown diamond means selecting a beautiful, high-quality, and ethically sourced gemstone that embodies both innovation and sustainability. Explore our stunning collection of lab grown diamond engagement rings to find the perfect symbol of your love.
Created in a controlled laboratory environment using advanced technological processes such as Chemical Vapour Deposition (CVD) or High Pressure High Temperature (HPHT). These methods replicate the natural conditions under which diamonds form in the Earth's mantle but achieve the result in weeks instead of billions of years.
Formed over billions of years deep within the Earth's mantle under extreme pressure and temperature. They are mined from the Earth, making each diamond a unique product of nature.
Both lab grown and natural diamonds have identical physical, chemical, and optical properties. They are composed of carbon atoms arranged in a crystal lattice structure, giving them the same hardness, brilliance, and fire.
Both types of diamonds are graded by reputable gemological laboratories, such as the Gemological Institute of America (GIA), based on the four Cs: carat, cut, colour, and clarity. This ensures that both lab grown and natural diamonds meet high standards of quality and authenticity.
To the naked eye, lab grown diamonds are indistinguishable from natural diamonds. Both types exhibit the same sparkle and visual characteristics.
Offer a more sustainable and ethical choice as their production avoids the environmental degradation and ethical issues associated with traditional diamond mining, such as habitat destruction, water pollution, and human rights concerns.
While many companies are adopting more sustainable practices, natural diamond mining can still have significant environmental and social impacts.
Generally more affordable than natural diamonds of similar quality. This price difference allows for larger or higher-quality stones within the same budget.
Tend to be more expensive due to their rarity and the extensive process required to extract them from the Earth.
Offer a wide selection of high-quality stones at various price points, making it easier to find the perfect diamond that meets your specifications.
While there is a broad range of natural diamonds available, finding a specific combination of carat, cut, colour, and clarity may be more challenging and expensive.
The sentimental value of a diamond often depends on the individual wearer. Some may prefer the historical and natural origin of a mined diamond, while others may value the technological innovation and ethical considerations behind a lab grown diamond.
In summary, both lab grown and natural diamonds provide stunning beauty, exceptional quality, and lasting durability. The choice between the two often comes down to personal values, budget, and preferences regarding ethical and environmental considerations.