Collection: 1ct Lab Diamond Engagement Rings

A 1 carat lab grown diamond engagement ring offers the classic proportions and brilliance of a one-carat diamond with the value and sourcing advantages of a lab-created stone. Lab grown diamonds have the same chemical, physical and optical properties as mined diamonds and are graded using the same standards for cut, color, clarity and carat weight.

Gema&Co 1 carat lab grown diamonds are selected at D/E color and VS+ clarity or better, with stones 0.80 carat and larger accompanied by IGI certification. Explore our complete collection of lab grown diamond engagement rings to compare additional diamond sizes, shapes and settings.

Carat measures a diamond's weight rather than its physical dimensions, so two 1 carat diamonds can appear different in size depending on their shape and proportions.

A well-proportioned 1 carat round diamond typically measures approximately 6.4–6.5 mm in diameter. Elongated shapes such as oval, pear, radiant and marquise distribute their weight differently and can provide greater visual coverage across the finger.

For example, a typical 1 carat oval lab grown diamond measures approximately 7.7 × 5.7 mm, although exact dimensions vary according to the individual diamond's proportions.

Round lab grown diamonds are a timeless choice known for exceptional brilliance and symmetrical proportions. Their versatility makes them well suited to everything from minimalist solitaire settings to pavé and halo designs.

Oval lab grown diamonds have an elongated silhouette that can create greater visual finger coverage while retaining the sparkle associated with brilliant-style faceting.

Emerald cut lab grown diamonds feature long step-cut facets and a distinctive hall-of-mirrors appearance, creating a sophisticated alternative to brilliant-cut shapes.

Radiant cut lab grown diamonds combine an elongated or rectangular silhouette with brilliant faceting for strong sparkle and a contemporary appearance.

Pear and marquise lab grown diamonds offer elongated profiles and distinctive shapes for shoppers looking for an alternative to traditional round and oval engagement rings.

Yes. One carat is a classic engagement-ring size because it provides noticeable presence on the finger while remaining practical and comfortable for everyday wear.

The appearance of a 1 carat diamond depends heavily on its shape, cut proportions, finger size and setting. An elongated oval, pear or marquise may appear larger from above, while a halo can increase the overall visual footprint of the ring.

If you prefer something outside the standard collection, Gema&Co can also create a custom engagement ring using your preferred diamond shape, dimensions, setting, band width and precious metal.

The same 4Cs — cut, color, clarity and carat weight — used to evaluate mined diamonds also apply to lab grown diamonds.

Cut has a major influence on a diamond's brilliance and should generally be prioritized over simply choosing the highest possible color or clarity grade.

Color describes the presence or absence of visible color in a diamond. Gema&Co lab grown diamonds are typically selected at D or E color, placing them within the colorless range.

Clarity evaluates inclusions and blemishes within a diamond. Gema&Co diamonds are typically VS clarity or better, offering high clarity without requiring shoppers to pay specifically for extremely high clarity grades that may provide little visible difference to the unaided eye.

Carat weight measures the diamond's weight. At exactly or approximately one carat, its visible size will still vary according to diamond shape and cut proportions.

A solitaire setting places the focus entirely on the 1 carat center diamond and is one of the most timeless engagement-ring styles.

A pavé setting adds smaller diamonds along the band for additional brilliance. Explore Gema&Co’s pavé lab grown diamond engagement rings for designs available across multiple center-stone shapes.

A halo setting surrounds the center diamond with smaller diamonds, increasing sparkle and the ring's overall visual presence.

A hidden halo places accent diamonds beneath the center stone, adding detail and sparkle from the side while maintaining a more traditional center-stone appearance when viewed from above.

A bezel setting surrounds the diamond with precious metal, creating a clean contemporary appearance while providing additional protection around the stone.

Yes. A lab grown diamond is a real diamond with the same fundamental chemical composition, crystal structure and physical properties as a mined diamond. The primary difference is its origin: one forms naturally within the Earth, while the other is created under controlled laboratory conditions.

A 1 carat round diamond is typically around 6.4–6.5 mm in diameter, although exact dimensions vary according to cut and proportions. Elongated shapes such as oval, pear and marquise have different dimensions and may provide greater face-up coverage.

No. One carat provides a classic, substantial appearance and works particularly well for someone who prefers balanced proportions rather than an oversized center stone. Diamond shape and setting can also significantly influence how large the finished ring appears.

Yes. Gema&Co lab grown diamonds 1.00 carat and larger include IGI grading certification. Gema&Co diamonds are typically selected at D color and VS+ clarity or better.

Yes. Gema&Co lab grown diamond engagement rings can be customized by carat weight, setting and stone shape, and fully custom designs are also available through the Gema&Co bespoke process.

Lab grown diamonds generally offer significantly more diamond for the same budget than comparable mined diamonds. This allows shoppers to prioritize characteristics such as cut, shape, setting or overall design without the price premium associated with a naturally mined stone.