The 1 carat Portuguese cut is one of the rarest and most extraordinary diamond choices available — combining the world's most popular carat weight with an exceptional 160+ facet arrangement that delivers a level of fire and brilliance simply unmatched by any other diamond cut. At Variation, explore our certified collection of 1 carat Portuguese cut lab grown diamonds, IGI certified, conflict-free, and priced up to 80% less than natural diamonds.
About 1 Carat Portuguese Cut Lab Grown Diamonds
The 1 carat Portuguese cut lab grown diamond is one of the most extraordinary and distinctive diamond combinations available — pairing the world's most popular carat weight with one of the rarest and most complex diamond cuts ever created. Featuring over 160 precisely arranged facets — nearly triple the facet count of a standard round brilliant — the Portuguese cut delivers a level of fire, brilliance, and scintillation that is truly in a class of its own. At Variation, our IGI certified 1 carat Portuguese cut lab grown diamonds are available in D to F color and VVS1 to VS2 clarity — priced up to 80% less than an equivalent natural diamond.
Why Choose a 1 Carat Portuguese Cut Lab Grown Diamond?
The Portuguese cut is the choice of those who demand the absolute pinnacle of diamond brilliance — a cut so complex and so meticulously crafted that it delivers a visual experience unlike anything else in the diamond world. At 1 carat, the Portuguese cut's extraordinary 160+ facet arrangement creates a mesmerizing depth and complexity of light that makes every other diamond cut appear simple by comparison. For buyers who want a 1 carat diamond that is genuinely extraordinary — a stone that stops people in their tracks — the Portuguese cut is the definitive choice.
- 160+ precisely arranged facets — nearly triple the facet count of a round brilliant
- 6.5mm face-up diameter — the same presence as a round brilliant with extraordinary additional brilliance
- Unmatched fire and scintillation — the most brilliant facet arrangement of any diamond cut
- IGI certified — every stone independently graded and verified
- D, E and F color — the three highest color grades available
- VVS1 to VS2 clarity — all eye-clean, all exceptional quality
- Up to 80% less than an equivalent natural Portuguese cut diamond
How Big Is a 1 Carat Portuguese Cut Lab Grown Diamond?
A 1 carat Portuguese cut diamond measures approximately 6.5mm in diameter face-up — the same face-up size as a 1 carat round brilliant. While the Portuguese cut does not deliver additional face-up size compared to a round brilliant, it delivers something far more valuable — an extraordinary additional depth and complexity of light performance that makes it appear more alive, more vibrant, and more brilliant than any other 1 carat diamond available.
The Portuguese cut's 160+ facets create a mesmerizing visual depth that makes the stone appear to glow from within — a quality that is immediately and unmistakably visible even to the untrained eye at 1 carat. This extraordinary light performance is the Portuguese cut's defining characteristic and the reason it is one of the most sought-after specialty cuts in the world.
How to Choose the Best 1 Carat Portuguese Cut Lab Grown Diamond
Prioritize Cut Precision Above Everything
The Portuguese cut's extraordinary brilliance depends entirely on the precision of its 160+ facet arrangement. Even the slightest deviation in facet alignment dramatically reduces the cut's legendary light performance. Always choose stones with Excellent symmetry and Excellent or Very Good polish grades to ensure the unique facet arrangement performs at its absolute best. At 1 carat, a perfectly cut Portuguese cut diamond delivers a visual experience that simply cannot be achieved by any other cut at this popular size.
Color Recommendations
The Portuguese cut's extraordinary facet arrangement interacts with color differently than a standard round brilliant — its additional facets creating more complex light interactions that can make color both more and less visible depending on the stone's proportions. For white gold or platinum settings, D–F color grades deliver the purest, most colorless appearance that allows the Portuguese cut's extraordinary brilliance to shine without distraction. For yellow or rose gold settings, F color pairs beautifully and offers excellent value.
Clarity Sweet Spot
VS1–VS2 clarity is the sweet spot for a 1 carat Portuguese cut lab grown diamond — eye-clean to the naked eye while offering significant savings over Flawless grades. The Portuguese cut's brilliant facet pattern conceals inclusions exceptionally well — making VS2 an outstanding value choice for buyers seeking an eye-clean stone at the 1 carat size. Always view in high-resolution video before purchasing to verify eye-cleanliness.
Why Buy 1 Carat Portuguese Cut Lab Grown Diamonds from Variation?
At Variation, we specialize exclusively in lab grown diamonds — and our 1 carat Portuguese cut collection reflects our commitment to offering the rarest and most extraordinary cuts at exceptional value.
- IGI certified — every stone comes with a full IGI grading report
- 160+ facets — the most complex and brilliant facet arrangement available
- D, E and F color only — the highest color grades available
- VVS1 to VS2 clarity — all eye-clean, all exceptional quality
- Conflict-free & ethically sourced — always
- Priced up to 80% less than equivalent natural diamonds
Explore Other Sizes in Portuguese Cut Lab Grown Diamonds
Not sure about 1 carat? Explore our Portuguese cut lab grown diamonds in other carat weights — all IGI certified, conflict-free, and priced up to 80% less than natural diamonds.
Explore Other Shapes in 1 Carat Lab Grown Diamonds
Not sure about Portuguese cut? Explore our 1 carat lab grown diamonds in other shapes — each with its own unique character, brilliance, and appeal.
- 1 Carat Round Cut
- 1 Carat Oval Cut
- 1 Carat Cushion Cut
- 1 Carat Emerald Cut
- 1 Carat Princess Cut
- 1 Carat Pear Cut
- 1 Carat Radiant Cut
- 1 Carat Marquise Cut
- 1 Carat Heart Cut
- 1 Carat Ashoka Cut
- 1 Carat Trillion Cut
- 1 Carat Hexagon Cut
Frequently Asked Questions
How many facets does a 1 carat Portuguese cut diamond have?
A Portuguese cut diamond features over 160 precisely arranged facets — nearly triple the facet count of a standard round brilliant cut's 57–58 facets. This extraordinary facet arrangement is what gives the Portuguese cut its legendary fire, brilliance, and scintillation that is unmatched by any other diamond cut at 1 carat.
How big is a 1 carat Portuguese cut lab grown diamond?
A 1 carat Portuguese cut diamond measures approximately 6.5mm in diameter face-up — the same face-up size as a 1 carat round brilliant. While it does not deliver additional face-up size, it delivers an extraordinary additional depth and complexity of light performance that makes it appear more alive and more brilliant than any other 1 carat diamond available.
Is a 1 carat Portuguese cut lab grown diamond good for an engagement ring?
Yes — a 1 carat Portuguese cut engagement ring is the choice of those who demand the absolute pinnacle of diamond brilliance. Its extraordinary 160+ facet arrangement delivers a visual experience unlike anything else available at 1 carat — making it an unforgettable and deeply distinctive choice for the most important purchase of your life. At up to 80% less than a natural diamond of the same quality, a 1 carat IGI certified lab grown Portuguese cut offers extraordinary value.
What is the difference between a 1 carat Portuguese cut and round cut lab grown diamond?
Both are round diamonds of the same face-up size at 1 carat — approximately 6.5mm in diameter. The critical difference is in their facet arrangement and light performance. A round brilliant features 57–58 facets delivering exceptional brilliance — already the most brilliant standard cut available. A Portuguese cut features 160+ facets delivering an extraordinary additional depth and complexity of light that elevates brilliance to an entirely different level — making it the most brilliant diamond cut in existence.
What color grade should I choose for a 1 carat Portuguese cut lab grown diamond?
For white gold or platinum settings, D–F color grades are recommended for a 1 carat Portuguese cut diamond — allowing the extraordinary brilliance of the 160+ facet arrangement to shine without distraction. For yellow or rose gold settings, F color pairs beautifully and offers excellent value. All diamonds at Variation are available in D, E and F color grades.
Explore our full collection of 1 carat Portuguese cut lab grown diamonds above and find the stone that speaks to you. Questions? Our diamond experts are here to help.