The marquise-cut 1 carat diamond is prized for its elongated silhouette, which can maximize perceived carat weight and create a dramatic, elegant look. This guide highlights five 1 ct marquise lab-grown or certified options, balancing color, clarity, and value for American shoppers. Each entry provides a quick overview and practical buying considerations to help you choose a piece for rings, pendants, or earrings that suits your design goals and budget.
| Product | Brand | Carat / Color / Clarity | Notes |
|---|---|---|---|
| IGI Certified Lab Grown Loose Diamond, Marquise Cut, 1 Ct TW | THE REAL DEAL FOR YOU | F-G / VVS-VS | HPHT/CVD grown; strong value |
| IGI Certified Lab Grown Loose Diamond, Marquise Cut, 1 Ct TW | THE REAL DEAL FOR YOU | D-E / VVS-VS | Near-colorless option with high clarity |
| GIA Certified Lab Grown Loose Diamond, Marquise Cut, 1 Ct TW | THE REAL DEAL FOR YOU | D-E / VVS-VS | GIA-grade certification for trusted provenance |
| Fascinating Diamonds IGI Certified 1 Carat Loose Marquise Cut | Fascinating Diamonds | D-E / VVS-VS | IGI certified; modern lab-grown sparkle |
| IGI Certification 1/2 to 2 Carat Loose Lab Grown Diamond | Roy Rose Jewelry | 1 Ct (typical); E-F / VVS-VS | Marquise variants; broad size options |
IGI Lab Grown 1 Ct TW Marquise – F-G Color
Item Details: IGI Certified Precision cut loose Lab Grown Diamond in F-G color with VVS-VS clarity. Lab-grown diamonds typically fall within a ±6% range in color and clarity grading. Designed for a flawless ring, earrings, pendant, or bracelet, suitable for weddings, engagements, anniversaries, or special occasions. These diamonds are more affordable than mined stones, with a smaller environmental footprint, and are chemically and physically identical to mined diamonds, created via HPHT or CVD methods.
IGI Lab Grown 1 Ct TW Marquise – D-E Color
Item Details: IGI Certified lab-grown diamond with VVS-VS clarity. Offers a near-colorless appearance with strong brilliance. Affordability relative to mined diamonds, lower environmental impact, and 100% real diamond properties. Created in laboratories using HPHT or CVD methods, ensuring ethical and sustainable sourcing for jewelry making.
GIA Certified 1 Ct TW Marquise – D-E
Item Details: GIA certification paired with VVS-VS clarity. The GIA report provides robust third-party verification of cut, color, and carat. Lab-grown diamonds offer cost efficiency and a smaller carbon footprint while remaining 100% real diamonds formed through HPHT or CVD methods.
Fascinating Diamonds 1 Carat Marquise – IGI Certified
Item Details: IGI-certified brilliance with D-E color and VVS-VS clarity. Lab-grown diamonds offer eco-conscious, conflict-free sourcing with identical chemical and physical properties to mined diamonds. Ideal for designers seeking a high-quality, sustainable option for fine jewelry pieces.
Roy Rose Jewelry – 1 Ct Marquise Lab Grown
Item Details: IGI-certified lab-grown diamond options from 0.50 to 2.00 ct with marquise shapes, color ranges E-F, and high clarity (VVS-VS). Each stone comes with a laser-inscribed girdle and an independent gemological report (GIA or IGI), providing documented verification of cut, color, and carat. Useful for designers seeking certified authenticity and peace of mind for jewelry projects.
Buying Guide: Key Considerations For 1 Ct Marquise Diamonds
Shape and silhouette: The marquise cut creates an elongated look that can maximize perceived carat weight. Consider a longer length-to-width ratio to achieve your desired appearance and finger geometry for rings.
Carat, color, and clarity balance: For a 1 carat marquise, prioritize color (D-E or F-G) and clarity (VVS-VS) if you want strong brilliance with minimal visible inclusions. If budget is a constraint, you may accept slightly lower color or clarity while maintaining overall sparkle.
Certification: GIA and IGI certifications are common for lab-grown and natural diamonds. A reputable lab report confirms cut, color, clarity, and carat. For added assurance, laser inscriptions and independent reports (GIA or IGI) provide traceability.
Lab-grown vs mined: Lab-grown diamonds offer cost savings, lower environmental impact, and a virtually identical diamond in chemistry and optics. Mined diamonds bring natural provenance and may have different market perceptions depending on consumer values.
Cut quality: A well-cut marquise will maximize brilliance and light return. Look for a balanced crown height and pavilion depth to avoid bow-tie effects and ensure even sparkle across the stone.
Setting considerations: Marquise stones require settings that protect the pointed ends. V-prong or bezel settings can help prevent chipping while showcasing the elongated shape. Ensure compatibility with the mounting style and ring size.
Budget and value: Compare similar carat ranges, colors, and certs across multiple sellers to identify the best value. Factor in potential customization costs if you plan to create a bespoke piece.
Ethical sourcing: Prefer diamonds with clear certification and transparent sourcing policies. Lab-grown options generally have smaller environmental footprints and conflict-free provenance.