Blue Marquise Diamond

For those drawn to the cool blue hue of this marquise stone, we also offer the gem-like precision of a Blue Asscher Diamond or the smooth elegance of a Blue Oval Diamond for a different silhouette in matching color.

Product Overview

This is a loose lab-grown diamond with a marquise outline and a fancy blue color. As a loose stone, it is not set in any jewelry, making it suitable for those looking to select a center diamond before commissioning a custom setting or designing a ring. The marquise shape brings an elongated silhouette that can create a lengthening effect on the finger, while the blue color adds a cool, distinctive tone.

Because this is a fancy color lab-grown diamond, the visual character is shaped more by the blue color direction than by traditional white diamond grading priorities. The marquise shape and blue hue together produce a look that is both elegant and expressive, appealing to buyers who want their diamond to make a clear visual statement. As with any loose stone, final measurements, proportions, and documentation should be reviewed before purchase or setting.

Product Details

What These Details Mean

The marquise shape is defined by its elongated, pointed outline, often described as a faceted oval with tapered ends. This shape tends to produce a lengthening visual effect and can appear larger face-up than a round diamond of similar carat weight. The pointed ends are delicate and should be protected in a setting — typically with prongs or a bezel at each point. The marquise is a classic choice for buyers who prefer a shape with historical character and a distinctive outline.

The blue diamond color is produced through controlled laboratory processes. Blue lab-grown diamonds typically derive their color from boron exposure during crystal growth. The exact intensity can vary, and this attribute describes the color family rather than a specific saturation grade. For buyers interested in fancy color diamonds, the visual appeal is driven primarily by the color direction and how the stone appears under different lighting. The combination of an elongated marquise shape and a blue color creates a modern yet refined look that stands apart from traditional white diamonds.

Visual Selection Guidance

When selecting a loose fancy color marquise diamond, the two primary visual considerations are the shape proportions and the color appearance. The marquise outline can vary in length-to-width ratio, with some stones appearing more slender and others broader. The ideal proportion often depends on personal preference and the intended setting design. For a ring setting with a prong at each point, a moderately elongated ratio may help protect the tips and create a balanced look.

The blue color may appear differently depending on lighting conditions, including natural daylight, warm incandescent light, and mixed indoor lighting. Since this is a fancy color lab-grown diamond without a specific color saturation grade, buyers should request additional information about the color depth and evenness if these details are important to their decision. Confirming the exact measurements and overall proportions before ordering is recommended.

Style and Wearing Fit

As a loose diamond, this stone is intended to be set into a finished jewelry piece. The marquise shape is a popular choice for engagement ring center stones, pendants, and sometimes earrings. In a ring setting, the vertical orientation of the marquise shape creates a lengthening line that many find flattering on the hand. A central marquise can be set alone in a solitaire, flanked by smaller side stones, or framed by a halo for added visual density. The pointed tips should be securely set to protect them from daily wear.

For a pendant, a marquise diamond hung vertically produces a streamlined, graceful silhouette. For earrings, matching pairs of marquise stones can create a sophisticated drop or stud design. Because this is a single loose diamond described as a marquise, it is suited to buyers who want to design a piece around a specific shape and color combination.

Certification and Documentation

Product data does not specify whether a laboratory report is included with this diamond. For fancy color lab-grown diamonds, documentation from a recognized laboratory can provide useful details on color origin, color grade, clarity, measurements, and report number. Buyers should confirm whether a report is available and request grading details if documentation is required for their purchase or project. NUVU may support recognized lab reports or specific documentation depending on the diamond and project requirements.

Customization and Inquiry Options

Because this is a loose lab-grown diamond, buyers may inquire about specific documentation, measurements, matching stones, or setting compatibility. NUVU may support custom jewelry design, loose stone sourcing, private label programs, and OEM projects depending on the product type and inquiry requirements. For those planning to use this diamond in a completed jewelry piece, design consultation, metal selection, and production coordination can be discussed. Availability, matching options, and documentation should be confirmed at the time of inquiry.

Project Application

This loose marquise fancy blue diamond may be suitable for a range of jewelry applications, including engagement ring design, fine jewelry pieces, or custom project work. The marquise shape is sometimes used in three-stone, two-stone, or cluster arrangements, allowing the blue diamond to serve as either the focal point or part of a color-contrast layout. Buyers sourcing stones for branded jewelry collections, private label programs, or bespoke commissions should confirm size, color consistency, and documentation availability before proceeding.

Before Ordering

• Confirm the diamond measurements, carat weight, and color saturation if these details are important to your design or selection.
• Ask whether a laboratory report from a recognized service such as IGI, GIA, GCAL, or GSI is available for this stone.
• If the diamond will be set into a custom ring or jewelry piece, discuss setting design with your jeweler to ensure the pointed ends are adequately protected.
• For buyers sourcing multiple stones, confirm color consistency and matching availability before ordering.
• Check production, delivery, and return policies directly with your sales representative before purchase.

FAQ

What does the marquise shape look like on the finger?

The marquise shape has an elongated outline with pointed ends. When set vertically, it can create a lengthening effect along the finger. The exact appearance depends on the stone’s length-to-width ratio and the setting style chosen.

Is a blue fancy color lab-grown diamond always the same shade of blue?

No. Fancy blue diamonds can range from light blue to deeper grayish-blue tones. The attribute “Blue” indicates the color family, not a specific saturation level. Confirming the actual color depth with the seller is recommended.

Can this loose diamond be set into any ring setting?

The marquise shape requires a setting with secure protection at both pointed tips — usually a prong or bezel at each end. Not all setting types accommodate this shape easily. Confirming setting compatibility with your jeweler before ordering is advisable.

Understanding the nuances of fancy colored lab diamonds like the Blue Marquise requires careful consideration. Explore our complete buying guide to learn how to evaluate color, cut, and clarity with confidence before making your selection.