At Bright Day Star, transparency is our standard. A GRA (Global Gemological Research Academy) Grading Report is an impartial, technical document that serves as the definitive analysis of a Moissanite gemstone. We provide this official certification for every Moissanite gemstone in our store over 0.3 carats, giving you a permanent, verified record of your jewelry’s quality and authenticity.

​1. General Identification and Specifications

​Unique Report Number: The specific serial number assigned to the stone.

​Shape and Cutting Style: The geometry and facet arrangement of the stone (e.g., Round Brilliant, Cushion, Princess).

​Measurements: Precise dimensions of the stone to two decimal places (e.g., 6.51 - 6.55 x 4.02 mm).

​2. The 4Cs of Moissanite (Grading Results)

​Carat Weight: The precise weight and size of the stone. (Certified for all stones 0.3ct and larger).

​Cut Grade: A critical measure of how the stone's facets interact with light (Excellent, Very Good, Good).

​Color Grade: The absence of color, following the standard D-Z color scale (e.g., D for Colorless).

​Clarity Grade: The presence and placement of internal inclusions or surface blemishes (e.g., VVS1 for Very, Very Slightly Included).

​3. Additional Grading Characteristics

​Polish Grade: The smoothness of the stone’s surface.

​Symmetry Grade: The precision of the facet alignment and proportions.

​Fluorescence: A measure of the stone's light response to ultraviolet (UV) light.

​Fire: The dispersion of spectral colors (a signature trait of Moissanite).

​4. Technical Diagrams and Documentation

​Proportion Diagram: A detailed graphic showing the stone's facet angles, table percentage, and depth.

​Plotting Diagram: A diagram of the crown and pavilion with keys to any significant inclusions or blemishes.

​Date of Issue: The official date the stone was graded.

​QR Code: A scannable code linking to the official, digital verification of the report.

​5. Security Features

​Girdle Inscription: Confirmation that the unique report number is laser-inscribed directly onto the stone.

​Official Seals and Holograms: Security marks on the physical paper to prevent tampering.

​Why the Grading Entity Matters: Moissanite vs. Diamond

​It is important to understand that while Moissanite is graded using the same high 4C standards as diamonds, they are analyzed by different specialized entities.

​Diamonds (GIA & IGI): Traditional diamonds are typically graded by the GIA (Gemological Institute of America). These labs were built specifically to analyze the carbon structure of Earth-mined stones.

​Moissanite (GRA): Moissanite has a different refractive index and "fire" (dispersion) than a diamond. The GRA was established as the specialized global authority for lab-grown Moissanite.

​Why this matters for your purchase:

Because Moissanite is more brilliant than a diamond, it requires specialized technology calibrated to its unique optical properties. By using a Moissanite-specific grader like GRA for our stones 0.3 carats and larger, we ensure your Color, Clarity, Cut, and Carat Weight grades are 100% accurate for this specific mineral. This provides you with the same level of security and professional oversight for your jewelry that a GIA report provides for a diamond.