GRA Certified Loose Moissanite Round White Stone 5-10mm
Purchase high-quality loose moissanite round stones with included GRA certificate. Available in sizes 5mm, 6mm, and 10mm — color grades D, E, F, G. Brilliant white sparkle, excellent clarity, perfect for custom jewelry making, engagement rings, or replacing lost stones.
GEMMASTER Good Quality Moissanite Round Loose Stone – D E F G Color with GRA Certificate 5mm 6mm 10mm
Create stunning fine jewelry with the GEMMASTER Moissanite Round Loose Stone. These high-quality moissanite gems feature D, E, F, or G color grades with VVS clarity and 3EX (excellent) cut for maximum brilliance and fire. Each stone comes with a GRA certificate verifying authenticity and quality. Available in 5mm, 6mm, and 10mm sizes, these loose moissanite stones are perfect for custom engagement rings, wedding bands, earrings, pendants, or any jewelry-making project. With the brilliance of diamonds at a fraction of the cost, moissanite is the ethical, eco-friendly choice for discerning jewelry designers and collectors.
- GRA certificate included – authentic moissanite guaranteed
- D, E, F, G color grades – near-colorless to colorless
- VVS clarity – very, very slightly included, eye-clean
- 3EX cut – excellent polish, symmetry, and proportions
- Available sizes: 5mm, 6mm, 10mm round brilliant cut
- Premium Moissanite with GRA Certificate: Each moissanite stone comes with a GRA (Gemological Research Association) certificate, verifying its authenticity, carat weight, color grade, clarity, and cut quality. This independent certification provides confidence in your purchase and serves as documentation for insurance or resale purposes.
- D, E, F, G Color Grades: These moissanite stones are available in near-colorless to colorless grades (D, E, F, G) – the highest quality range. D color is completely colorless and the most rare. E and F are also colorless with no visible tint. G color appears colorless to the naked eye but offers exceptional value.
- VVS Clarity with 3EX Cut: VVS (Very, Very Slightly Included) clarity means inclusions are extremely difficult to see even under 10x magnification – the stones are eye-clean. The 3EX cut rating (Excellent polish, Excellent symmetry, Excellent proportions) ensures maximum light return, brilliance, and fire.
- Round Brilliant Cut for Maximum Sparkle: The classic round brilliant cut features 57 or 58 facets designed to maximize light return and dispersion. This timeless cut offers the most sparkle and fire of any diamond or moissanite shape, making it the most popular choice for engagement rings and fine jewelry.
- Available in 5mm, 6mm, and 10mm Sizes: Choose the perfect size for your project – 5mm (approximately 0.75-0.85 carat equivalent), 6mm (approximately 0.9-1.0 carat equivalent), or 10mm (approximately 3.5-4.0 carat equivalent). Perfect for solitaire rings, halo settings, earrings, pendants, or three-stone designs.
- Custom Engagement Rings: Perfect for creating a unique, personalized engagement ring. The 5-6mm stones are ideal for solitaire settings, while the 10mm stone makes a bold statement. Moissanite offers diamond-like brilliance at a fraction of the cost, allowing larger stones within budget.
- Wedding Bands and Anniversary Jewelry: Use these loose stones to create custom wedding bands, anniversary rings, or eternity bands. The durable moissanite (9.25 Mohs hardness) stands up to daily wear and will maintain its brilliance for generations.
- Earrings and Pendants: The 5-6mm stones are perfect for stud earrings, drop earrings, or solitaire pendants. Buy two matching stones for earrings. The round brilliant cut offers maximum sparkle in any lighting condition.
- Jewelry Making and Repair: Ideal for jewelry designers, metalsmiths, or hobbyists creating custom pieces. Also great for replacing lost or damaged stones in existing jewelry. The GRA certificate adds value for resale.
- Investment and Collecting: Moissanite is a lab-created gemstone that offers consistent quality and ethical sourcing. The GRA certificate documents your stone’s specifications, making it suitable for collection or as an investment-grade gemstone.
- Setting the Stone: These loose moissanite stones are designed for professional jewelry setting. For best results, have the stone set by an experienced jeweler. Common settings include prong, bezel, halo, or tension settings. The round brilliant cut works with virtually any setting type.
- Stone Measurement: Verify the exact size of your stone before ordering a setting. 5mm = approximately 0.75-0.85 carat equivalent, 6mm = approximately 0.9-1.0 carat equivalent, 10mm = approximately 3.5-4.0 carat equivalent. Allow 0.1-0.2mm tolerance for setting fit.
- Handling Precautions: Handle moissanite stones with care. Use tweezers with coated tips to prevent scratching. Avoid dropping the stone – while moissanite is durable (9.25 Mohs), it can chip if struck against hard surfaces at the wrong angle.
- Cleaning Before Setting: Clean the stone with warm water, mild soap, and a soft brush before setting to remove any manufacturing residue. Rinse thoroughly and dry with a lint-free cloth. Avoid ultrasonic cleaners before setting, as vibration could damage loose stones.
- Storage: Store loose moissanite stones in individual soft pouches or compartmented gemstone boxes. Do not store multiple stones together, as they can scratch each other. Keep the GRA certificate with the stone for documentation.
Product Specifications
| Brand Name | GEMMASTER |
| Product Name | Good Quality Moissanite Round Loose Stone |
| Stone Type | Lab-Created Moissanite |
| Cut | Round Brilliant Cut – 3EX (Excellent polish, symmetry, proportions) |
| Color Grades Available | D, E, F, G (near-colorless to colorless) |
| Clarity Grade | VVS (Very, Very Slightly Included) – eye-clean |
| Available Sizes | 5mm, 6mm, 10mm |
| Approximate Carat Equivalent | 5mm ≈ 0.75-0.85ct, 6mm ≈ 0.9-1.0ct, 10mm ≈ 3.5-4.0ct |
| Mohs Hardness | 9.25 (second hardest gemstone after diamond) |
| Certificate | GRA Certificate (included) |
| Certificate Type | Third Party Appraisal – GRA |
| Main Stone | Moissanite |
| Fine or Fashion | Fine |
| Item Type | Loose Beads / Loose Gemstones |
| Item Weight | Varies by size (0.1-1 carat equivalent) |
| High-concerned Chemical | None |
| Origin | Mainland China |
Packing List
– GRA certificate of authenticity
– Protective gemstone case or soft pouch
– Stone specifications card (color, clarity, cut grade)
Note: Setting not included. Stone only. Multiple stones available – contact seller for bulk pricing.
Warnings and Safety Notes
Choking Hazard: Small parts – loose stones pose serious choking risk. Not suitable for children under 3 years. Keep out of reach of infants, toddlers, and pets. Store securely.
Not a Toy: These are genuine gemstones for jewelry making, not play items. Do not give to children as toys.
Moissanite vs Diamond: Moissanite is a lab-created gemstone with different optical properties than diamond. While moissanite has more fire (rainbow flashes) than diamond, some individuals may prefer the look of diamond. Moissanite is an ethical, affordable alternative.
GRA Certificate Limitations: The GRA certificate verifies that the stone is moissanite and documents its specifications. However, GRA is not as widely recognized as GIA for diamonds. For high-value insurance purposes, additional appraisal may be recommended.
Setting Caution: Moissanite is very hard (9.25 Mohs) but can still chip if struck at the wrong angle. Use a qualified jeweler for setting. Do not attempt to set the stone yourself without proper training and tools.
Cleaning Instructions: Clean moissanite with warm water, mild soap, and a soft brush. Rinse thoroughly and dry with a lint-free cloth. Ultrasonic cleaners are generally safe for moissanite but may not be safe for the setting. Avoid steam cleaners.
Storage: Store loose stones in individual soft pouches or compartmented boxes. Do not store multiple stones together, as they can scratch each other. Moissanite can scratch other gemstones (except diamond and corundum).
Heat Sensitivity: Moissanite can withstand high temperatures from jewelry repair torches, but rapid temperature changes may cause damage. Inform your jeweler that the stone is moissanite before any repair work.
Inspection Before Use: Before setting, inspect the stone for any visible chips, cracks, or inclusions. If any defects are found, contact the seller before attempting to set the stone.
Not for Industrial Use: These gemstones are for jewelry applications only. Not suitable for industrial, cutting, or abrasive applications.
Returns and Claims: Keep the GRA certificate and original packaging for any return or warranty claims. The certificate is required to verify the stone’s authenticity.
Product Video Demo:
Video demonstration unavailable. Please contact seller for video content.
