Grading diamond-studded jewelry in a Naturalmark Lab Pvt. Ltd. involves assessing several factors to determine the color & clarity quality of the diamonds and the metal setting. Here’s a step-by-step guide to grading such jewelry:

1. Preparation and Cleaning Cleaning: Use ultrasonic cleaners or steam cleaners to remove dirt and oils. Inspection: Check for any loose stones or damage to the setting.
2. Diamond Authentication We use gemological tools like a screening machine, refractometer and spectroscope to confirm diamond authenticity and identify potential simulants or synthetic stones. If any piece is found apart from natural diamonds, it will be marked red by a marker pen & returned to replace it with natural diamond. If any piece is found natural treated/drilled/HPHT diamond, it will be marked black by a marker pen & returned to replace it with natural diamond.
3. Initial Inspection Visual Assessment: Use a loupe (10x magnification) or microscope to examine the jewelry. Documentation: Cross check the details submitted
4. Diamond Grading (4Cs) Gross Weight: Weigh the entire piece first. Carat Weight : If there is any doubt on diamond's carat weight mentioned on requisition slip, Gemologist measure individual stones if possible or estimate weight based on dimensions. Color Grading: Use a white background and controlled lighting. Compare with studded master stones to determine the diamond color grade Clarity Grading: Examine under 10x magnification for inclusions and blemishes. Cut Grading: Evaluate the diamond’s proportions, symmetry, and polish. Assess how well the diamond reflects light (brilliance and fire).Milky stones or weak brilliance diamonds affects clarity grade. Though, Naturalmatk Lab doesn't mention Cut grade in a report. Metal Grading
   • Metal Purity : Hallmarks and Stamps: Check for manufacturer marks and metal quality stamps.
5. Setting and Craftsmanship Evaluation : Inspect how securely and evenly the stones are set. Evaluate craftsmanship quality and symmetry in design.
6. Certification and Documentation :
   • Prepare a mini grading report including diamond characteristics, metal quality if Hallmarked, and a nicely clicked photograph and any relevant remarks.
7. Quality Assurance and Final Inspection : Double-check all data and observations. Ensure consistency with laboratory standards and procedures.