IGI-Certified vs GIA-Certified Diamonds: What You Should Know 💎

📝 What Is a Diamond Certification?
A diamond certification (also called a grading report) is an independent document that details the diamond’s most important characteristics:
- Carat, Cut, Colour, Clarity (the “4Cs”)
- Analyses of symmetry, polish, fluorescence, and shape
-
Laser-inscribed ID number on the ‘girdle’ of the diamond for traceability
These certificates provide reliable, unbiased evidence of a diamond’s quality and origin which critical for both your confidence and insurance requirements.
💼 GIA: The Traditional Gold Standard
GIA (Gemological Institute of America)
GIA has been setting the benchmark since 1931. Known for its consistency and strict grading process, GIA is often the go-to for natural diamonds.
- Highly consistent and strict, the scores demand precision
- Uses anonymous grading, cross-checks by multiple gemologists.
- Laser inscription ensures the diamond matches the certificate every time.
-
Recognised worldwide and favours resale value
Ideal for mined diamonds but lenient with lab-grown, and the process takes longer and commands a higher fee.
🔬 IGI: A Leader in Lab-Grown Diamond Certification
IGI (International Gemological Institute)
Founded in 1975, IGI is one of the world’s most prominent labs for grading lab-grown diamonds and a trusted partner of MJS.
Why we love IGI:
- They were one of the first to offer lab-grown diamond reports
- Their reports include all 4Cs, shape, polish, and more
- Faster turnaround time
- Cost-effective for both clients and jewellers
- Offers full and mini reports plus appraisals
Some in the industry note IGI can be slightly more lenient on grade assignments but remains consistent and transparent.
⚖️ Quick Look: IGI vs. GIA
Feature |
GIA |
IGI |
Established |
1931 |
1975 |
Best for |
Mined diamonds |
Lab-grown diamonds |
Grading strictness |
Most rigorous |
Slightly more lenient |
Turnaround time |
Slower |
Faster |
Pricing |
Higher |
More affordable |
Lab-grown grading |
Less-focused historically |
Industry leader, includes appraisal |
💡 Why IGI Matters at My Jewellery Shop
Every lab-grown and mined diamond we carry at My Jewellery Shop comes with IGI certification. Here’s why that’s important:
🔍 Verified Transparency
Each diamond is laser-inscribed with an ID number that links directly to its IGI certificate, your assurance that it’s exactly what we say it is.
💰 Fair Pricing
Because IGI offers a streamlined, efficient grading process, we’re able to provide beautiful, certified diamonds at prices that offer incredible value.
⏱️ Faster Turnaround
No waiting around for weeks. IGI’s quicker process means your ring or jewellery piece is ready sooner, just in time for life’s special moments.
🌍 Trusted Worldwide
IGI is recognised across the industry for their consistent lab-grown diamond grading and modern approach. When you see an IGI certificate, you know it’s the real deal.
💬 Expert Tip from the MJS Team
Don’t choose a diamond just for the certificate. Look at the quality of the stone itself, how it sparkles, how it performs, and how it makes you feel.
A beautiful diamond, IGI or GIA certified, should still be chosen with your heart (and a little help from our gem experts).
💖 Shop with Confidence at MJS
At My Jewellery Shop, we’re all about transparency, value, and exceptional service.
Here’s what you can expect:
- IGI-certified lab-grown diamonds
- Transparent, fair pricing
- Honest guidance from gem-certified experts
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Beautiful, high-quality jewellery designed to last a lifetime
✨ We believe that luxury should come with honesty and trust. Let us show you the brilliance of lab-grown diamonds, IGI-certified and client-approved. Browse our collection today and discover dazzling beauty that’s heart-led, and mind-smart.
🔗 Explore our IGI-certified lab-grown collection
📅 Book a personalised consultation