Everything You Need to Know About Diamonds
Whether you're buying your first diamond or comparing lab-grown vs. natural, this guide answers every question with clear, decisive answers. Lab-grown diamonds are real diamonds — chemically, physically, and optically identical to mined stones — and IGI certification is your guarantee of quality. Use this page as your complete diamond reference before you buy.
Quick Answers
| Are lab-grown diamonds real? | Yes — identical to natural diamonds in every measurable way. |
| Which certification is best for lab diamonds? | IGI — the industry standard for lab-grown diamond grading. |
| What is the best cut for sparkle? | Round brilliant — engineered with 58 facets for maximum light return. |
| What is the most important of the 4Cs? | Cut — it controls brilliance more than any other factor. |
| Do diamonds last forever? | Yes — rated 10/10 on the Mohs scale, they are effectively indestructible. |
| Do diamonds lose their sparkle? | No — surface oil buildup dulls them temporarily; cleaning restores full brilliance. |
| Are lab diamonds a good investment? | No — buy for beauty and value, not financial appreciation. |
| Do lab diamonds pass diamond testers? | Yes — they are real diamonds and pass all standard tests. |
| Is buying diamonds online safe? | Yes — when the retailer provides verifiable IGI or GIA certification. |
| Why are lab diamonds cheaper? | No mining required — lower supply chain cost, not lower quality. |
Cluster 1: Diamond Basics
Read the full Diamond Basics FAQ →
What is a diamond?
Direct Answer: A diamond is the hardest natural substance on Earth, formed from pure carbon atoms arranged in a crystal lattice structure. Both natural and lab-grown diamonds share this identical atomic structure.
Are lab-grown diamonds real?
Direct Answer: Yes — lab-grown diamonds are 100% real diamonds. They are chemically, physically, and optically identical to natural diamonds, differing only in their origin.
- Same carbon crystal structure, same hardness (Mohs 10), same refractive index
- Certified by IGI and GIA — the same labs that certify natural diamonds
- The FTC recognizes lab-grown diamonds as real diamonds
What is the difference between lab-grown and natural diamonds?
Direct Answer: The only difference is origin. Natural diamonds form underground over billions of years; lab-grown diamonds are created in a laboratory in weeks. Both are real diamonds with identical properties. Lab-grown diamonds cost 50–80% less.
Are lab diamonds fake or synthetic?
Direct Answer: No. "Synthetic" means man-made, not imitation. Lab diamonds are real diamonds in every measurable sense. The FTC recognizes lab-grown diamonds as real diamonds.
Cluster 2: Buying Decisions
Read the full Buying Decisions FAQ →
Are lab-grown diamonds worth it?
Direct Answer: Yes — lab-grown diamonds deliver identical beauty, hardness, and certification as natural diamonds at 50–80% lower cost. They are IGI-certified and ethically sourced.
Learn more in our diamond buying guide →
Should I buy lab-grown or natural diamonds?
Direct Answer: Choose lab-grown for value, size, and ethics. Choose natural for geological rarity and stronger resale value. Both are real diamonds.
What is more important: cut, color, clarity, or carat?
Direct Answer: Cut is the most important of the 4Cs. Priority order: Cut → Color → Clarity → Carat. Never sacrifice cut quality for carat weight.
What is the best diamond for an engagement ring?
Direct Answer: An Excellent-cut round brilliant or oval, G–H color, VS1–VS2 clarity. IGI-certified lab-grown diamonds maximize size and quality within budget.
See our complete engagement ring selection framework →
Cluster 3: Certification & Trust
Read the full Certification FAQ →
What is a diamond certificate?
Direct Answer: A diamond certificate is an official grading report from an independent lab (IGI, GIA, AGS) documenting cut, color, clarity, and carat weight. Never buy a diamond without one.
Which diamond certification is best?
Direct Answer: IGI is best for lab-grown diamonds. GIA is the gold standard for natural diamonds. Both are globally recognized and trusted.
How do you verify a diamond certificate?
Direct Answer: Enter the report number at igi.org or gia.edu. Every legitimate certificate has a unique report number laser-inscribed on the diamond's girdle.
Cluster 4: Durability & Longevity
Read the full Durability FAQ →
Do diamonds last forever?
Direct Answer: Yes — diamonds are rated 10/10 on the Mohs hardness scale and will not degrade, tarnish, or chemically deteriorate over time.
Can diamonds break or chip?
Direct Answer: Yes — diamonds can chip if struck sharply at the right angle. Hardness and toughness are different properties. Pointed cuts like princess and marquise are most vulnerable.
Do diamonds lose their sparkle?
Direct Answer: No — surface oil buildup dulls them temporarily. Cleaning with warm soapy water restores full brilliance.
Cluster 5: Value & Investment
Read the full Value & Investment FAQ →
Do diamonds hold their value?
Direct Answer: Natural diamonds retain 20–50% of retail value on resale. Lab-grown diamonds retain less. Neither is a reliable investment vehicle. Buy for beauty and meaning.
Are lab-grown diamonds a good investment?
Direct Answer: No — lab-grown diamond prices have dropped 50–80% over the past decade. Buy for beauty and value, not financial appreciation.
Why are lab diamonds cheaper?
Direct Answer: No mining is required. Lab diamonds are produced in weeks, eliminating the supply chain costs of natural diamonds. Lower price reflects origin, not quality.
Cluster 6: Authenticity & Safety
Read the full Authenticity & Safety FAQ →
How can you tell if a diamond is real?
Direct Answer: Verify its IGI or GIA certificate at igi.org or gia.edu. Additional methods: thermal conductivity test, fog test, professional loupe inspection.
Do lab diamonds pass diamond testers?
Direct Answer: Yes — lab-grown diamonds pass all standard diamond testers. They are real diamonds with the same thermal and electrical properties as natural diamonds.
Is buying diamonds online safe?
Direct Answer: Yes — when the retailer provides verifiable IGI or GIA certification, a clear return policy, and SSL-encrypted checkout. DEEVE provides IGI-certified diamonds with free shipping and a lifetime warranty.
Explore all diamond topics:
Diamond Basics → | Buying Decisions → | Certification & Trust → | Durability → | Value & Investment → | Authenticity & Safety → | Diamond Education Hub →