176 Guides · 5 Categories
All Guides & Reviews
Every guide written by Farzana Hasan, GIA-certified diamond gemologist. Independent analysis. No sponsored content.
97 Guides
Round Cut Diamond
The complete round brilliant series — price audits, color grades, clarity grades, settings, and lab vs natural comparisons.
01Round Diamond Yellow Gold Engagement Ring: The Yellow Gold Color Hack 202602Round Diamond Rose Gold Engagement Ring: The Rose Gold Color Trap 202603Round Diamond Platinum vs White Gold Engagement Ring: The Platinum Premium Myth 202604Round Diamond H vs I Color: The I-Color Boundary 202605Round Diamond Engagement Ring Under $7000: The $7K Crossover 202606Round Diamond E vs F Color: The Near-Colorless Ceiling 202607Round Diamond D Color Guide: The True Colorless Test 202608Round Diamond Bezel Setting Engagement Ring: The Bezel Sparkle Tax 202609What Is a Round Brilliant Cut Diamond: The 57-Facet System 202610Round Diamond VVS1 vs VVS2 Clarity: The VVS Divide 202611Round Diamond vs Old European Cut: Modern Brilliant vs Vintage 202612Round Diamond Vintage Engagement Ring: The Vintage Setting Premium 202613Round Diamond Video Inspection: The Video Mandate 202614Round Diamond Right Hand Ring: The RHR Rule 202615Round Diamond Resale Value: The 50-Cent Dollar 202616Round Diamond Price Per Carat Chart: The Per-Carat Multiplier 202617Round Diamond Pavé Engagement Ring: The Pavé Upgrade Trap 202618Round Diamond Men's Ring Guide 202619Are Round Diamonds a Good Investment? The Honest Answer 202620Round Diamond Inclusion Types: Full Risk Guide 202621Round Diamond IF and FL Clarity: The FL Tax 202622How to Compare Round Diamonds Online: Step-by-Step 202623Round Diamond Fluorescence Guide: Save 5–15% 202624Round Diamond Face-Up Size Chart (MM) 202625Round Diamond Eye-Clean Guide: The Eye-Clean Audit 202626Round Diamond Certification Guide: The Certificate Inflation Scale 202627Round Diamond Cathedral Setting: Snag Risk Guide 202628Round Diamond Buying Checklist: 12-Point Audit 202629Round Diamond Anniversary Ring Guide 2026309 Carat Round Diamond Price: Only 7 Stones Exist on Blue Nile 202631Round Diamond 4-Prong vs 6-Prong Setting: The Definitive Guide 2026320.9 Carat vs 1 Carat Round Diamond: The $743 Face-Up Trick 202633How to Read a GIA Diamond Report: Full Field Guide 202634VVS vs VS2 Round Diamond: 2026 Clarity Comparison35Round Diamond VS1 vs VS2: The VS Split (2026)36Round Diamond vs Moissanite: Full 2026 Comparison37Best Round Diamond Under $5,000: 2026 Buying Guide38Best Round Diamond Under $10,000: 2026 Buying Guide39Round Diamond Three Stone Ring: The Complete 2026 Guide40Round Diamond Solitaire Ring: The Complete Guide41Round Diamond SI2 Clarity: Is It Eye-Clean in 2026? The Risk Assessment42Round Diamond Natural vs Lab Grown: The 2026 Buyer's Decision Guide43Round Diamond Length to Width Ratio: The Perfect Circle Rule44Round Diamond Halo vs Solitaire: Which Ring Should You Buy?45G vs H Color Round Diamond: 2026 Visual Test and Price Data46F vs G Color Round Diamond: 2026 Price Data47Round Diamond Engagement Ring Under $3,000: The Complete 2026 Guide48D Color vs G Color Round Diamond: 2026 Price Comparison492 Carat vs 3 Carat Round Diamond: 2026 Prices501 Carat vs 2 Carat Round Diamond: 2026 Price & Size Comparison51Best Round Cut Diamond Engagement Ring: The Complete 2026 Buyer's Guide528 Carat Round Diamond Price: 2026 Buying Guide537 Carat Round Diamond Price: 2026 Buying Guide546 Carat Round Diamond Price: 2026 Buying Guide553 Carat Diamond Engagement Ring: The Complete 2026 Buyer's Guide562 Carat Diamond Engagement Ring: The Complete 2026 Buyer's Guide571 Carat Diamond Engagement Ring: 2026 Guide58Round Diamond vs Radiant Cut: Which to Buy in 2026?59Round Diamond vs Princess Cut: Which Should You Buy? (2026)60Round Diamond vs Pear Shape in 2026: The Teardrop Compromise61Round Diamond vs Marquise Cut in 2026: Size, Price, and Trade-Offs62Round Diamond vs Heart Shape in 2026: Which Should You Buy?63Round Diamond vs Emerald Cut: Which to Buy in 2026?64Round Diamond vs Cushion Cut: Which Should You Buy in 2026?65Round Diamond vs Asscher Cut: Which to Buy in 2026?66Round Diamond Table Percentage Guide 2026 — The Flash Trap and Ideal Range67Round Diamond Symmetry in 2026: EX vs VG and The EX/VG/VG Rule68Round Diamond Size Chart: Every Carat Weight to Scale (2026)69Round Diamond SI1 Clarity — Is It Eye-Clean in 2026? The 70% Rule Explained70Round Diamond Polish in 2026: Does GIA Excellent Polish Actually Matter?71Round Diamond Pavilion Angle in 2026: The Return Gate Explained72Round Diamond Ideal Proportions: The Complete Guide (2026)73Round Diamond Girdle Thickness in 2026: The Invisible Weight Trap74GIA vs IGI for Round Diamonds in 2026 — Which Certificate Actually Matters?75Round Diamond Fluorescence: The Complete Buying Guide (2026)76Round Diamond Depth Percentage Guide 2026 — The Deep-Cut Trap and Ideal Range77Round Diamond Culet in 2026: Why No Culet or Pointed Wins Every Time78Round Diamond Crown Angle in 2026: The Scintillation Gate Explained79Round Diamond Color Guide: The Best Color Grade to Buy in 202680Round Diamond Clarity Guide: Which Grade is Eye-Clean in 2026?81How to Buy a Round Diamond in 2026: The 5-Step Checklist That Saves $3,000+82GIA Certified Round Diamond: Why the Certificate Matters and What to Look For835 Carat Round Diamond Price in 2026: Real Costs, Lab vs Natural Guide844 Carat Round Diamond Price Guide 2026 — The Statement Diamond Explained853 Carat Round Diamond Price Guide (2026): What You Actually Pay at Every Grade862 Carat Round Diamond Price: Complete Guide (2026)871.5 Carat Round Diamond Price Guide 2026 — The $8,500 Sweet Spot Explained88Round Diamond vs Oval Diamond: The 2026 Verdict Nobody Gives You89Best Round Diamond Engagement Ring Settings: The 2026 Guide90Lab Grown Round Diamond: The Complete 2026 Price & Buying Guide91Hearts and Arrows Diamond: Is the 2026 Premium Worth It?921 Carat Round Diamond Price: The Complete 2026 Buyer's Audit93Round Cut Diamond: The Complete Buying Guide (2026 Price Data + 57-Facet Truth)94Round Diamond Engagement Ring Under $2000 2026: The $2K Lab Leap95Round Diamond Engagement Ring Under $1000 2026: The $1K Lab Gate960.75 Carat Round Diamond Price Guide 2026: The Three-Quarter Compromise970.5 Carat Round Diamond Price Guide 2026: The Half-Carat Trap
45 Guides
princess-cut-diamond
01Princess Cut vs Round Diamond: The GIA Cut Tax and What You Actually Give Up (2026)02Princess Cut vs Radiant Cut Diamond: The Clarity Forgiveness Index and Why Radiant Allows SI1 When Princess Cannot (2026)03Princess Cut vs Pear Diamond: The Teardrop Trade and Why the Pointed Tip Changes Everything (2026)04Princess Cut vs Oval Diamond: The Elongation Premium and Why Oval Costs $3,508 More at the Same Carat (2026)05Princess Cut vs Emerald Cut Diamond: The Flash vs Flow Test and Why Clarity Rules Are Completely Different (2026)06Princess Cut vs Cushion Cut Diamond: The Sparkle Identity Test and Which Actually Costs Less (2026)07Princess Cut vs Asscher Cut Diamond: The Clarity Ceiling and Why Two Square Shapes Attract Completely Different Buyers (2026)08Princess Cut Diamond Size Chart: Face-Up mm Per Carat and The Phantom Carat Effect (2026)09Princess Cut Diamond SI1 Clarity: The Corner Migration Thesis and Why SI1 Is the Hard Stop (2026)10Princess Cut Diamond GIA Certified: The Ideal Cut Illusion and Why Certification Matters More Here (2026)11Princess Cut Diamond Fluorescence: The Chevron Fluorescence Effect and Why Blue Glow Works Differently (2026)12Princess Cut Diamond Face-Up Size Guide: The Square Footprint Test vs Round, Oval and Cushion (2026)13Princess Cut Diamond VS1 vs VS2: The Corner Clarity Divide and When VS2 Is a $324 Mistake (2026)14Princess Cut Diamond Length to Width Ratio: The Square Premium and What 1.05+ Really Looks Like (2026)15Princess Cut Yellow Gold Engagement Ring: The G-Color Floor Explained (2026)16Princess Cut White Gold Engagement Ring: Why White Metal Masks Color at the Corners (2026)17Princess Cut Three Stone Engagement Ring: Side Stone Sizing Rules for a Square Center (2026)18Princess Cut Rose Gold Engagement Ring: Why G Color Is Still the Minimum (2026)19Princess Cut Platinum Engagement Ring: Why Platinum V-Prongs Are the Safest Corner Combination (2026)20Princess Cut Pavé Engagement Ring: Does Pavé Actually Make a Princess Look Bigger? (2026)21Princess Cut Diamond Ring Under $10,000: The Luxury Tier Settings and How to Spend the Budget (2026)22Princess Cut Diamond Ideal Proportions 2026: Table 65-75%, Depth 64-75%, L:W 1.00-1.0223Princess Cut Diamond Cut Quality Guide 2026: The Ideal Cut Illusion and What to Actually Evaluate24Princess Cut Diamond Color Guide 2026: The Corner Color Trap and Exact Grade Thresholds25Princess Cut Diamond Clarity Guide 2026: The Corner Clarity Trap and Why VS1 Is the True Minimum26Princess Cut Cathedral Engagement Ring: Corner Snag Risk Doubled vs Round (2026)27Princess Cut Bezel Setting: The Only Alternative to V-Prong Corner Protection (2026)28How to Buy a Princess Cut Diamond in 2026: The Complete 7-Step Guide (All 6 Named Traps)29Best Princess Cut Diamond Engagement Ring: Farzana's 2026 Curated Picks from Blue Nile30Princess Cut Solitaire Engagement Ring: The Corner Chip Risk, V-Prong Rule & Best 2026 Picks31Princess Cut Halo Engagement Ring: The Round-Look Buyer Trap & What Actually Works (2026)32Princess Cut Diamond Under $5,000: 2026 GIA Options & Farzana's Picks33Princess Cut Diamond Under $3,000: 2026 GIA Picks & Farzana's Verdict34Princess Cut Diamond Under $2,000: 2026 Real Options & Farzana's Picks35Princess Cut Diamond Price Per Carat: 2026 Full Chart & Analysis36Princess Cut Diamond Engagement Ring: Every Setting, Every Metal, 2026 Master Guide373 Carat Princess Cut Diamond Price: 2026 GIA Data & Farzana's Verdict382 Carat Princess Cut Diamond Engagement Ring: GIA Prices, Best Settings & High-Value Guide (2026)391 Carat Princess Cut Diamond Engagement Ring: 27 GIA Picks, 12 Settings & Complete 2026 Guide402 Carat Princess Cut Diamond Price: 2026 GIA Data & Farzana's Verdict411 Carat Princess Cut Diamond Price: 2026 GIA Data & Farzana's Verdict421.5 Carat Princess Cut Diamond Price: 2026 Sweet Spot Guide430.75 Carat Princess Cut Diamond Price: 2026 Three-Quarter Carat Guide440.5 Carat Princess Cut Diamond Price: 2026 Half-Carat Guide45Princess Cut Diamond: The Complete Buying Guide, Prices & Honest Verdict (2026)
26 Guides
Diamond Buying Guides
Data-backed guides on the 4 Cs, certifications, and what to actually check before you buy.
01Heart Shape Diamond Guide: Cut, Price & The Cleft Symmetry Trap (2026)02Asscher Cut Diamond: The Complete Buying Guide (2026 Prices, Cut Quality & Clarity Rules)03Marquise Cut Diamond Buying Guide: Avoid the Bowtie Trap (2026)04Pear Cut Diamond: The Complete 2026 Buying Guide (Bow-Tie, Prices & L/W Ratios)05Radiant Cut Diamond: The Complete 2026 Buying Guide (70 Facets, Prices & Honest Verdict)06Oval Cut Diamond: The Complete 2026 Buying Guide (Bow-Tie, Prices & L/W Ratios)07Emerald Cut Diamond: The Complete 2026 Buying Guide (Hall-of-Mirrors, Prices & Clarity Rules)08Cushion Cut Diamond: The Complete 2026 Buying Guide (Crushed Ice vs. Chunky, Prices & Proportions)09Diamond Shapes Guide: All 10 Shapes Compared by Price, Brilliance, and Value (2026)10SI Clarity Diamond: The $1,140 Saving, the 70% Eye-Clean Rule, and the Full 2026 Audit Guide11VS2 Clarity Diamond: Is It Really Eye-Clean? The $610 Audit Rule (2026)12VS1 Clarity Diamonds: The $850 Sweet Spot Nobody Tells You About13VVS2 Diamond: Avoid the $1,800 "VVS2 Tax" (The VS1 Arbitrage Rule)14VVS1 Diamond Clarity: Avoid the $3,500 "VVS1 Tax" (The VS1 Arbitrage Rule)15IF and FL Diamond Clarity: Avoid the $4,500 "FL Tax" (The VS2 Solution)16H Color Diamond: Avoid the $7,500 VVS Trap (The $3,250 Market Floor)17G Color Diamond: Don't Pay 2025 Prices (The 14% Market Floor Solution)18F Color Diamond: Don't Pay the Colorless Premium (The G-Grade Solution)19E Color Diamond: Stop Overpaying for D-Grades (The 15% Arbitrage Hack)20D Color Diamond: Avoid the 30% Fake Purity Trap With the Type IIa Audit21Diamond Size Chart: Stop Buying Invisible Carats (Save 30% at 6.5mm)22Diamond Clarity Chart (2026): Beware "Clouds Not Shown"23Diamond Color Scale: Stop Paying the D-E-F Luxury Tax24Diamond Cut Guide: Why 55% of "Excellent" Stones Leak Light25Lab Grown vs Natural Diamond Price: The 2026 $0 Resale Trap26Master the Diamond 4Cs: Save 35% on Your Engagement Ring
7 Guides
Retailer Reviews
Independent audits of Blue Nile, James Allen, and other online diamond retailers.
01Blue Nile Lab Grown Diamond Rings Review: I Audited 500+ Stones So You Don't Waste $2,930–$21,54002Blue Nile Men's Chains Review: I Analyzed Every Chain So You Don't Waste $615–$40,00003Blue Nile Men's Bracelets Review: Every Style Analyzed With Live 2026 Prices04Blue Nile Men's Rings Review: I Analyzed 50+ Rings So You Don't Waste $800–$5,00005Blue Nile Earrings Review: Avoid the 2025 Price Trap (The $1,850 Market Floor)06Blue Nile Bracelets Review: The 5-Point Checklist Before You Checkout07Blue Nile Review 2026: Why Most Buyers Overpay (And How to Save Thousands)
1 Guide
Market Value & Price Trends
Real price data, resale trends, and live market analysis.