4Cs grading

Independent, evidence-based guides written entirely from the seller’s perspective.

How to Value a Diamond: The 4Cs and What They Mean for Sellers

March 28, 2026March 26, 2026 by Manuela Calandra

Close-up of a diamond with dramatic lighting and fog, showcasing clarity.

How to value a diamond starts with understanding the four specific measurements professional graders use to determine price. Most sellers have no idea what the 4Cs mean or how they create your final value. Key Takeaways: • Diamond resale values typically reach only 25-40% of original retail prices due to the 4Cs grading scale• Cut … Read more

Sell My Diamonds UK: The Complete Guide to Selling Diamonds

March 28, 2026March 26, 2026 by Manuela Calandra

Dazzling diamonds on reflective surface with dramatic lighting and fog.

Sell my diamond enquiries shock most UK sellers when they discover their £3,000 engagement ring is worth £300 to buyers. Diamond resale values are brutal, but understanding why helps you get the best possible return. Key Takeaways: Diamond resale values typically range from 10-30% of original retail price due to massive dealer markups Certified diamonds … Read more

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