Cullinan Heritage A Rare Diamond and A Rare Sale

Close up of a man holding up a rare 507.55 carat diamond

A rare 507.55 carat diamond, of exclusive color and clarity, was discovered in South Africa.

What would you do if you had $35.3 million just sitting around, waiting for the perfect opportunity? Would you spend it on a rare, magnificent diamond? Last September, London-based Petra Diamonds Company unearthed a 507.55-carat rough diamond at its Cullinan mine in South Africa, dubbed the "Cullinan Heritage".

Today, the diamond was sold to the Hong Kong-based Chow Tai Fook Jewellery Company Ltd. at a tender in South Africa for $35.3 million—the **highest sale price ever achieved for a rough diamond**.

Why such a high price? This reflects the incredible rarity of the diamond in terms of size, color, and clarity.

A few statistics: At 507.55 carats, the Cullinan Heritage is among the world's **20 largest high-quality rough diamonds ever unearthed**. It is one of many h

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About the Author

About the Author

Lucy Zimmerman

Lucy Zimmerman is a fourth-generation jeweler who grew up watching her parents, Roman and Sophie Shor, build Roman Jewelers from the ground up. Inspired by her father's craftsmanship and passion for serving customers, she discovered her own love for the business while working weekends and holidays during college.

After graduating from Lafayette College with a degree in Psychology, Lucy joined the family business, learning firsthand under her father, Roman. She later managed Roman Jewelers' former mall location before helping open and lead the company's current flagship showroom.

Today, Lucy leads Roman Jewelers into its next chapter, carrying forward a family legacy of craftsmanship, integrity, exceptional service, community involvement, and charitable giving while embracing a modern vision for luxury retail. Guided by the family values on which the company was built, Lucy is shaping the future of Roman Jewelers through innovation, elevated experiences, and a continued commitment to personalized service, while giving back to the community, and preserving the legacy that has defined Roman Jewelers for generations.