The best in gemstones and diamonds brought to you by Ghene Menezes
“Every gemstone holds secrets — you just need to know how to read them.”
Ghene began his journey to becoming a gemology expert with a fascination for black diamonds and their possible extraterrestrial origins, which he discovered while pursuing a Master’s degree in Geology. That curiosity led to a career with the Gemological Institute of America (GIA), where he spent 8 years working as a Diamond Grader and later as an Instructor, teaching gemology across India. With strong expertise in diamonds and hands-on experience in gemstone identification and origin analysis, they bring a rigorous scientific approach to every lot. At Catawiki, he is known for his attention to detail, careful report analysis, and buyer-focused mindset, combining academic depth with a genuine passion for sharing knowledge and integrity in the gem trade.
Ghene began his journey to becoming a gemology expert with a fascination for black diamonds and their possible extraterrestrial origins, which he discovered while pursuing a Master’s degree in Geology. That curiosity led to a career with the Gemological Institute of America (GIA), where he spent 8 years working as a Diamond Grader and later as an Instructor, teaching gemology across India. With strong expertise in diamonds and hands-on experience in gemstone identification and origin analysis, they bring a rigorous scientific approach to every lot. At Catawiki, he is known for his attention to detail, careful report analysis, and buyer-focused mindset, combining academic depth with a genuine passion for sharing knowledge and integrity in the gem trade.
- Master’s degree in Geology; multiple GIA certifications
- 8 years’ experience at the Gemological Institute of America
- Specialist in diamonds, grading, and gem identification
Ghene began his journey to becoming a gemology expert with a fascination for black diamonds and their possible extraterrestrial origins, which he discovered while pursuing a Master’s degree in Geology. That curiosity led to a career with the Gemological Institute of America (GIA), where he spent 8 years working as a Diamond Grader and later as an Instructor, teaching gemology across India. With strong expertise in diamonds and hands-on experience in gemstone identification and origin analysis, they bring a rigorous scientific approach to every lot. At Catawiki, he is known for his attention to detail, careful report analysis, and buyer-focused mindset, combining academic depth with a genuine passion for sharing knowledge and integrity in the gem trade.
Ghene began his journey to becoming a gemology expert with a fascination for black diamonds and their possible extraterrestrial origins, which he discovered while pursuing a Master’s degree in Geology. That curiosity led to a career with the Gemological Institute of America (GIA), where he spent 8 years working as a Diamond Grader and later as an Instructor, teaching gemology across India. With strong expertise in diamonds and hands-on experience in gemstone identification and origin analysis, they bring a rigorous scientific approach to every lot. At Catawiki, he is known for his attention to detail, careful report analysis, and buyer-focused mindset, combining academic depth with a genuine passion for sharing knowledge and integrity in the gem trade.