It would be very surprising if kimberlites and lamproites can be found in Greece. You should study the conditions of diamondiferous kimberlite / lamproite generation. Nobody knows which mineral was described in the antuiqe descriptions.

DEAR BORIS

GOOD MORNING AND THANK YOU FOR YOUR REPLY. LAMPROITIC ROCKS LIKE PARA-LAMPROITES (SEE FOR EXAMPLE KAMVISIS AND PHANI 2024) AND LAMPROPHYRES (SEE KAMVISIS 2019) HAVE BEEN FOUND IN GREECE. ALSO, PLEASE READ THE PAPER ATTACHED IN THE QUESTION WHICH PROVES BEYOND DOUBT THAT THE ADAMAS OF THE ANCIENTS IS DIAMOND.

BEST REGARDS

IOANNIS

I believe No diamond-bearing rocks like kimberlites or lamproites have been found in Greece, and the geological setting is generally not favorable for such discoveries, as Greece lacks ancient cratonic regions, where diamonds typically form. The mention of diamonds in Pliny the Elder's writings about the gold mines of Ancient Philippi is intriguing but lacks solid evidence, and it is more likely that he was referring to another type of gemstone, such as quartz or sapphire, which were sometimes mistaken for diamonds in ancient times. While Philippi did have gold mining activities, there is no known occurrence of diamondiferous rocks in the area. The historical context and terminology might have contributed to the confusion in identifying the gemstones. To date, no credible geological studies confirm diamond findings in Greece.

DEAR SHAHAB

GOOD MORNING AND THANK YOU FOR YOUR DETAILED REPLY. PLEASE READ CAREFULLY THE WHOLE ARTICLE ATTACHED TO THIS QUESTION, IT WILL GIVE ANSWERS TO ALL OF THE POINTS THAT YOU RAISED. REGARDING RECENT DIAMOND FINDINGS IN GREECE, MPOSKOS & KOSTOPOULOS 2001 HAVE FOUND UHP MICRODIAMONDS IN THE GREEK RHODOPE MASSIF (SEE PHOTO ATTACHED). THE ARTICLE IS ONE OF THE MOST CITED DIAMOND-RELATED PETROLOGICAL ARTICLES (WITH 337 CITATIONS).

BEST REGARDS

IOANNIS