"Thank you very much Hadas. You are so amazing with big and great talent! You are the best teacher in the world. You find an easy way to give us interesting information about diamonds. I admire you. For me, you are a rock star in diamonds."
"I just completed my studies and it was the most amazing experience. Hadas has such a gift of presence in class. She kept all of us so motivated and was there for us every step of the way making sure we understood the lessons. The material we covered in class was quite thorough. I loved working with the diamonds and getting better and better at inspections as I became more educated. Coming to class was something I looked forward to because Hadas kept the pace moving and you feel like you’re part of a small family. Everyone in my class enjoyed each other’s company and there were plenty of laughs. I already miss everyone but will remember the experience fondly. I recommend this course to anyone who wants to learn the diamond business. Bravo, Hadas! You are one hell of a teacher! I’ll miss you. The Texas Lady."
"Yes, I would recommend C.G.S. to anyone who wants to learn about Diamond Grading. Hadas is a wonderful, warm-hearted, compassionate, kind, loving, caring, patient and FUN teacher... not only a teacher, she is my good friend and am proud to say it. The way she teaches, you cannot feel lost, she’s focused on every student she teaches. I have learnt a lot from her, more than that I cannot say, she has SUPER experience. My 6 weeks class went by so fast, why? Because, I had so much fun laughing and learning. Trust me, you have nothing to lose, take her class and see for yourself what a SWEETHEART she is. We were 10 students in her class and we all achieved our diplomas today and we gained a lot of knowledge like never before. I would recommend anyone that is really interested in studying Diamond Grading to take her class."
"This course is perfectly hand made by a wonderful team and an excellent teacher. Hadas is committed to transmit her knowledge to each ones that enters her classroom. Feel safe with this course, you will succeed knowing everything needed to start your career."
"This is the best course I could have ever taken. Hadas is professional, open, dedicated, fun and amazing! The class is not just about sitting around and getting board, listening to lectures or reading the book. It's all the contrary, it's about enjoying the lectures (because it's so interesting), enjoying practices and appreciate every single stone that you look through. It makes you concentrate and I could even add, relax. It makes you to want learn more and more. I enjoyed every single class and every moment. I could have not asked for more. And if you ever are interested in stones or want to discover a new world, I really highly recommend this course, because it prepares you for all what you need to know to be a gemologist."
"It was an amazing experience! The studies were informative, exciting and leading forward to a great combination of theoretical and practical study material. Thank you for all!"
"The best course ever! I have no regret to have done the course with Hadas. She is amazing and I have learnt so much and loved it so much. I totally recommend to do this course if you ever doubt of doing it. Thumbs Up!!!"
Laurie Tartour Choukroun
"It was my dream to study gemology in Israel. I know that Israel is the best in diamonds. So, my dream came true. I studied gemology in the Center of Gemological Studies C.G.S with Hadas Dori Bar Moshe. It was individual course in English, and I would like to say, that it was wonderful education! Very professional course, good gemological equipment. I had a lot of practice hours, during it I saw many diamonds in microscope and in loupe. I received full knowledge about diamonds grading. Education process was very comfortable and friendly. Hadas is a very professional teacher, always ready to help, answer any question. I met not only a very professional specialist, but my friend now! I studied with a great pleasure. I highly recommend C.G.S for studying gemology."
"The C.G.S. course founded by Eli Dori in 1979 and taught by his niece Hadas Dori-bar Moshe is one of the best courses I have come across. The classes vary in size but what is constant is the professional, caring and fun atmosphere in which one is engaged. From the first moment one walks into the class to the day one leaves proudly holding a Diamond Grader Certificate is an absolute pleasure. Every aspect of the course is explained clearly and thoroughly and each lesson devotes time to a lecture and practical application so that in a few short lessons you have the confidence to Diamond Grade and fill out a certificate with accuracy. If you are serious about a position in this industry or simply want to refresh ones skills, then there is no better place to be than with the C.G.S family. I will forever be an ambassador for them."
"I am using this medium to say a big thank you to Hadas and Eli Dori. Its been an awesome time studying Gemology and the beautiful art of Diamond Grading in your highly esteemed citadel of Learning (C.G.S). It's a period well spent, you guys are the best at teaching everything about Gemology and most especially Diamond Grading. I also want to thank my classmates Katherine Gorman and Amit Lipszyc, you guys rock. No teacher/student barrier, rather we had a synergy of a micro-community, to learn, speak and be listened to and share our experiences, which made us to excel in our training as Diamond Graders. Lectures are delivered in both English and Hebrew languages simultaneously, a Unique selling point for C.G.S. I highly recommend C.G.S, and I grade them Excellent because they represent the optimal 4C's of a Diamond."
"Absolutely I highly recommend C.G.S. to anyone who wants to learn about Diamond Grading. Hadas is the best ever teacher. She's one of a kind, beautiful from inside and outside and what makes us more motivated of this course because she's a good motivator + FUN teacher...The way she teaches us incredible. I'm telling you guys, you finished the course with so much knowledge. I have learnt a lot from her, from scratched to what I have now. It was unforgettable 6 weeks class and trust me it's all paid off, it's a good investment that I did. We were 8 students in her class and we all achieved our diplomas. Thanks so much Hadas, you are a STAR. Again, if you are interested in studying Diamond Grading you are in the right place."
"Ho frequentato il corso di Hadas in Ramat Gan e mi sono trovato benissimo! Hadas è una bravissima insegnante nonché persona! Il corso viene svolto in parte in ebraico e in parte in lingua Inglese ed è molto facile da comprendere! Do un voto di 10/10! Tutto è andato benissimo, sia al livello tecnico che al livello umano! Consiglio vivamente chi volesse frequentare il corso di Hadas dall’Italia in quanto mi sono trovato veramente bene! Leggevo solo recensioni positive e ho toccato con mano quanto letto! Grazie di tutto Hadas!"
"Je suis très reconnaissant du savoir que j'ai reçu au centre CGS, Hadass est sans doute la meilleure enseignante que j'ai eu la chance de croiser, en plus l'ambiance est très sympathique... Je recommande évidemment ! Merci encore."
Alexandre Yehuda Sebagh
"I also started my career in the diamond center as your student. I can say that you are the best teacher in the world. The saying: A good teacher is a teacher for life – is exactly about you. Beyond a vast professional knowledge and teaching skills that no other teacher I know has, the lessons with you are always pure fun, and every student finds his way to your heart. I highly recommend that you take this course."
"Beyond the smile and the great personality, Hadas is a professional gemologist. She allows you to understand the material in the best way. Personally,I don’t know many teachers that could teach me, as Hadas did. This is an elaborate course that is guided with a smile and taught in a wonderful atmosphere. I enjoyed every minute of it"
"The best teacher I know! No one teaches like you! Endless patience, high level of professionalism, I highly recommend!"
"A very interesting course, which is taught in a clear and understandable way. With Hadas you will always understand the material. She has a very warm and intimate attitude, which suits every student in a perfect way. No doubt, if you want to succeed in your first steps in diamonds, or you want to enrich your knowledge, this is the perfect course for you!"
"Bonjour, je m'appelle Alisa. Je viens de terminer la formation de juin avec Hadas. Cela a été une formidable expérience, autant techniquement, que humainement. Hadass est une extraordinaire professeur passionnée par son métier. Elle m'a tout enseigné en anglais alors, qu'elle enseignait simultanément aux autres élèves en hébreu. J'ai adoré venir chaque matin apprendre la partie théorique et pratique de l'étude du diamant dans une atmosphère très agréable. Je vous recommande vivement ce cours."
"Hadas is an amazing teacher. Whoever knows me, will say that I cannot sit down and study. With you, I successfully graduated the course with a lot of joy and fun. It's all thanks to you and your laugh, and your endless patience, which makes the course so wonderful!"
Hila Bar Lev Burstein
"Hadas is the best! She teaches the course in a fun, enjoyable and interesting way, with lots of humor and an ocean of patience. It was my privilege to study with her, and get to know such an extraordinary personality. I highly recommend the course!"
Anat Nagar Bachar
"Hadas is an amazing person and a pure soul, as well as an excellent and a fascinating teacher. I enjoyed every minute with her! I recommend that everyone should take her course!!!"
"Hadas helped me to enter the family business. During the course I received theoretical as well as practical knowledge, that gave me the tools and the confidence that everyone that deals with diamonds needs in this business. I highly recommend her course."
Avihay Ziv Cohen
"Thank you so much, Hadas, you are an amazing woman!!! It was so much fun to study with you, no doubt you are very professional and skilled in your area. Hadas is a very intelligent and interesting teacher. I enjoyed every minute with her."
"Hadas is the best!!! No. 1 in diamonds!!! Professional, funny and interesting. I warmly recommend!!!"
"It was a pleasure studying with Hadas, I will never forget you"
"Number 1 teacher. An amazing teacher, with a great personality. Beyond Gemology I learned so much from you. It was fun studying with you, you teach with so much knowledge and patience. I recommend everyone to study only with you."
"עשיתי את הקורס אצל הדס, ממליצה לכולם!!!"
"The best teacher ever"
"I studied with Hadas 20 years ago, for me she is the number 1 teacher!!!!"
"Hadas is the most professional, interesting, and full of life teacher that I have ever met. She invests everything in her students and is fully committed to them."
Nurit Pinto Choshen
"I had the privilege to meet an amazing women and a highly professional teacher!!! Thank you so much for everything."
"Thank you for your support and all you have done to make this study magical ! Every lesson was full of fun and you were always motivating me to never give up, as much as I always did in the past ! What a power you have got to make this happend ! You are so special and I loved every moment spent in your class ! Never ever met such a person ! Love ! you for your kind compliment I return them all to you."
"Such a great gemology course. We had fun lessons. Hadas, you are an amazing teacher and a wonderful person."
"Without a doubt it is one of the best courses available in the market for someone who is interested to learn more and become a diamond grader. So much personal attention is given to each student! You really feel that you are not just a number but you are treated as an individual. Everything is done to help you achieve your goal! I recommend it a thousand times!"
"I would definitely recommend this course to anyone working with diamonds, whether they are total novices like me, or people who already work in the industry and want to polish their skills and knowledge. The course is well structured and comprehensive. And, although the course is fast-paced, it is fun and easy to understand. The teachers are very supportive and they adapt to individual student's needs. All the students in my class had a great time!"