OST
At OST, we are proud diamond manufacturers with a legacy rooted in excellence and craftsmanship. We specialize in natural diamonds, offering fancy shapes and rare, one-of-a-kind stones that are ethically sourced, cut, and polished entirely in-house. While we also craft fine jewelry, our true expertise lies in diamond manufacturing. Every diamond reflects our dedication to brilliance, quality, and responsible sourcing—backed by generations of experience. To ensure trust and transparency, we offer diamonds certified by globally recognized institutions such as the GIA (Gemological Institute of America) and IGI (International Gemological Institute), providing our clients with assurance of authenticity, grading accuracy, and value.
- user-c51174d74e6ePositiva•Hace 21 semanas
Excellent seller
- user-240371423ec4Positiva•Hace 22 semanas
Super blij mee. Lange weg afgelegd, maar de moeite waard. EXTREEM goed verpakt!!! Bedankt. En ook BEDANKT voor de extra"s verassingen....Heel Attent!
- user-c27427fa8e1ePositiva•Hace 30 semanas
Είναι πολύ σωστός πολίτης ότι λέει αυτό είναι Συνεργάζεται με πάρα πολύ καλή εταιρεία Αποστόλων και είναι σωστός επαγγελματίας τα συγχαρητήρια μου
- user-934daa1cece0Positiva•Hace 35 semanas
Excellent quality, fast shipping, very responsible seller, hope to have the opportunity to continue trading
- user-c4efcc2a8630Positiva•Hace 36 semanas
super
- teodor-ionPositiva•Hace 45 semanas
Excelent
- user-29ca3edb227dPositiva•Hace 46 semanas
Sehr guter Kontakt, gut verpacktr. Steine sind ok und hübsch. Habe in 2 Auktionen gekauft.
- user-6fee46e534dbPositiva•Hace 46 semanas
Everyrhing was OK. Trustable. Thank you soo much for your kind help!