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-76e4d4b085cbPozitivă•Acum 2 săptămâni
Absolutelly great and trustful seller. Makes kind contact with you to make sure that everything about your shipment is going well and safely. I'm a happy buyer and definitely will order on OST again!
- user-76e4d4b085cbPozitivă•Acum 2 săptămâni
Absolutelly great and trustful seller! Makes kind contact with you to make sure that everything about your shipment is going well and safely. I'm a happy buyer and definitely will order again on OST!
- user-c51174d74e6ePozitivă•Acum 3 săptămâni
Excellent seller
- user-240371423ec4Pozitivă•Acum 4 săptămâni
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-c27427fa8e1ePozitivă•Acum 12 săptămâni
Είναι πολύ σωστός πολίτης ότι λέει αυτό είναι Συνεργάζεται με πάρα πολύ καλή εταιρεία Αποστόλων και είναι σωστός επαγγελματίας τα συγχαρητήρια μου
- user-934daa1cece0Pozitivă•Acum 17 săptămâni
Excellent quality, fast shipping, very responsible seller, hope to have the opportunity to continue trading
- user-c4efcc2a8630Pozitivă•Acum 18 săptămâni
super
- teodor-ionPozitivă•Acum 27 săptămâni
Excelent
- user-29ca3edb227dPozitivă•Acum 28 săptămâni
Sehr guter Kontakt, gut verpacktr. Steine sind ok und hübsch. Habe in 2 Auktionen gekauft.
- user-6fee46e534dbPozitivă•Acum 29 săptămâni
Everyrhing was OK. Trustable. Thank you soo much for your kind help!