| USA DIAMOND COATING LIMITED | Private company limited by shares | Live |
| DIAMOND COIN LIMITED | Private company limited by shares | Dissolved |
| DIAMOND COLLECTION LIMITED | Private company limited by shares | Live |
| R. COLLECTION DIAMOND LIMITED | Private company limited by shares | Live |
| SHIN'S DIAMOND COLLECTION COMPANY LIMITED | Private company limited by shares | Live |
| FIRST CONCEPT DIAMOND LIMITED | Private company limited by shares | Live |
| CONCORD DIAMOND LIMITED | Private company limited by shares | Live |
| CONTI DIAMOND LIMITED | Private company limited by shares | Live |
| COOL DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND COOPERATION LIMITED | Private company limited by shares | Dissolved |
| DIAMOND CORONET LIMITED | Private company limited by shares | Live |
| JM DIAMOND CORP. LIMITED | Private company limited by shares | Live |
| DIAMOND CREATION LIMITED | Private company limited by shares | Live |
| CREATIVE DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond Creative Company Limited | Private company limited by shares | Live |
| DIAMOND CREEK INVESTMENTS LIMITED | Private company limited by shares | Live |
| DIAMOND CREST LIMITED | Private company limited by shares | Dissolved |
| DIAMOND CROWN LIMITED | Private company limited by shares | Dissolved |
| DIAMOND CROWN LIMITED | Private company limited by shares | Live |
| CROWN DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND CROWN INVESTMENT LIMITED | Private company limited by shares | Live |
| DIAMOND CROWN RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| DIAMOND CROWN TRADE LIMITED | Private company limited by shares | Live |
| CYGNI LAB DIAMOND LIMITED | | Live |
| DAERMANS DIAMOND (HONG KONG) LIMITED | Private company limited by shares | Live |
| DAIICHI DIAMOND JEWELLERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DEALERS HK LIMITED | Private company limited by shares | Live |
| DEEP DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| DEESAN DIAMOND LIMITED | Private company limited by shares | Live |
| DELUXE DIAMOND LIMITED | | Live |
| DIAMOND DESIGN LIMITED | Private company limited by shares | Live |
| K DIAMOND DESIGN COMPANY LIMITED | Private company limited by shares | Live |
| GOLD & DIAMOND JEWELLERY DESIGN LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DESIGN JEWELRY CO. LIMITED | Private company limited by shares | Live |
| DIAMOND VIEW DESIGN COMPANY LIMITED | Private company limited by shares | Live |
| Devanshi Diamond HK Limited | Private company limited by shares | Dissolved |
| DIAMOND SUCCESS DEVELOP LIMITED | Private company limited by shares | Live |
| Diamond Developing Limited | Private company limited by shares | Live |
| DIAMOND SKY DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| Difeee Diamond Company Limited | Private company limited by shares | Live |
| DIAMOND DIGITAL LIMITED | Private company limited by shares | Live |
| Digital Diamond Limited | Private company limited by shares | Live |
| DIMINCO JINGHUA DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| DINK DIAMOND LIMITED | Private company limited by shares | Live |
| LEO DIAMOND DISTRIBUTORS LIMITED | Private company limited by shares | Live |
| DIAMOND DOOR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| DORSETT DIAMOND LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DOVE COMPANY LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DE DRAGON LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DRAGON LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DRAGON LIMITED | Private company limited by shares | Live |
| DRAGON DIAMOND LIMITED | Private company limited by shares | Live |
| DREAM DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| DIAMOND DREAM LIMITED | Private company limited by shares | Live |
| DIAMOND DREAM LIMITED | | Live |
| SILVER DIAMOND DREAM LIMITED | | Live |
| Dreameteor Diamond Limited | Private company limited by shares | Dissolved |
| DIAMOND DRIVE LIMITED | Private company limited by shares | Live |
| Diamond Duck Limited | Private company limited by shares | Live |
| DUNIA DIAMOND COMPANY LIMITED | Private company limited by shares | Live |
| DYNAMIC DIAMOND LIMITED | Private company limited by shares | Live |
| DIAMOND DYNASTY LIMITED | Private company limited by shares | Live |
| EAST DIAMOND LIMITED | Private company limited by shares | Live |
| EAST DIAMOND LIMITED | | Live |
| EAST DIAMOND SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| EAST COAST DIAMOND COMPANY LIMITED | Private company limited by shares | Live |
| EAST DIAMOND HONG KONG LIMITED | | Live |
| EASY WIN DIAMOND LIMITED | Private company limited by shares | Dissolved |
| EASY DIAMOND LIMITED | Private company limited by shares | Dissolved |
| Best Diamond eCommerce Limited | Private company limited by shares | Live |
| EDELMAN DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond Education Int Limited | Private company limited by shares | Live |
| Diamond Hill Education Limited | Private company limited by shares | Live |
| Diamond Monkey Education Limited | Private company limited by shares | Live |
| Eight & Diamond Limited | Private company limited by shares | Live |
| ELDORADO DIAMOND COLLECTION LIMITED | Private company limited by shares | Dissolved |
| DIAMOND ELECTRONIC MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| DIAMOND ELITE LIMITED | Private company limited by shares | Live |
| ELITE DIAMOND LIMITED | Private company limited by shares | Live |
| ELITE DIAMOND LIMITED | Private company limited by shares | Live |
| Diamond Elite Solutions Limited | Private company limited by shares | Live |
| DIAMOND EMPEROR LIMITED | Private company limited by shares | Dissolved |
| ENCHANTING DIAMOND LIMITED | Private company limited by shares | Live |
| ENGLAND DIAMOND COMPANY LIMITED | Private company limited by shares | Live |
| ENHANCING DIAMOND LIMITED | Private company limited by shares | Dissolved |
| SKY DIAMOND ENTERPRISE LIMITED | Private company limited by shares | Live |
| DIAMOND SKY ENTERPRISE LIMITED | Private company limited by shares | Live |
| DIAMOND WAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| DIAMOND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| DIAMOND REX ENTERPRISES LIMITED | Private company limited by shares | Live |
| DIAMOND ENTERPRISES LIMITED | Private company limited by shares | Live |
| DIAMOND WIN ENTERPRISES LIMITED | Private company limited by shares | Live |
| DIAMOND ENTERTAINMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Eros Diamond Limited | Private company limited by shares | Dissolved |
| DIAMOND SKY ESTATE LIMITED | Private company limited by shares | Live |
| ETERNAL DIAMOND LIMITED | Private company limited by shares | Dissolved |
| ETERNAL DIAMOND INVESTMENT LIMITED | Private company limited by shares | Live |
| Eternite Diamond and Jewellery Company Limited | Private company limited by shares | Live |
| EVER DIAMOND LIMITED | Private company limited by shares | Live |
| EVER BEST DIAMOND LIMITED | Private company limited by shares | Dissolved |