House of Diamonds Hawaii | 37 followers on LinkedIn. A locally owned and family-run diamond wholesaler that promises you won't lose sleep over buying a diamond. | The House of Diamonds is a Hawaii-based diamond wholesaler turned retailer. Since 1984, we've helped thousands of happy couples and individuals design their dream engagement rings, wedding bands and other jewelry. From our family to yours, we put lots of love and careful attention into each and every item.