DIAMOND SEARCH EN Polished Polished Polished We deliver your perfect polished stone on time and at the right price. From in-house sorting to express delivery, we use our global network to negotiate the most competitive prices for you. From this, we command a reliable reputation, as a trusted partner with a flawless record. Intergenerational Expertise We sell more than just premium stones. By choosing Windiam, we help you to buy with our expert knowledge cultivated over three generations of diamond trading. Our expertise helps you thrive in a changing marketplace to ensure your business profits. Online Inventory Our stock is updated in real-time, so you’ll always know what we have. While many our stones are HRD and GIA certified; we can source nearly any kind of polished diamond you wish for. Niche Provider We are your specialist wholesalers in Baguette diamonds for watch and jewellery manufacturing. Go Big Whether you need large white stones or natural fancy coloured diamonds; we have the capability to manufacture them. Express Delivery In today’s ultracompetitive market, you need your partner to deliver premium diamonds in the shortest lead time possible. Our global logistics partners (and sometimes even us!) deliver your diamonds when you need them. Matchmaking Our influential network connects to the best gemologists, artisans and manufacturers of the major world cities. If you need a specific advice or service, we’ll match you with the person or company you need. We nurture our network for your business growth. Call us to find out more about our polished services here. Windiam 360 Windiam 360 Controlled Sourcing Increased competition makes it tough to meet your customer’s demands. We solve this by training our sourcing specialists to understand, assess and fully meet your requirements. Our meticulous QC department uses Sortoscopes to ensure a minimum rejection of goods. And our global network gives us the edge to supply your customers with what they desire promptly. Manufacturing Our rough sourcing, polished expertise and optimised production experience meet your customer’s desires in our typically valued manner. When large and expensive stones are required, we’ll allocate rough stones to meet your specific demands. Memo Program Windiam understands the more diamonds your customers can inspect before purchasing the more your sales increase. That’s why we’ll loan you the premium diamonds you want on credit, interest-free. Buy Back If you have an unsatisfied customer and need to buy back a stone, we’ll offer you financial support as and when required. Re-Cutting/Re-Polishing/Repairing ‘Cut in Antwerp’ is synonymous with perfection and over 500 years of master craftsmanship. Our Antwerp-based headquarters gives us access to the best polishers in the world. Optimising your customer’s gems regularly provides a lifetime of happiness. Educate Your Team Tours of the diamond market improve your understanding of how the top traders operate. Technical training in diamond sorting including the correct use of an eye loupe and Sortoscope. Applying this product knowledge back home will help you stand out in today’s ultra-competitive business. Special Events Presenting your collections externally (e.g. trunk shows) is an excellent way to build your brand. We’ll support you by taking your event to the next level with one of our representatives and a premium stones collection. Certification We can provide you with certified diamonds. Sealed or laser inscribed from the distinguished Hoge Raad voor Diamant (HRD) or Gemological Institute of America (GIA) laboratories. Call our Antwerp head office to find out how our 360 program can benefit your business. Staying One Step Ahead Staying One Step Ahead We work daily with state of the art technology Meet the M-Screen A precise, automated melee device that screens round brilliant diamonds from 1.0 millimeter till 20 points for possible lab grown ones, or potential HPHT colour enhancement and simulants. The technology eliminates the risk of receiving compromised goods. Optec Industries This French company have developed an automated optical dimensional control system for round melees diamonds. With its precise cut quality control, it delivers on your specific measurements. As a preferred partner for many luxury watches and jewellery houses, we save you time and money by: Assorting your goods; every stone you receive from us is precisely as per specification Avoiding return shipments of rejected stones Both machines have been in operation since 2016 at our Antwerp headquarters. Alongside our in-house sorting team, these investments help optimise your search for the perfect diamonds. Ask us more or arrange a tour of our technology by calling our Antwerp head office here. Meet Gon Meet Gon Windiam Director / Owner “At Windiam, we don’t just buy and sell diamonds. We give all companies the resources and tools they need to thrive.When our clients succeed, we succeed.My favourite part of work is celebrating my client’s success, whether it’s a large sale or the launch of a collection. The relationships we foster are particularly gratifying. I get to know their stories, understand their challenges and learn about their aspirations. These personal relationships drive our business. We are trusted advisors to our clients not just because of our knowledge but because we care about your needs.” Gon Raz is a 3rd generation diamantaire bringing the heritage and impeccable reputation of his grandfather Dov and father Amos Raz who were among the founders of the Israeli Diamond Exchange. To speak to Gon, contact our Antwerp head office here . Locations Contact Locations Find your nearest office here Request an offer Find the perfect stone in our diamond search or click here to request an offer? Stay informed Subscribe for exclusive content ABOUT Why Windiam Our Commitment Career Our Catalog Disclaimer CONTACT Get in Touch Linkedin Locations Live chat SERVICES Monthly Specials Jewellery Services Diamonds as an Investment POLISHED Polished services Windiam 360 Staying one step ahead Meet Gon ROUGH Rough services Where we buy rough How we source & deliver Meet Alex HEAD OFFICE: Hoveniersstraat 53 Office 214 Diamond Exchange Building Box 18, Antwerp 2018, Belgium Phone +32 3 226 64 44 | Fax +32 3 226 62 00 | Email info@windiam.net Accreditations