All Duong Jewelry pieces are handcrafted at our workshop in Hanoi, Vietnam. You can currently explore our collections at our flagships in Ho Chi Minh City, Hanoi and Milan. You can also shop online through our official website. Our jewelry is also available at selected high-end luxury resorts and concept stores in Vietnam & abroad. Please contact us or visit our where to find us page for the latest list.

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Yes, we do. Please contact us with your ideas and we can discuss further.

We use various types of metals: solid gold, sterling silver (silver 925) and brass as well as stainless steel depends on the design. 18K, 14K gold are used exclusively for our fine jewelry collection. For our affordable collection we use lower karat gold 10K and other metals mentioned above. These metals usually plated with 22K gold, rhodium or black rhodium for aesthetical purpose and a more durable surface. All of our jewelry are hallmarked with "dp" For precious metals: we will mark "18K" for 18k gold, "14K" for 14k gold, "10K" for 10K gold, and "925" for sterling silver. There will be no stamp for brass or other metals.

- Solid gold doesn’t tarnish, they just loose their brightness over time due to scratches during wearing. After a certain time of use, your jewelry should need to be re-polishing/re-buffing by professional in order to regain its original beauty. - Regarding plated jewelry, the plating will wear off eventually due to usage, humidity and your skin chemistry, however if you look after your pieces, you will prolong the plating. - We provide you with care instructions for all jewelry so it will last as long as possible. Please read here - All Duong’s items benefit a lifelong free re-polishing policy. - According to our policy, full-price jewelry purchased from Duong will be replated one time free of charge within the first 12 months. Discounted items will be applied a small fee for re-plating. Please contact us for further information.

The coating applied by electroplating can be usually from 0.5 to 5 microns thick (this depends on the producers). By creating a chemical bond, the plating is a permanent addition to the surface of the base metal. This means that it will not naturally fall off or separate. However, plating can be worn off over months and years of use and wear. Duong’s jewelry applies professional procedure using certified galvanic solutions from Switzerland and Italy. The thickness of metal applied is 2 micron and dipping time around 8 minutes.

Yes, our jewelry are hypoallergenic. We use electroplating solutions from Switzerland or Italy and they are all Nickel free, Cadmium Free, Lead free.

We use mostly gemstones from Vietnam. Vietnam is one of the most prolific sources of gemstones and minerals in Asia. There is an enormous variety of gem types found in the country including ruby, sapphire, spinel, aquamarine, topaz, peridot, tourmaline, garnet, tektite, agate, quartz, amethyst, citrine, and many more. Some gemstones we use are imported such as: diamond, opal or gemstones listed below which Vietnam does not have a mining source. Diamond: South Africa, Australia Jadeite and Nephrite: Burma Tanzanite: Tanzania (name after this country and can be found only there) Black opal: Australia Crystal opal: Ethiopia Labradorite: Canada (name after the Labrador Peninsula) Malachite: Namibia Tsavorite: Tanzania All imported gemstones are natural and untreated.

Yes, we use only natural and untreated gemstones in our jewelry. They may have origin from Vietnam or around the world.

- All Duong’s items will be provided with a Certification of authenticity of the brand. - All important jewelry from our fine jewelry collection are usually come with a Gem identification report by GEM CENTER LAB Hanoi. - A Gem identification report by GEM CENTER LAB Hanoi will be supplied (free of charge) upon request for items with a value of above USD 1,000 (one thousand USD). You can require it by filling in the note section in the Checking out page in case you need one. - Should you need any information regarding a special requirement for gem certification (i.e: GIA certification), drop us a line to service@duongprecious.com and we will get back with further detail.

You can always bring the jewelry you purchased from us for a free cleaning, polishing and one time free replating (within the first 12 months after purchasing) - this applied for full price items only. All the other services such as replating and repairing for jewelry purchased over 12-month warranty will be charged with a fee.

Your jewelry is under warranty for any manufacturing defects (in material or workmanship) and replating for a period of 12 months from the date of purchase (Please bring Duong’s certificate of authentication together with the jewelry if you have any problem during this period). This does not cover lost items, scratches, damages caused by accident (bent ring, deformed shape, broken chain), abuse, neglect, improper use or storage of the product, unauthorized modification (resizing or any repair work done by a third party), or normal wear and tear. Note: Items purchased through a third-party vendor (outside of duongprecious.com and/or Duong flagship boutiques and our authorized vendors listed on our website) will not be covered under Duong’s warranty.