- All Duong’s items come with a Certification of authenticity of the brand.
- A Gem identification report (by Gem Center Lab Hanoi) will be supplied (free of charge) upon request for items with value above USD 1,000 (one thousand USD). Please fill in the note section in the Checking out page in case you need one.
- Should you have any special requirement for gem certification (i.e: GIA certification), please tell us by filling in the note section in the Checking out page, we will contact you for further info. 

• Our ring size in the dropdown menu above is Hong Kong ring sizing system.

You can read more about how to define your ring size here Size Guide

• Measurements:

Ring length: cm/ in
Ring width: cm/ in

All gemstones we use are natural, untreated and they are slightly different one from another.

Natural gemstones are like human beings, each one has its own character. Every color zoning, tiny flaw, inclusions are their personal identity.

Enjoy your natural gems while embracing their own beauty.

DOMESTIC DELIVERY

• We free ship all orders by normal post

INTERNATIONAL DELIVERY

• We free ship by FeDex to orders of value of above 1200 USD
• Shipping fee by FeDex to orders of value below 1200 USD is 40 USD
• We free ship by Fly Express to orders of value of above 600 USD
• Shipping fee by Fly Express to orders of value below 600 USD is 25 USD
• We free ship by Nomarl Post to orders of value of above 300 USD
• Shipping fee by Nomarl Post to orders of value below 300 USD is 15 USD

More details here