About
Transparent quality, attentive service.
Ngọc Diệp Gold Shop (Ngọc Diệp Diamond & Jewelry) in Bien Hoa, Dong Nai puts two things first: gold of the right purity at the right weight, and care that continues long after you leave the store.
A piece of jewellery is only worth what you know about it. So at Ngọc Diệp, purity is tested with a spectrometer, every item is weighed in front of you, and every number is written on the invoice and guarantee. The rest is our job: cleaning, polishing, resizing, and keeping the piece as beautiful as the day you bought it.
Four commitments to quality
Correct purity
Every item is purity-tested with a spectrometer. The invoice states purity and weight so you can check them at any time.
Certified diamonds
Diamonds of 3.6 mm and above carry a 4C certificate: carat, colour, clarity and cut. The origin of stones and gold is stated clearly.
Careful craftsmanship
Modern equipment and skilled goldsmiths, with custom 3D design. Every join and prong is checked before handover.
Lifetime care
Free cleaning, polishing and ultrasonic cleaning for life. Resizing, prong re-tipping and stone checks free or at minimal cost.
Services in store
Jewellery advice
Purity, design and budget suggestions for daily wear, weddings, gifts or saving.
Accurate ring sizing
Measured with standard ring sizers in store; remote sizing on Zalo using a ring you already wear.
Custom design
3D models from your idea or reference photos, approved before crafting.
Trade-in and buy-back
Trade-in at published rates; we also test and buy jewellery bought elsewhere at market price.
Insured delivery
Nationwide, insured at 100% of value. Pay by cash, bank transfer, card or on delivery depending on the item.
Instalments
Instalment purchases are available. Ask our staff or see the online shop for conditions.
Published trade-in rates
Trade-in rates are published in advance and apply equally to every customer. Keep your invoice and guarantee for a quick, accurate valuation.
| Type | Free warranty | Selling back to us | Exchanging |
|---|---|---|---|
| 23K–24K gold | — | At market price | At market price |
| 610/680/710 gold | Cleaning, polishing, small-stone setting | At market price | Like-for-like when intact and current; broken or older designs −80,000 VND per chỉ |
| Italian 750 gold | Small-stone setting, cleaning | −20% within 6 months, −30% after | −15% within 6 months, −25% after |
| Diamond settings | 1 month | −25% of invoice price | −20% of invoice price |
Summary of the "Warranty and buy-back" policy published at ngocdiepjewelry.com. Rates may change over time; please confirm with our staff before any transaction.
Ngọc Diệp in numbers
Questions about our service
Business information
DNTN Vàng Bạc Ngọc Diệp Diamond & Jewelry. Business registration No. 3604115922, issued by the Business Registration Office – Department of Finance of Dong Nai City on 28 July 2026. E-commerce website notified to the Ministry of Industry and Trade.
Contact usHow does Ngọc Diệp Gold Shop test gold purity?
With a spectrometer; purity and weight are written on the invoice for every item.
Are Ngọc Diệp Bien Hoa and Ngọc Diệp Dong Nai the same shop?
Yes. It is one shop: Ngọc Diệp Gold Shop at 242 Cách Mạng Tháng 8, Trấn Biên Ward, Dong Nai City, in the area formerly called Bien Hoa.
What makes a gold shop in Dong Nai trustworthy?
A business registration, purity testing by machine, weighing in front of you, an invoice stating purity and weight, a posted trade-in policy and aftercare. See the ten checks in our guide to choosing a trusted gold shop in Dong Nai.
Does Ngọc Diệp clean and polish jewellery for free?
Yes. Jewellery bought at the shop is cleaned, polished and ultrasonically cleaned free for life.
Will the shop buy gold bought elsewhere?
Yes. The shop tests purity with a spectrometer, weighs transparently and buys or exchanges at the market price.
Is ring resizing free?
Resizing, prong re-tipping and stone checks are free, or charged at minimal cost if extra metal is needed.
Is it safe to buy from Ngọc Diệp online?
Orders ship nationwide insured at 100% of value; pay by cash, transfer, card or on delivery depending on the item.