Gold & diamond guides

A handbook from Ngọc Diệp Gold Shop: what to know before you buy, wear, trade in and care for gold and diamonds.

Rings6 min read

How to measure your ring size at home: 5 methods and a full size chart

How to measure ring size at home with string, paper, an existing ring or a printed sizer; a chart converting Vietnamese ring sizes to circumference, diameter, US and EU sizes; tips for wide bands, wedding rings and surprise gifts.

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Wedding rings5 min read

How to choose wedding rings: metal, gold purity, style, size and budget

A complete wedding ring guide: 24K, 18K (750), white gold or platinum; how wide a band should be; plain or diamond; engraving; when to order and how to keep rings looking new.

Gold5 min read

Gold purity explained: 24K, 23K, 18K (750), 610, 680, 710, white and rose gold

Gold purity made simple: karats and parts per thousand; the gold content of 24K, 23K, Italian 750 and 610/680/710 gold; what white and rose gold are; and which to choose for saving, wedding rings or daily wear.

Diamonds5 min read

How to choose a diamond: the 4Cs, sizes in mm, GIA reports and budget tips

A guide to choosing a natural diamond: the 4Cs (cut, colour, clarity, carat), a mm-to-carat chart, how to read a GIA report, fluorescence, settings and how to get the best stone for your budget.

Weddings4 min read

Vietnamese wedding gold: what it includes and how to prepare

What Vietnamese wedding gold includes, who gives what at the engagement and wedding ceremonies, 24K versus 18K, the wedding bangle (kiềng), the bride’s jewellery set, budgeting, timing and caring for wedding gold afterwards.

Buying4 min read

How gold jewellery is priced and traded in: gold value, workmanship, stones and more

What makes up the price of gold jewellery, how buying and selling prices differ, why selling back involves deductions, how to read invoices and guarantees, and how to trade in for the best value.

Care3 min read

How to care for and clean gold, diamond and pearl jewellery at home

How to clean 24K, 750, white and rose gold, diamonds, pearls and coloured stones correctly; what to avoid; how to store jewellery; and when to bring it in for cleaning, re-plating and prong checks.

Buying gold5 min read

How to choose a trusted gold shop in Dong Nai: 10 checks before you buy

What should a trusted gold shop in Dong Nai offer? Ten things you can verify at the counter: licence, purity testing, scales, invoice, trade-in policy and aftercare, and how Ngọc Diệp Dong Nai delivers each.