5 mm Lab-Grown Diamond Engagement Ring, 18K Gold
Product code: NCH-013
Material
Ring size (Vietnamese sizing)
Not sure of your size? Order anyway — we will help you measure when we contact you to confirm. Free lifetime resizing.
Quantity
An 18K yellow gold engagement ring: a 5 mm round lab-grown center diamond on four round prongs with domed tips, one small bezel-set stone hidden on each side, and a plain band.
Jewelry details
A classic solitaire engagement ring in 18K yellow gold: a 5 mm round lab-grown diamond on four round prongs with domed tips, the plain band rising gradually to support the head. The distinctive detail lies on both sides of the head — each side hides a small bezel-set round stone, visible only from the side.
From above, this is a solitaire in the true sense. The two small stones at the sides of the head are for the wearer — revealed only when the hand tilts.
Design: four round prongs, two stones hidden at the sides
The 5 mm center stone is held by four round post prongs, their tips filed into domes so they don't scratch fabric or hair. The head is open, without a surrounding bezel, so light enters the stone from every side. The four prong bases descend in a V and blend into the shoulders, the band thickening from the base up to the head — a classic engagement ring shape, with no superfluous detail.
Just beneath the head, on the front and back, each side has a small round stone set within a ring of metal. These two stones don't make the face any busier, but when seen from the side or when the wearer raises her hand, they flash right where there's usually only plain metal.
In the workshop, the four prongs are left longer than needed; the jeweler sets the center stone, aligns its table flat, and only then cuts the prongs short and shapes their tips into domes. The two small stones at the sides are set by pressing a ring of metal around their edges — they sit right by the prong bases, a tight spot to work, so the jeweler sets these two first before the center stone.
Three things to check when you hold it
The honest trade-offs. First, four prongs lift the center stone high, so it catches on clothing, hair and gloves and gets knocked more easily than a low setting. Second, four prongs are the minimum to hold a round stone; if one prong bends or wears, the stone can loosen, so the prongs need periodic checks. Third, the two stones at the sides are very small and sit beneath the head, almost unseen by others — this is a detail for the wearer, not for show. Fourth, 18K gold is softer than 14K, so the prong tips wear slightly faster if worn every day during a lot of manual work.
Metal: 18K yellow gold and lab-grown diamonds
18K gold has a higher gold content than 14K, its yellow deeper and noticeably warmer, creating a clear contrast beside a white diamond — the true character of a classic engagement ring. In exchange, 18K is softer, so the four prongs on this design are made as round posts thick enough to hold the stone securely. Yellow gold doesn't fade like white gold's plating; it just needs polishing when the surface is scratched.
Both the center stone and the two small stones are lab-grown diamonds: the same carbon composition, hardness and brilliance as mined diamonds, differing in origin. At 5 mm, choosing a lab-grown stone lets you step up in color and clarity within the same budget. With yellow gold, you can choose a color one grade lower than you would on white gold and it still looks white to the naked eye.
Who it suits, sizing notes and keeping it bright
This design suits someone who loves a classic, unfussy engagement ring and the warmth of yellow gold. The plain band leaves room for a wedding band worn snugly beside it later — a slim yellow gold wedding band, plain or set with small stones, pairs perfectly.
On sizing: engagement rings are often prepared in secret, so if you don't know her size yet, borrow a ring she often wears on that exact finger to measure. The center stone sits high, making the head heavy, so choose a snug or slightly tight fit so the ring doesn't rotate. The band is plain, so enlarging or reducing it later is fairly easy.
On keeping it bright: each week, soak the ring in warm water with a little dish soap for about ten minutes, brush carefully beneath the center stone where lotion and dust tend to cling with a soft brush, then dry. Take the ring off for the gym, heavy lifting and housework with chemicals. Store it separately in a box. About every six months, bring it to the workshop to check the four prongs and re-polish the band.
Engagement ring advice at Thảo Linh Jewelry
You can try it on in person at the Thảo Linh Jewelry showroom, 120 Pham Thi Tanh, Chanh Hung Ward, Ho Chi Minh City, or call 0945 006 001 for sizing advice and help choosing a suitable center stone.
