Lab-grown diamond
1.00 carat centre diamond
D/E/F colour · VVS2 · 3EX
IGI · Round brilliant · Four or six prongs
Explore lab-grown rings
Where imagination
becomes jewellery.
A little wonder. A promise made personal.
Engagement rings and bespoke jewellery, made in Singapore. Personal guidance, clear written quotations and care after collection.
See ring pricesYINUO · SINGAPOREOne promise. A lifetime of meaning.
Natural & lab-grown diamondsMade in SingaporeWritten quotations before production
Every piece
begins with you.
A stone that catches your eye. A sketch. A moment worth remembering. Bring a little of yourself; we’ll help you shape the rest.
Imagined together. Made in Singapore.
A CLEAR PLACE TO BEGIN
Your ring.
A clear starting price.
Start with a complete-ring price. Then choose the individual diamond and the setting together.
Natural diamond
0.50 carat centre diamond
S$4,999
F/G colour · VS2 or better · GIA
18k white gold · Four or six prongs
Explore this natural ringNatural diamond
1.00 carat centre diamond
S$7,999
E/F colour · VS2 or better · GIA
18k white gold · Four or six prongs
Explore this natural ringPrices are for the complete ring; carat weight refers to the centre diamond. Standard four- or six-prong settings are included. Published natural-ring prices are for 18k white gold; natural PT950 complete rings are quoted by configuration. Other gold colours are confirmed by quotation. The stone, report, ring size, design, availability and quotation validity are confirmed in writing.
BESPOKE, BY 一诺
Yours, before
it ever exists.
The first idea might be a sketch. A favourite colour. A piece you’ve imagined for years. We work with you to turn it into jewellery with a meaning of its own.
From engagement rings to a personal gemstone commission, your imagination is our starting point.
Discover bespoke jewellery
THE WAY WE WORK
Considered at
every step.
Clear choices. A design agreed together. Local production. Support after collection.
Tell us your story
Bring your ideas, preferred budget and occasion. A sketch, a photograph or a feeling is a good place to start.
Choose the details
Explore the diamond or gemstone, metal, proportions and setting. We explain the choices that affect appearance and price.
Agree your design
Review your design and written quotation before production. The stone specification, price, timing and payment terms are agreed together.
Make it yours
Your jewellery is produced locally in Singapore. Collection and after-sales support continue the conversation beyond the finished piece.
一诺 · ONE PROMISE
The name for Quality.
Honesty in our guidance. Care in our workmanship. Reliability after the sale. These are the promises that shape our house.
Meet 一诺BEFORE YOUR FIRST VISIT
A little clarity
goes a long way.
How much is a 1 carat lab-grown engagement ring?
Our 1.00 ct round brilliant lab-grown ring is S$2,500 in 18k white gold or S$2,999 in platinum. The offered specification is D/E/F colour, VVS2 and 3EX, with a standard four- or six-prong setting. The individual stone and report are confirmed in writing.
Do you make custom jewellery in Singapore?
Yes. We work with you on the design, diamond or gemstone selection and setting, with local production in Singapore. The agreed design and quotation come before production.
Where can I visit 一诺?
Visit us at 11 Collyer Quay, The Arcade, #01-01, Singapore 049317. WhatsApp +65 8091 2890 to arrange a time and discuss what you would like to see.
A good ring starts with a conversation.
Share what matters to you. We’ll help you compare stones, choose the setting and confirm your design and quotation before production.
A budget, an idea or a reference photo is enough to start.
WhatsApp opens with a draft. Press Send there to reach us.