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Engagement ring The One 9K yellow gold with diamond 1.50ct G/SI

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€7,049 (-5%)
€6,697
incl. VAT
Express delivery on 31/07
standard shipping: 03/08
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Precious metals - the most important criteria 

Yellow gold, white gold and rose gold are available in alloys of 14 carats (58.5% fine gold) and 18 carats (75% fine gold).

All our jewellery is nickel-free! 

White gold (Wg) is a light, white-grey alloy of gold, palladium, and silver. It is particularly popular for engagement rings.

Valuable silver 925/- (sterling silver, Ag) consists of 92.5% pure silver. 7.5% is made up of other metals, such as copper.

Rose gold (Rg) is a pink alloy of fine gold and copper. The higher the copper content, the redder the colour.

Yellow gold (Gg) used for jewellery is an alloy of gold, silver and copper. It is the most popular gold colour in the world.

Platinum 950/- (Pt) is a rare and expensive precious metal. Platinum has a high density, it is particularly durable and robust.

14 and 18 carat alloys - durable & stable

Only the addition of silver and copper (among others) to pure but very soft fine gold makes gold alloys durable and resistant.

The colour also changes from golden yellow to pink to silver white according to the mixing ratio.

How much fine gold is included? 

Alloys with a fineness of around 14 carats (or 58.5% pure gold) have the highest strength and hardness. At 18 carats it is already 75.5% fine gold. Alloys with a higher proportion of fine gold are extremely susceptible to scratches and mechanical stress.

You'll only receive nickel-free jewellery - perfect for allergy sufferers and anyone with sensitive skin.

  • 0.15ct (3.4mm) €600
  • 0.25ct (4.1mm) €775
  • 0.40ct (4.8mm) €1,173
  • 0.50ct (5.2mm) €1,328
  • 0.60ct (5.3mm) €1,524
  • 0.75ct (5.9mm) €1,878
  • 1.00ct (6.4mm) €3,161
  • 1.25ct (7.0mm) €4,398
  • 1.50ct (7.4mm) €6,697
  • 2.00ct (8.2mm) €12,938
  • 2.50ct (8.7mm) €22,486
  • 3.00ct (9.3mm) €33,354

5 diamond qualities at a glance

Term Description
H/SI Solid entry quality into the world of diamonds
G/SI Recommended quality with excellent properties
G/VS The upper class with even more brilliance
G/IF For connoisseurs, excellent quality
D/IF River: very fine white, flawless and extremely rare

The 4 C's give information about the quality of a diamond. 

1. The colour of the diamonds: in our case D, G oder H  
Diamonds available from us with the colour classification D, G and H appear colourless. 

2. The purity of our diamonds: SI, VS or IF  
SI = Inclusions only visible at 10x magnification, not with the naked eye 
VS = Inclusions difficult to detect even at 10x magnification 
IF = NO inclusions, designation: flawless.  

3. The cut: For our diamonds "very good". 
The quality of the cut ranges from "excellent" and "very good" to "good", "fair" and "poor". With us you always buy diamonds with a cut quality of "very good".

4. The diamond weight 
If all other quality criteria are the same, the following applies: The higher the carat (ct.) weight of a diamond, the more expensive it is.

Learn more about diamonds and diamond quality.

Also available with a lab-grown diamond

How to find out the right ring size

In order to determine your partners ring size, we offer two free options:

1. The ring template to print out

Use this PDF you can find out the ring size without having to measure the ring finger. The perfect option if you want to give the ring to someone as a surprise.

2. The ring tape measure

The ring tape measure works like a belt around the finger. Simply send us an email with name and adress. We will send you the ring tape measure free of charge by post within 5 working days.

Changing ring size is free of charge with us

The ring doesn't fit? No problem! We change the ring size for you once, free of charge - including free shipping.

International ringsize table

The international ringsize table helps you find the right size for your ring in our shop. Our size (see: second column) is the inner circumference of the ring in millimetre.

∅ mm Our size EU/FRA ENG USA/CAN JPN
12,7 40 0 C 1.4 (1) 0,2
13,0 41 1 C 1/2 1.8 (1-) 1,1
13,3 42 2 D 1/2 2.2 (2) 2,1
13,7 43 3 E 1/2 2.6 (2-) 3,1
14,0 44 4 F 3.0 (2-) 4,0
14,3 45 5 G 3.4 (3) 5,0
14,6 46 6 G 1/2 3.7 (3-) 5,9
14,9 47 7 H 1/2 4.1 (4) 6,9
15,3 48 8 I 1/2 4.5 (4-) 7,8
15,6 49 9 J 4.9 (4-) 8,8
15,9 50 10 K 5.3 (5) 9,7
16,3 51 11 K 1/2 5.7 (5-) 10,7
16,6 52 12 L 1/2 6.1 (6) 11,6
16,9 53 13 M 1/2 6.4 (6) 12,6
17,2 54 14 N 6.8 (6-) 13,6
17,5 55 15 O 7.2 (7) 14,5
17,8 56 16 P 7.6 (7-) 15,5
18,2 57 17 P 1/2 8.0 (7-) 16,4
18,5 58 18 Q 1/2 8.4 (8) 17,4
18,8 59 19 R 8.7 (8-) 18,3
19,1 60 20 S 9.1 (9) 19,3
19,4 61 21 T 9.5 (9-) 20,2
19,7 62 22 T 1/2 9.9 (9-) 21,2
20,1 63 23 U 1/2 10.3 (10) 22,2
20,4 64 24 V 10.7 (10-) 23,1
20,7 65 25 W 11.0 (11) 24,1
21,0 66 26 X 11.4 (11) 25,0
21,3 67 27 X 1/2 11.8 (11-) 26,0
21,6 68 28 Y 1/2 12.2 (12) 26,9
22,0 69 29 Z 1/2 12.6 (12-) 27,9
22,3 70 30 Z +1 13.0 (12-) 28,8
0/30 Symbols
Font style:
Symbols:
Engraving
Preview. The appearance of the engraving may vary. We engrave with the most modern laser engraving technique.

Advice for free engraving 

For all the romantics, our free engraving is a great way to dedicate a message to your beloved that will accompany them everywhere.

engraving example – font: Arial

Trend alert: Engraving coordinates

Engraving your first names, with or without date, or a nickname, which often only the partner knows are the most popular engravings.Poetic phrases such as "Forever mine, forever thine, forever ours" or funny things such as "Please say YES!" are often engraved.

engraving example – font: Times

Trend: Engraving cooridnates

We highly recommend engraving the geographical coordinates of your first date. Or your first kiss or the place where you are proposing. The jewellery museum in Pforzheim for example, has the GPS coordinates 48°53'9.622''N 8°41'50.337''E. 

engraving example – cursive handwriting

Free engraving after you propose too!

If you want to propose first, that's no problem. We also engrave your piece of jewellery afterwards free of charge. We also take care of the shipping and return for you!

Extraordinary, enchanting and seductive: The solitaire ring The One perfectly accentuates the diamond. Our The One engagement ring develops its special look by a combination of the curved surface of the ring band and the clear, contrasting lines that form the almost free-standing frame. The gorgeous combination of the different shapes makes the diamond raise above the ring band, where it shines bright and sparkling.

Gemstone
Gemstone: natural diamond
Shape: brilliant
Stone size: 1.50ct
Clarity: small inclusions (SI)
Colour: fine white (G)
Cut grade: very good
Fluorescence: none
Certificate: GIA
Metal, dimensions and design
Alloying: 9K yellow gold
Surface: polished
Setting: solitaire
Customer ratings
19/07/2026 mmmmm
Beautiful customization of engagement and wedding rings with excellent customer service!
23/09/2024 mmmmm
Very fast delivery and products with outstanding quality!
25/09/2023 mmmmm
Everything was great. I can only recommend them. Great customer service as well.
24/04/2022 mmmmm
Excellent communication from the company and beautiful products.
23/12/2021 mmmmm
Thank you for your perfect service and beautiful ring! It was a pleasure to communicate with you through out the all ...
Authenticity of the reviews
Reasons for our shop
  • Handcrafted engagement rings from our atelier in Pforzheim
  • 10,000 happy couples and an excellent rating of 4.9/5
  • 101-day return guarantee – take your time with the proposal, plus ring resizing for life
Wedding rings that match with engagement ring
Wedding rings that match The One model
Fits perfectly with engagement ring The One.
Wedding rings matching The One
Engagement ring The One 9K yellow gold with diamond 1.50ct G/SI €6,697