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Round|Natural|GIA

1.18ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1525556641

Certificate GIA 1525556641

Diamond specifications and retailer prices

From €5,074 EUR
£4,464 GBP
As of November 1, 2026
Save €2,566 EUR (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €7,640 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.18ct natural round diamond

This 1.18ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1525556641. Listed at 3 retailers as of November 1, 2026, with prices from €5,074 to €7,640, a €2,566 spread on the same certified stone. MOH London lists it at €7,640. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.18
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1525556641
Dimensions6.78 × 6.81 × 4.18 mm
L/W Ratio1.00
Top View
6.78 mm6.81 mm1.18 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525556641
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €7,640 EUR|Low: €3,849 EUR|High: €7,732 EUR|Avg: €4,941 EUR|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6€3,849 EUR
Retailer 4€4,022 EUR
Retailer 5€4,250 EUR
Retailer 7€4,448 EUR
Retailer 9€4,578 EUR
Retailer 8€4,826 EUR
Retailer 2€5,074 EUR
Retailer 3€5,469 EUR
Retailer 10€5,925 EUR
MOH London€7,640 EUR

30 data points across 10 retailers

3 retailers€5,074 EUR to €7,640 EUR

B+
Cheapest Retailer
-
€5,074 EUR
£4,464 GBP
B
Retailer 2
-
€5,469 EUR
View
Most Expensive
B
MOH London
4E8487882 · Nov 1
€7,640 EUR
£6,721 GBP
View
2 more retailers have this diamond
Prices start from €5,074 EURSave up to €2,566 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.18ct Round
€5,074 EUR