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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 $7,918 CAD
£4,463 GBP
As of October 30, 2026
Save $4,069 CAD (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $11,987 CAD at MOH London · As of October 29, 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 October 29, 2026, with prices from $7,918 to $11,987, a $4,069 spread on the same certified stone. MOH London lists it at $11,987. 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: Oct 30
Current: $11,987 CAD|Low: $6,007 CAD|High: $12,067 CAD|Avg: $7,689 CAD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$6,007 CAD
Retailer 4$6,276 CAD
Retailer 5$6,633 CAD
Retailer 7$6,942 CAD
Retailer 9$7,144 CAD
Retailer 8$7,532 CAD
Retailer 3$7,918 CAD
Retailer 2$8,535 CAD
Retailer 10$9,247 CAD
MOH London$11,987 CAD

29 data points across 10 retailers

3 retailers$7,918 CAD to $11,987 CAD

B+
Cheapest Retailer
-
$7,918 CAD
£4,463 GBP
B
Retailer 2
-
$8,535 CAD
€5,819 EUR
View
Most Expensive
B
MOH London
4E8487882 · Oct 29
$11,987 CAD
£6,757 GBP
View
2 more retailers have this diamond
Prices start from $7,918 CADSave up to $4,069 CAD

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
$7,918 CAD