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Marquise|Natural|GIA

1.18ct D IF Marquise Natural Diamond

EX • D/IF • GIA 6551477395

Certificate GIA 6551477395

Diamond specifications and retailer prices

From £5,558 GBP
₹710,271 INR
As of November 2, 2026
Save £1,850 GBP (25%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £7,408 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.18ct natural marquise diamond

This 1.18ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551477395. Listed at 8 retailers as of October 31, 2026, with prices from £5,558 to £7,408, a £1,850 spread on the same certified stone. Blue Nile lists it at £7,408. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
D
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551477395
Dimensions10.60 × 5.44 × 3.46 mm
L/W Ratio1.95
Culet sizeNone
Top View
10.60 mm5.44 mm1.18 ctD / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551477395
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £7,408 GBP|Low: £5,546 GBP|High: £7,591 GBP|Avg: £6,584 GBP|-2.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2£5,558 GBP
Retailer 5£5,897 GBP
Retailer 6£6,372 GBP
Retailer 4£6,408 GBP
Retailer 8£6,598 GBP
Retailer 7£6,772 GBP
Retailer 3£7,068 GBP
Blue Nile£7,408 GBP

31 data points across 8 retailers

8 retailers£5,558 GBP to £7,408 GBP

A+
Cheapest Retailer
-
£5,558 GBP
₹710,271 INR
A
Retailer 2
-
£5,897 GBP
SGD 10,693 SGD
View
A
Retailer 3
-
£6,372 GBP
$8,551 USD
View
A
Retailer 4
-
£6,408 GBP
View
A
Retailer 5
-
£6,598 GBP
$8,854 USD
View
Final sale: no returns
A
Retailer 6
-
£6,772 GBP
MYR 37,015 MYR
View
A
Retailer 7
-
£7,068 GBP
A$14,593 AUD
View
Most Expensive
B+
Blue Nile
29393445 · Oct 31
£7,408 GBP
$9,941 USD
View
7 more retailers have this diamond
Prices start from £5,558 GBPSave up to £1,850 GBP

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.

A+
1.18ct Marquise
£5,558 GBP