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Marquise|Natural|GIA

1.31ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 5242045790

Certificate GIA 5242045790

Diamond specifications and retailer prices

From £3,304 GBP
$4,434 USD
As of October 27, 2026
Save £1,568 GBP (32%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £7,073 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.31ct natural marquise diamond

This 1.31ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242045790. Listed at 10 retailers as of October 27, 2026, with a 47% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5242045790
Dimensions10.96 × 5.64 × 3.59 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
10.96 mm5.64 mm1.31 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242045790
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
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: Oct 27
Current: £4,514 GBP|Low: £3,304 GBP|High: £6,817 GBP|Avg: £4,420 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 3£3,304 GBP
Retailer 4£3,592 GBP
Retailer 8£3,793 GBP
Retailer 6£3,898 GBP
Retailer 1£4,514 GBP
Retailer 2£4,517 GBP
Retailer 7£4,872 GBP
Retailer 5£6,817 GBP

32 data points across 8 retailers

10 retailers£3,304 GBP to £4,872 GBP

A
Cheapest Retailer
-
£3,304 GBP
$4,434 USD
B+
Retailer 2
-
£3,486 GBP
A$7,197 AUD
View
B+
Retailer 3
-
£3,592 GBP
CA$6,695 CAD
View
Retailer 4
-
£3,831 GBP
$5,141 USD
View
Price last confirmed 34 days ago
Retailer 5
-
£3,898 GBP
$5,231 USD
View
Price last confirmed 12 days ago
Retailer 6
-
£4,420 GBP
$5,932 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
£4,514 GBP
€5,769 EUR
View
B
Retailer 8
-
£4,517 GBP
View
B
Retailer 9
-
£4,872 GBP
$6,538 USD
View
Most Expensive
NZ Jewellers
bc9b96bc-500a-4e4c-9bf6-4de0b76be06f · Sep 30
£7,073 GBP
$9,492 USD
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from £3,304 GBPSave up to £1,568 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
1.31ct Marquise
£3,304 GBP