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Marquise|Natural|GIA

1.01ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 5241026938

Certificate GIA 5241026938

Diamond specifications and retailer prices

From £2,311 GBP
As of November 6, 2026
Save £2,819 GBP (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,508 GBP at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241026938. Listed at 20 retailers as of November 4, 2026, with a 122% 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

1.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241026938
Dimensions10.05 × 5.15 × 3.28 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
10.05 mm5.15 mm1.01 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241026938
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.7%

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: Nov 6
Current: £2,571 GBP|Low: £2,291 GBP|High: £5,274 GBP|Avg: £3,124 GBP|-18.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 2£2,311 GBP
Retailer 9£2,356 GBP
Retailer 7£2,416 GBP
Retailer 16£2,438 GBP
Retailer 1£2,571 GBP
Retailer 5£2,571 GBP
Retailer 17£2,648 GBP
Retailer 10£2,671 GBP
Retailer 14£2,727 GBP
Retailer 4£2,774 GBP
Retailer 18£2,816 GBP
Retailer 12£2,889 GBP
Retailer 6£3,160 GBP
Retailer 11£3,386 GBP
Retailer 13£3,754 GBP
Retailer 3£4,005 GBP
Retailer 8£4,614 GBP
Retailer 15£5,130 GBP

21 data points across 18 retailers

20 retailers£2,311 GBP to £5,130 GBP

A
Cheapest Retailer
-
£2,311 GBP
A
Retailer 2
-
£2,356 GBP
View
A
Retailer 3
-
£2,416 GBP
View
A
Retailer 4
-
£2,438 GBP
View
A
Retailer 5
-
£2,571 GBP
View
A
Retailer 6
-
£2,571 GBP
View
Final sale: no returns
A
Retailer 7
-
£2,648 GBP
View
A
Retailer 8
-
£2,671 GBP
View
B+
Retailer 9
-
£2,727 GBP
View
B+
Retailer 10
-
£2,774 GBP
View
B+
Retailer 11
-
£2,816 GBP
View
B+
Retailer 12
-
£2,889 GBP
View
B+
Retailer 13
-
£3,160 GBP
View
Retailer 14
-
£3,372 GBP
View
Price last confirmed 28 days ago
B+
Retailer 15
-
£3,386 GBP
View
B+
Retailer 16
-
£3,754 GBP
View
B+
Retailer 17
-
£4,005 GBP
View
B
Retailer 18
-
£4,614 GBP
View
B
Retailer 19
-
£5,130 GBP
View
Most Expensive
NZ Jewellers
27cc6851-1cbc-4e0c-90a3-abf3186a16ff · Sep 20
£5,508 GBP
$7,413 USD
View
Price last confirmed 46 days ago
19 more retailers have this diamond
Prices start from £2,311 GBPSave up to £2,819 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
1.01ct Marquise
£2,311 GBP