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Marquise|Natural|GIA

1.01ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 1242100148

Certificate GIA 1242100148

Diamond specifications and retailer prices

From £2,045 GBP
As of November 4, 2026
Save £2,588 GBP (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,633 GBP at NZ Jewellers · As of November 5, 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 1242100148. Listed at 13 retailers as of November 4, 2026, with prices from £2,045 to £4,633, a £2,588 spread on the same certified stone. NZ Jewellers lists it at £4,633. 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
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1242100148
Dimensions9.72 × 5.30 × 3.34 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
9.72 mm5.30 mm1.01 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1242100148
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

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 4
Current: £4,633 GBP|Low: £2,045 GBP|High: £4,633 GBP|Avg: £2,637 GBP|+14.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4£2,045 GBP
Retailer 12£2,132 GBP
Retailer 2£2,149 GBP
Retailer 3£2,216 GBP
Retailer 10£2,216 GBP
Retailer 9£2,301 GBP
Retailer 6£2,346 GBP
Retailer 11£2,557 GBP
Retailer 13£2,583 GBP
Retailer 5£2,593 GBP
Retailer 7£2,704 GBP
Retailer 8£3,696 GBP
NZ Jewellers£4,633 GBP

19 data points across 13 retailers

13 retailers£2,045 GBP to £4,633 GBP

A
Cheapest Retailer
-
£2,045 GBP
Final sale: no returns
A
Retailer 2
-
£2,132 GBP
View
A
Retailer 3
-
£2,149 GBP
View
Retailer 4
-
£2,216 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£2,216 GBP
View
A
Retailer 6
-
£2,301 GBP
View
A
Retailer 7
-
£2,346 GBP
View
A
Retailer 8
-
£2,557 GBP
View
Retailer 9
-
£2,583 GBP
View
Price last confirmed 13 days ago
Retailer 10
-
£2,593 GBP
View
Price last confirmed 11 days ago
B+
Retailer 11
-
£2,704 GBP
View
B+
Retailer 12
-
£3,696 GBP
View
Most Expensive
B
NZ Jewellers
c3eb2987-ce19-4f2f-aaf5-7467343a7841 · Nov 5
£4,633 GBP
$6,236 USD
View
12 more retailers have this diamond
Prices start from £2,045 GBPSave up to £2,588 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
£2,045 GBP