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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 3545350624

Certificate GIA 3545350624

Diamond specifications and retailer prices

From £2,164 GBP
As of November 4, 2026
Save £2,921 GBP (57%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £5,084 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct 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 3545350624. Listed at 27 retailers as of November 4, 2026, with prices from £2,164 to £5,084, a £2,921 spread on the same certified stone. NZ Jewellers lists it at £5,084. 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

1.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.75°
Pavilion angle41.44°
OriginNatural
Grading LabGIA
CertificateGIA 3545350624
Dimensions10.02 × 5.25 × 3.30 mm
L/W Ratio1.91
Top View
10.02 mm5.25 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3545350624
Side View
Table 60.0%Crown 34.75°Girdle: MED-THKPavilion 41.44°Culet: NoneDepth 62.8%

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: £3,202 GBP|Low: £1,917 GBP|High: £4,939 GBP|Avg: £2,970 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£2,164 GBP
Retailer 2£2,257 GBP
Retailer 8£2,300 GBP
Retailer 9£2,440 GBP
Retailer 3£2,644 GBP
Retailer 11£2,745 GBP
Retailer 4£2,939 GBP
Retailer 10£3,126 GBP
Retailer 1£3,202 GBP
Retailer 5£3,562 GBP
Retailer 7£4,881 GBP

46 data points across 11 retailers

27 retailers£2,164 GBP to £5,084 GBP

A
Cheapest Retailer
-
£2,164 GBP
A
Retailer 2
-
£2,242 GBP
View
A
Retailer 3
-
£2,257 GBP
View
A
Retailer 4
-
£2,300 GBP
View
A
Retailer 5
-
£2,300 GBP
View
A
Retailer 6
-
£2,347 GBP
View
A
Retailer 7
-
£2,427 GBP
View
B+
Retailer 8
-
£2,440 GBP
View
Final sale: no returns
B+
Retailer 9
-
£2,541 GBP
View
Retailer 10
-
£2,644 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£2,644 GBP
View
B+
Retailer 12
-
£2,745 GBP
View
Retailer 13
-
£2,777 GBP
View
Price last confirmed 14 days ago
B+
Retailer 14
-
£2,834 GBP
View
B+
Retailer 15
-
£2,875 GBP
View
B+
Retailer 16
-
£2,939 GBP
View
B+
Retailer 17
-
£2,942 GBP
View
B+
Retailer 18
-
£2,942 GBP
View
B+
Retailer 19
-
£3,039 GBP
View
B+
Retailer 20
-
£3,051 GBP
View
Retailer 21
-
£3,126 GBP
View
Price last confirmed 29 days ago
B+
Retailer 22
-
£3,129 GBP
View
B+
Retailer 23
-
£3,202 GBP
View
B+
Retailer 24
-
£3,562 GBP
View
B
Retailer 25
-
£4,217 GBP
View
B
Retailer 26
-
£4,881 GBP
View
Most Expensive
B
NZ Jewellers
e5088513-1b1a-4e49-8f0d-b3674c8ddcc2 · Nov 5
£5,084 GBP
$6,843 USD
View
26 more retailers have this diamond
Prices start from £2,164 GBPSave up to £2,921 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
1.00ct Marquise
£2,164 GBP