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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2245042567

Certificate GIA 2245042567

Diamond specifications and retailer prices

From £1,605 GBP
HK$16,700 HKD
As of October 29, 2026
Save £2,982 GBP (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,587 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245042567. Listed at 12 retailers as of October 29, 2026, with prices from £1,605 to £4,587, a £2,982 spread on the same certified stone. NZ Jewellers lists it at £4,587. 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2245042567
Dimensions6.49 × 6.54 × 4.08 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
6.49 mm6.54 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2245042567
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

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 29
Current: £4,587 GBP|Low: £1,605 GBP|High: £4,702 GBP|Avg: £2,567 GBP|+15.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10£1,605 GBP
Retailer 6£1,918 GBP
Retailer 3£2,001 GBP
Retailer 2£2,118 GBP
Retailer 9£2,194 GBP
Retailer 12£2,250 GBP
Retailer 8£2,279 GBP
Retailer 11£2,383 GBP
Retailer 5£2,578 GBP
Retailer 4£3,367 GBP
Retailer 7£3,690 GBP
NZ Jewellers£4,587 GBP

28 data points across 12 retailers

12 retailers£1,605 GBP to £4,587 GBP

A
Cheapest Retailer
-
£1,605 GBP
HK$16,700 HKD
A
Retailer 2
-
£1,918 GBP
€2,433 EUR
View
A
Retailer 3
-
£2,001 GBP
$2,665 USD
View
A
Retailer 4
-
£2,118 GBP
View
A
Retailer 5
-
£2,194 GBP
$2,922 USD
View
A
Retailer 6
-
£2,250 GBP
SGD 4,049 SGD
View
A
Retailer 7
-
£2,279 GBP
$3,035 USD
View
A
Retailer 8
-
£2,383 GBP
$3,174 USD
View
A
Retailer 9
-
£2,578 GBP
€3,269 EUR
View
Retailer 10
-
£3,367 GBP
€4,270 EUR
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£3,690 GBP
View
Most Expensive
B
NZ Jewellers
4708152d-5e3d-4a33-9040-4d3188f0d887 · Oct 30
£4,587 GBP
$6,109 USD
View
11 more retailers have this diamond
Prices start from £1,605 GBPSave up to £2,982 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
1.09ct Round
£1,605 GBP