Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

VG • E/SI1 • GIA 6552427355

Certificate GIA 6552427355

Diamond specifications and retailer prices

From £1,620 GBP
As of November 5, 2026
Save £2,082 GBP (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,939 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6552427355. Listed at 23 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6552427355
Dimensions6.17 × 6.23 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.17 mm6.23 mm1.00 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552427355
Side View
Table 58.0%Crown 38.5°Girdle: STK-THKPavilion 40°Culet: NDepth 64.3%

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 5
Current: £2,336 GBP|Low: £1,620 GBP|High: £3,826 GBP|Avg: £2,238 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
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 8£1,620 GBP
Retailer 16£1,683 GBP
Retailer 2£1,801 GBP
Retailer 9£1,825 GBP
Retailer 5£1,849 GBP
Retailer 3£1,857 GBP
Retailer 19£1,864 GBP
Retailer 18£1,980 GBP
Retailer 13£2,123 GBP
Retailer 4£2,296 GBP
Retailer 7£2,296 GBP
Retailer 1£2,336 GBP
Retailer 17£2,370 GBP
Retailer 10£2,415 GBP
Retailer 12£2,431 GBP
Retailer 11£2,624 GBP
Retailer 14£2,710 GBP
Retailer 6£2,719 GBP
Retailer 15£3,702 GBP

24 data points across 19 retailers

23 retailers£1,620 GBP to £3,702 GBP

A
Cheapest Retailer
-
£1,620 GBP
A
Retailer 2
-
£1,683 GBP
View
A
Retailer 3
-
£1,801 GBP
View
A
Retailer 4
-
£1,849 GBP
View
B+
Retailer 5
-
£1,857 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,864 GBP
View
A
Retailer 7
-
£1,980 GBP
View
Retailer 8
-
£2,048 GBP
View
Price last confirmed 28 days ago
Retailer 9
-
£2,048 GBP
View
Price last confirmed 25 days ago
A
Retailer 10
-
£2,123 GBP
View
Retailer 11
-
£2,175 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£2,296 GBP
View
B+
Retailer 13
-
£2,296 GBP
View
B+
Retailer 14
-
£2,336 GBP
View
Retailer 15
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£2,363 GBP
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£2,370 GBP
View
Retailer 17
-
£2,415 GBP
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£2,431 GBP
View
Retailer 19
-
£2,624 GBP
View
Price last confirmed 14 days ago
B+
Retailer 20
-
£2,710 GBP
View
B+
Retailer 21
-
£2,719 GBP
View
B
Retailer 22
-
£3,702 GBP
View
Most Expensive
NZ Jewellers
f2188a06-b75c-43bc-9425-fcedfc2a0820 · Oct 6
£3,939 GBP
$5,301 USD
View
Price last confirmed 31 days ago
22 more retailers have this diamond
Prices start from £1,620 GBPSave up to £2,082 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 Round
£1,620 GBP