Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

GD • E/SI1 • GIA 6392299025

Certificate GIA 6392299025

Diamond specifications and retailer prices

From £1,567 GBP
As of October 31, 2026
Save £2,997 GBP (66%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £4,564 GBP at NZ Jewellers · As of November 5, 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 standard cut grade and certified by GIA 6392299025. Listed at 24 retailers as of October 31, 2026, with prices from £1,567 to £4,564, a £2,997 spread on the same certified stone. NZ Jewellers lists it at £4,564. 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
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 6392299025
Dimensions6.18 × 6.14 × 4.04 mm
L/W Ratio1.01
Top View
6.18 mm6.14 mm1.00 ctE / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6392299025
Side View
Table 58.0%Crown 38.5°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 65.5%

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 31
Current: £2,211 GBP|Low: £1,563 GBP|High: £3,670 GBP|Avg: £2,221 GBP
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 10£1,567 GBP
Retailer 11£1,588 GBP
Retailer 2£1,955 GBP
Retailer 9£1,975 GBP
Retailer 3£2,015 GBP
Retailer 5£2,087 GBP
Retailer 1£2,211 GBP
Retailer 4£2,297 GBP
Retailer 8£2,435 GBP
Retailer 6£2,664 GBP
Retailer 7£3,641 GBP

31 data points across 11 retailers

24 retailers£1,567 GBP to £4,564 GBP

A
Cheapest Retailer
-
£1,567 GBP
A
Retailer 2
-
£1,588 GBP
View
B+
Retailer 3
-
£1,881 GBP
View
B+
Retailer 4
-
£1,955 GBP
View
B+
Retailer 5
-
£1,975 GBP
View
B+
Retailer 6
-
£2,015 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,061 GBP
View
B+
Retailer 8
-
£2,087 GBP
View
B+
Retailer 9
-
£2,132 GBP
View
B+
Retailer 10
-
£2,183 GBP
View
Retailer 11
-
£2,183 GBP
View
Price last confirmed 8 days ago
Retailer 12
-
£2,196 GBP
View
Price last confirmed 109 days ago
B+
Retailer 13
-
£2,211 GBP
View
B+
Retailer 14
-
£2,267 GBP
View
B+
Retailer 15
-
£2,288 GBP
View
B+
Retailer 16
-
£2,297 GBP
View
B+
Retailer 17
-
£2,435 GBP
View
Retailer 18
-
£2,455 GBP
View
Price last confirmed 33 days ago
B+
Retailer 19
-
£2,519 GBP
View
B
Retailer 20
-
£2,664 GBP
View
B
Retailer 21
-
£3,641 GBP
View
B
Retailer 22
-
£4,114 GBP
View
C
Retailer 23
-
£4,301 GBP
View
Most Expensive
C
NZ Jewellers
21b345b7-76c4-4d88-b70b-daf06d2a06a4 · Nov 5
£4,564 GBP
$6,143 USD
View
23 more retailers have this diamond
Prices start from £1,567 GBPSave up to £2,997 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
£1,567 GBP