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Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6425908649

Certificate GIA 6425908649

Diamond specifications and retailer prices

From £1,853 GBP
HK$19,400 HKD
As of October 30, 2026
Save £2,789 GBP (60%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,642 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425908649. Listed at 19 retailers as of October 29, 2026, with prices from £1,853 to £4,642, a £2,789 spread on the same certified stone. Diamond Quarter lists it at £4,642. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425908649
Dimensions6.51 × 6.47 × 3.87 mm
L/W Ratio1.01
Top View
6.51 mm6.47 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425908649
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.6%

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 30
Current: £2,726 GBP|Low: £1,855 GBP|High: £4,316 GBP|Avg: £2,570 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 2£1,867 GBP
Retailer 3£2,258 GBP
Retailer 8£2,264 GBP
Retailer 6£2,292 GBP
Retailer 7£2,317 GBP
Retailer 9£2,354 GBP
Retailer 4£2,649 GBP
Retailer 1£2,726 GBP
Retailer 5£4,288 GBP

32 data points across 9 retailers

19 retailers£1,853 GBP to £4,642 GBP

Retailer 1
-
£1,751 GBP
$2,346 USD
Price last confirmed 17 days ago
A
Retailer 2
-
£1,853 GBP
HK$19,400 HKD
View
A
Retailer 3
-
£1,867 GBP
₹238,187 INR
View
A
Retailer 4
-
£2,178 GBP
$2,918 USD
View
A
Retailer 5
-
£2,258 GBP
View
B+
Retailer 6
-
£2,264 GBP
$3,034 USD
View
A
Retailer 7
-
£2,292 GBP
$3,071 USD
View
Retailer 8
-
£2,317 GBP
$3,105 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£2,354 GBP
$3,154 USD
View
Final sale: no returns
B+
Retailer 10
-
£2,550 GBP
$3,417 USD
View
B+
Retailer 11
-
£2,607 GBP
SGD 4,720 SGD
View
B+
Retailer 12
-
£2,649 GBP
$3,549 USD
View
B+
Retailer 13
-
£2,649 GBP
View
B+
Retailer 14
-
£2,658 GBP
$3,562 USD
View
B+
Retailer 15
-
£2,726 GBP
€3,478 EUR
View
B
Retailer 16
-
£3,343 GBP
$4,479 USD
View
B
Retailer 17
-
£4,288 GBP
View
B
Retailer 18
-
£4,443 GBP
$5,953 USD
View
Most Expensive
B
Diamond Quarter
1.0SI2E6449B9CDN · Oct 29
£4,642 GBP
View
18 more retailers have this diamond
Prices start from £1,853 GBPSave up to £2,789 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
£1,853 GBP