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Round|Natural|GIA

1.01ct E SI1 Round Natural Diamond

GD • E/SI1 • GIA 6421402998

Certificate GIA 6421402998

Diamond specifications and retailer prices

From £3,482 GBP
$4,665 USD
As of October 29, 2026
Save £4,100 GBP (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £7,581 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct 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 6421402998. Listed at 23 retailers as of October 29, 2026, with prices from £3,482 to £7,581, a £4,100 spread on the same certified stone. NZ Jewellers lists it at £7,581. 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

1.01
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421402998
Dimensions6.60 × 6.56 × 3.79 mm
L/W Ratio1.01
Top View
6.60 mm6.56 mm1.01 ctE / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6421402998
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £4,392 GBP|Low: £3,158 GBP|High: £6,758 GBP|Avg: £4,682 GBP|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5£3,508 GBP
Retailer 6£3,791 GBP
Retailer 8£4,106 GBP
Retailer 1£4,392 GBP
Retailer 7£4,504 GBP
Retailer 2£4,860 GBP
Retailer 4£5,520 GBP
Retailer 3£6,714 GBP

43 data points across 8 retailers

23 retailers£3,482 GBP to £7,581 GBP

B
Cheapest Retailer
-
£3,482 GBP
$4,665 USD
Retailer 2
-
£3,508 GBP
$4,700 USD
View
Price last confirmed 12 days ago
B
Retailer 3
-
£3,581 GBP
$4,798 USD
View
B
Retailer 4
-
£3,791 GBP
$5,079 USD
View
Final sale: no returns
B
Retailer 5
-
£3,844 GBP
$5,150 USD
View
B
Retailer 6
-
£3,851 GBP
CA$7,167 CAD
View
B
Retailer 7
-
£3,857 GBP
$5,168 USD
View
B
Retailer 8
-
£4,106 GBP
$5,502 USD
View
B
Retailer 9
-
£4,106 GBP
$5,502 USD
View
B
Retailer 10
-
£4,106 GBP
$5,502 USD
View
B
Retailer 11
-
£4,392 GBP
View
B
Retailer 12
-
£4,477 GBP
$5,999 USD
View
Retailer 13
-
£4,504 GBP
A$9,285 AUD
View
Price last confirmed 26 days ago
B
Retailer 14
-
£4,590 GBP
$6,150 USD
View
B
Retailer 15
-
£4,590 GBP
$6,150 USD
View
C
Retailer 16
-
£4,738 GBP
$6,349 USD
View
C
Retailer 17
-
£4,739 GBP
$6,350 USD
View
B
Retailer 18
-
£4,860 GBP
€6,202 EUR
View
Retailer 19
-
£4,999 GBP
$6,698 USD
View
Price last confirmed 7 days ago
B
Retailer 20
-
£5,520 GBP
ZAR 119,476 ZAR
View
B
Retailer 21
-
£6,714 GBP
View
C
Retailer 22
-
£7,375 GBP
View
Most Expensive
C
NZ Jewellers
7dbea5e0-5c78-45b1-ad5f-77723af63666 · Oct 30
£7,581 GBP
$10,158 USD
View
22 more retailers have this diamond
Prices start from £3,482 GBPSave up to £4,100 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.

B
1.01ct Round
£3,482 GBP