Radiant|Natural|GIA

1.01ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 6421519551

Certificate GIA 6421519551

Diamond specifications and retailer prices

From £2,604 GBP
As of November 5, 2026
Save £2,660 GBP (51%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £5,759 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural radiant diamond

This 1.01ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6421519551. Listed at 23 retailers as of November 2, 2026, with a 102% 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

1.01
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421519551
Dimensions6.67 × 5.29 × 3.50 mm
L/W Ratio1.26
Top View
6.67 mm5.29 mm1.01 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6421519551
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.0%

Caratlytics Score

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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: Nov 5
Current: £5,759 GBP|Low: £2,304 GBP|High: £5,759 GBP|Avg: £3,705 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 8£2,604 GBP
Retailer 9£2,764 GBP
Retailer 3£2,995 GBP
Retailer 11£2,995 GBP
Retailer 2£3,349 GBP
Retailer 5£3,517 GBP
Retailer 10£3,526 GBP
Retailer 4£3,694 GBP
Retailer 6£4,033 GBP
Retailer 7£5,265 GBP
NZ Jewellers£5,759 GBP

46 data points across 11 retailers

23 retailers£2,604 GBP to £5,265 GBP

Retailer 1
-
£2,604 GBP
Price last confirmed 10 days ago
B
Retailer 2
-
£2,604 GBP
View
B
Retailer 3
-
£2,636 GBP
View
B
Retailer 4
-
£2,764 GBP
View
Final sale: no returns
B
Retailer 5
-
£2,813 GBP
View
B
Retailer 6
-
£2,847 GBP
View
B
Retailer 7
-
£2,858 GBP
View
B
Retailer 8
-
£2,995 GBP
View
B
Retailer 9
-
£2,995 GBP
View
Retailer 10
-
£2,995 GBP
View
Price last confirmed 9 days ago
B
Retailer 11
-
£3,260 GBP
View
B
Retailer 12
-
£3,349 GBP
View
C
Retailer 13
-
£3,377 GBP
View
C
Retailer 14
-
£3,377 GBP
View
C
Retailer 15
-
£3,455 GBP
View
C
Retailer 16
-
£3,489 GBP
View
B
Retailer 17
-
£3,517 GBP
View
Retailer 18
-
£3,526 GBP
View
Price last confirmed 29 days ago
C
Retailer 19
-
£3,694 GBP
View
Retailer 20
-
£3,739 GBP
View
Price last confirmed 15 days ago
B
Retailer 21
-
£4,033 GBP
View
B
Retailer 22
-
£5,265 GBP
View
Most Expensive
NZ Jewellers
cd392a4b-df26-4a8c-bab3-074fc4e96e28 · Nov 5
£5,759 GBP
$7,709 USD
View
Price under review
22 more retailers have this diamond
Prices start from £2,604 GBPSave up to £2,660 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 Radiant
£2,604 GBP