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Radiant|Natural|GIA

1.00ct I SI1 Radiant Natural Diamond

FR • I/SI1 • GIA 6442748650

Certificate GIA 6442748650

Diamond specifications and retailer prices

From £1,250 GBP
HK$13,100 HKD
As of November 1, 2026
Save £2,035 GBP (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,285 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct 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 6442748650. Listed at 16 retailers as of October 30, 2026, with prices from £1,250 to £3,285, a £2,035 spread on the same certified stone. NZ Jewellers lists it at £3,285. 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
I
Colour
SI1
Clarity
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6442748650
Dimensions6.62 × 4.66 × 3.47 mm
L/W Ratio1.42
Top View
6.62 mm4.66 mm1.00 ctI / SI1
OriginNatural
CutFair
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6442748650
Side View
Table 61.0%CrownGirdle: ETK-ETKPavilionCulet: NoneDepth 74.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,285 GBP|Low: £1,240 GBP|High: £3,285 GBP|Avg: £1,804 GBP
NZ Jewellers
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
November 2, 2026
Retailer 12£1,250 GBP
Retailer 5£1,420 GBP
Retailer 4£1,449 GBP
Retailer 10£1,533 GBP
Retailer 16£1,572 GBP
Retailer 17£1,572 GBP
Retailer 6£1,591 GBP
Retailer 15£1,644 GBP
Retailer 8£1,673 GBP
Retailer 9£1,675 GBP
Retailer 11£1,724 GBP
Retailer 7£1,774 GBP
Retailer 3£1,813 GBP
Retailer 13£1,931 GBP
Retailer 14£2,146 GBP
Retailer 2£2,753 GBP
NZ Jewellers£3,285 GBP

27 data points across 17 retailers

16 retailers£1,250 GBP to £3,285 GBP

B+
Cheapest Retailer
-
£1,250 GBP
HK$13,100 HKD
B+
Retailer 2
-
£1,420 GBP
$1,905 USD
View
B+
Retailer 3
-
£1,449 GBP
$1,945 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,533 GBP
View
B+
Retailer 5
-
£1,572 GBP
$2,109 USD
View
B+
Retailer 6
-
£1,572 GBP
$2,109 USD
View
B
Retailer 7
-
£1,591 GBP
$2,135 USD
View
B
Retailer 8
-
£1,644 GBP
$2,206 USD
View
B
Retailer 9
-
£1,675 GBP
$2,247 USD
View
B
Retailer 10
-
£1,724 GBP
View
B
Retailer 11
-
£1,774 GBP
$2,380 USD
View
B
Retailer 12
-
£1,813 GBP
$2,433 USD
View
B
Retailer 13
-
£1,931 GBP
ZAR 41,870 ZAR
View
B
Retailer 14
-
£2,146 GBP
€2,743 EUR
View
C
Retailer 15
-
£2,753 GBP
View
Most Expensive
C
NZ Jewellers
15ca1c56-9c97-40c4-b5eb-041d266203a8 · Oct 30
£3,285 GBP
$4,408 USD
View
15 more retailers have this diamond
Prices start from £1,250 GBPSave up to £2,035 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+
1.00ct Radiant
£1,250 GBP