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Radiant|Natural|GIA

1.30ct K SI1 Radiant Natural Diamond

GD • K/SI1 • GIA 3145961771

Certificate GIA 3145961771

Diamond specifications and retailer prices

From £2,615 GBP
As of November 4, 2026
Save £3,253 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £5,868 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural radiant diamond

This 1.3ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 3145961771. Listed at 16 retailers as of November 4, 2026, with prices from £2,615 to £5,868, a £3,253 spread on the same certified stone. NZ Jewellers lists it at £5,868. 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

1.30
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3145961771
Dimensions7.07 × 5.85 × 3.79 mm
L/W Ratio1.21
Top View
7.07 mm5.85 mm1.30 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3145961771
Side View
Table 70.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 64.8%

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 4
Current: £5,868 GBP|Low: £2,615 GBP|High: £5,868 GBP|Avg: £3,819 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6£2,615 GBP
Retailer 7£3,051 GBP
Retailer 8£3,051 GBP
Retailer 9£3,051 GBP
Retailer 2£3,412 GBP
Retailer 3£3,582 GBP
Retailer 4£4,109 GBP
Retailer 5£5,350 GBP
NZ Jewellers£5,868 GBP

44 data points across 9 retailers

16 retailers£2,615 GBP to £5,868 GBP

B+
Cheapest Retailer
-
£2,615 GBP
B+
Retailer 2
-
£2,654 GBP
View
B+
Retailer 3
-
£2,684 GBP
View
B
Retailer 4
-
£2,866 GBP
View
B
Retailer 5
-
£2,906 GBP
View
Retailer 6
-
£3,051 GBP
View
Price last confirmed 9 days ago
B
Retailer 7
-
£3,051 GBP
View
B
Retailer 8
-
£3,051 GBP
View
B
Retailer 9
-
£3,322 GBP
View
B
Retailer 10
-
£3,412 GBP
View
B
Retailer 11
-
£3,521 GBP
View
B
Retailer 12
-
£3,582 GBP
View
Retailer 13
-
£3,810 GBP
View
Price last confirmed 15 days ago
C
Retailer 14
-
£4,109 GBP
View
C
Retailer 15
-
£5,350 GBP
View
Most Expensive
C
NZ Jewellers
83b19d72-471c-404d-b302-2a75dd820de4 · Nov 5
£5,868 GBP
$7,854 USD
View
15 more retailers have this diamond
Prices start from £2,615 GBPSave up to £3,253 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+
1.30ct Radiant
£2,615 GBP