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Radiant|Natural|GIA

1.30ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 1385301483

Certificate GIA 1385301483

Diamond specifications and retailer prices

From £3,830 GBP
As of November 5, 2026
Save £1,288 GBP (25%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,118 GBP at Jared · As of November 6, 2026
View at Jared

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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1385301483. Listed at 7 retailers as of November 5, 2026, with prices from £3,830 to £5,118, a £1,288 spread on the same certified stone. Jared lists it at £5,118. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1385301483
Dimensions6.83 × 5.30 × 3.77 mm
L/W Ratio1.29
Culet sizeNone
Top View
6.83 mm5.30 mm1.30 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1385301483
Side View
Table 64.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £5,059 GBP|Low: £3,553 GBP|High: £5,142 GBP|Avg: £4,469 GBP|+0.8%
Retailer 1
Retailer 2
November 5, 2026
Retailer 2£3,909 GBP
Retailer 1£5,059 GBP

38 data points across 2 retailers

7 retailers£3,830 GBP to £5,118 GBP

B
Cheapest Retailer
-
£3,830 GBP
B
Retailer 2
-
£3,909 GBP
View
Final sale: no returns
B
Retailer 3
-
£4,028 GBP
View
C
Retailer 4
-
£4,953 GBP
View
C
Retailer 5
-
£4,953 GBP
View
B
Retailer 6
-
£5,059 GBP
View
Most Expensive
C
Jared
147089071 · Nov 6
£5,118 GBP
$6,850 USD
View
6 more retailers have this diamond
Prices start from £3,830 GBPSave up to £1,288 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
£3,830 GBP