CaratHunter
Plans
Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1548772947

Certificate GIA 1548772947

Diamond specifications and retailer prices

From £3,235 GBP
$4,341 USD
As of November 1, 2026
Save £3,287 GBP (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,522 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548772947. Listed at 14 retailers as of November 1, 2026, with prices from £3,235 to £6,522, a £3,287 spread on the same certified stone. MOH London lists it at £6,522. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle49.57°
Pavilion angle35.79°
OriginNatural
Grading LabGIA
CertificateGIA 1548772947
Dimensions7.81 × 5.66 × 3.82 mm
L/W Ratio1.38
Girdle conditionVery Thick
Key to symbols
Knot, Needle, Pinpoint
Top View
7.81 mm5.66 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548772947
Side View
Table 69.0%Crown 49.57°Girdle: THK-VTKPavilion 35.79°Culet: NoneDepth 67.5%

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: £6,522 GBP|Low: £3,491 GBP|High: £6,600 GBP|Avg: £4,443 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7£3,491 GBP
Retailer 6£3,903 GBP
Retailer 2£3,940 GBP
Retailer 3£3,995 GBP
Retailer 5£4,128 GBP
Retailer 4£5,033 GBP
MOH London£6,522 GBP

44 data points across 7 retailers

14 retailers£3,235 GBP to £6,522 GBP

B+
Cheapest Retailer
-
£3,235 GBP
$4,341 USD
B+
Retailer 2
-
£3,452 GBP
$4,633 USD
View
B+
Retailer 3
-
£3,491 GBP
$4,685 USD
View
B
Retailer 4
-
£3,903 GBP
$5,238 USD
View
B
Retailer 5
-
£3,926 GBP
$5,269 USD
View
B
Retailer 6
-
£3,940 GBP
View
B+
Retailer 7
-
£3,995 GBP
View
Retailer 8
-
£4,128 GBP
A$8,522 AUD
View
Price last confirmed 23 days ago
B
Retailer 9
-
£4,158 GBP
$5,580 USD
View
B
Retailer 10
-
£4,158 GBP
$5,580 USD
View
B
Retailer 11
-
£4,292 GBP
$5,760 USD
View
Retailer 12
-
£4,518 GBP
$6,063 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
£5,033 GBP
ZAR 109,114 ZAR
View
Most Expensive
B
MOH London
1725D7B22 · Nov 1
£6,522 GBP
View
13 more retailers have this diamond
Prices start from £3,235 GBPSave up to £3,287 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+
1.51ct Radiant
£3,235 GBP