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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1543922780

Certificate GIA 1543922780

Diamond specifications and retailer prices

From £1,440 GBP
SGD 2,607 SGD
As of October 31, 2026
Save £1,491 GBP (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,931 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 1543922780. Listed at 10 retailers as of October 26, 2026, with prices from £1,440 to £2,931, a £1,491 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,931. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543922780
Dimensions7.68 × 5.81 × 3.94 mm
L/W Ratio1.32
Culet sizeNone
Top View
7.68 mm5.81 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543922780
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,856 GBP|Low: £1,440 GBP|High: £3,100 GBP|Avg: £2,084 GBP|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 2, 2026
Retailer 6£1,440 GBP
Retailer 3£1,703 GBP
Retailer 2£1,717 GBP
Retailer 1£1,856 GBP
Retailer 9£1,871 GBP
Retailer 7£2,026 GBP
Retailer 4£2,037 GBP
Retailer 8£2,126 GBP
Retailer 5£2,617 GBP
Wholesale Diamonds Direct£2,931 GBP

36 data points across 10 retailers

10 retailers£1,440 GBP to £2,931 GBP

A
Cheapest Retailer
-
£1,440 GBP
SGD 2,607 SGD
A
Retailer 2
-
£1,703 GBP
$2,282 USD
View
A
Retailer 3
-
£1,717 GBP
$2,301 USD
View
A
Retailer 4
-
£1,856 GBP
View
A
Retailer 5
-
£1,871 GBP
SGD 3,387 SGD
View
A
Retailer 6
-
£2,026 GBP
$2,714 USD
View
A
Retailer 7
-
£2,037 GBP
$2,730 USD
View
A
Retailer 8
-
£2,126 GBP
$2,849 USD
View
A
Retailer 9
-
£2,617 GBP
$3,507 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
525257240 · Oct 26
£2,931 GBP
$3,927 USD
View
9 more retailers have this diamond
Prices start from £1,440 GBPSave up to £1,491 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.

A
1.51ct Radiant
£1,440 GBP