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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 5556481538

Certificate GIA 5556481538

Diamond specifications and retailer prices

From £3,762 GBP
$5,010 USD
As of October 29, 2026
Save £3,101 GBP (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,863 GBP at Wholesale Diamonds Direct · As of October 27, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5556481538. Listed at 10 retailers as of October 27, 2026, with prices from £3,762 to £6,863, a £3,101 spread on the same certified stone. Wholesale Diamonds Direct lists it at £6,863. 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

1.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556481538
Dimensions7.50 × 5.93 × 4.08 mm
L/W Ratio1.26
Culet sizeNone
Top View
7.50 mm5.93 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556481538
Side View
Table 69.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 68.8%

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 29
Current: £5,188 GBP|Low: £3,762 GBP|High: £6,863 GBP|Avg: £4,757 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
October 30, 2026
Retailer 9£3,762 GBP
Retailer 4£3,810 GBP
Retailer 8£3,961 GBP
Retailer 7£4,082 GBP
Retailer 2£4,223 GBP
Retailer 5£4,653 GBP
Retailer 3£4,829 GBP
Retailer 1£5,188 GBP
Retailer 6£6,181 GBP
Wholesale Diamonds Direct£6,863 GBP

46 data points across 10 retailers

10 retailers£3,762 GBP to £6,863 GBP

A
Cheapest Retailer
-
£3,762 GBP
$5,010 USD
A
Retailer 2
-
£3,810 GBP
SGD 6,856 SGD
View
A
Retailer 3
-
£3,961 GBP
$5,275 USD
View
A
Retailer 4
-
£4,082 GBP
SGD 7,345 SGD
View
A
Retailer 5
-
£4,223 GBP
View
A
Retailer 6
-
£4,653 GBP
$6,196 USD
View
A
Retailer 7
-
£4,829 GBP
€6,125 EUR
View
B+
Retailer 8
-
£5,188 GBP
$6,909 USD
View
B+
Retailer 9
-
£6,307 GBP
$8,399 USD
View
Most Expensive
B
Wholesale Diamonds Direct
471310083 · Oct 27
£6,863 GBP
$9,139 USD
View
9 more retailers have this diamond
Prices start from £3,762 GBPSave up to £3,101 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
£3,762 GBP