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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 6515595253

Certificate GIA 6515595253

Diamond specifications and retailer prices

From £4,864 GBP
As of November 6, 2026
Save £1,571 GBP (24%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,435 GBP at Yorxs · As of November 6, 2026
View at Yorxs

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6515595253. Listed at 10 retailers as of November 6, 2026, with prices from £4,864 to £6,435, a £1,571 spread on the same certified stone. Yorxs lists it at £6,435. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.81°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 6515595253
Dimensions7.39 × 5.70 × 3.83 mm
L/W Ratio1.30
Top View
7.39 mm5.70 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515595253
Side View
Table 67.0%Crown 44.81°Girdle: ThickPavilion 30.09°Culet: NoneDepth 67.2%

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: Nov 6
Current: £5,584 GBP|Low: £4,864 GBP|High: £8,352 GBP|Avg: £5,878 GBP|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
November 7, 2026
Retailer 12£4,864 GBP
Retailer 10£4,969 GBP
Retailer 5£5,127 GBP
Retailer 7£5,127 GBP
Retailer 11£5,522 GBP
Retailer 1£5,584 GBP
Retailer 8£5,718 GBP
Retailer 3£5,992 GBP
Retailer 4£5,992 GBP
Retailer 6£6,030 GBP
Retailer 2£6,186 GBP
Yorxs£6,435 GBP
Retailer 9£8,330 GBP

15 data points across 13 retailers

10 retailers£4,864 GBP to £6,435 GBP

A
Cheapest Retailer
-
£4,864 GBP
A
Retailer 2
-
£5,127 GBP
View
A
Retailer 3
-
£5,127 GBP
View
Retailer 4
-
£5,522 GBP
View
Price last confirmed 29 days ago
A
Retailer 5
-
£5,584 GBP
View
B+
Retailer 6
-
£5,718 GBP
View
B+
Retailer 7
-
£5,992 GBP
View
B+
Retailer 8
-
£6,030 GBP
View
B+
Retailer 9
-
£6,186 GBP
View
Most Expensive
B+
Yorxs
5290575B9 · Nov 6
£6,435 GBP
€8,203 EUR
View
9 more retailers have this diamond
Prices start from £4,864 GBPSave up to £1,571 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
£4,864 GBP