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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 2221285699

Certificate GIA 2221285699

Diamond specifications and retailer prices

From £7,109 GBP
A$14,564 AUD
As of October 29, 2026
Save £1,767 GBP (20%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £8,876 GBP at Zales · As of October 30, 2026
View at Zales

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 2221285699. Listed at 6 retailers as of October 29, 2026, with prices from £7,109 to £8,876, a £1,767 spread on the same certified stone. Zales lists it at £8,876. 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
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2221285699
Dimensions7.30 × 5.84 × 4.00 mm
L/W Ratio1.25
Top View
7.30 mm5.84 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2221285699
Side View
Table 71.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £8,797 GBP|Low: £6,637 GBP|High: £8,851 GBP|Avg: £7,869 GBP|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4£7,221 GBP
Retailer 2£7,301 GBP
Retailer 3£8,413 GBP
Retailer 1£8,797 GBP

35 data points across 4 retailers

6 retailers£7,109 GBP to £8,876 GBP

B
Cheapest Retailer
-
£7,109 GBP
A$14,564 AUD
B
Retailer 2
-
£7,221 GBP
$9,616 USD
View
B
Retailer 3
-
£7,301 GBP
$9,722 USD
View
Final sale: no returns
B
Retailer 4
-
£8,413 GBP
$11,203 USD
View
B
Retailer 5
-
£8,797 GBP
View
Most Expensive
B
Zales
517207766 · Oct 30
£8,876 GBP
$11,820 USD
View
5 more retailers have this diamond
Prices start from £7,109 GBPSave up to £1,767 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
£7,109 GBP