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Radiant|Natural|GIA

1.51ct G IF Radiant Natural Diamond

VG • G/IF • GIA 6555666604

Certificate GIA 6555666604

Diamond specifications and retailer prices

From £6,568 GBP
As of November 5, 2026
Save £1,183 GBP (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £7,751 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555666604. Listed at 4 retailers as of November 5, 2026, with prices from £6,568 to £7,751, a £1,183 spread on the same certified stone. Blue Nile lists it at £7,751. 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
G
Colour
IF
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.6°
Pavilion angle56.2°
OriginNatural
Grading LabGIA
CertificateGIA 6555666604
Dimensions7.66 × 5.97 × 4.08 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizeNone
Top View
7.66 mm5.97 mm1.51 ctG / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555666604
Side View
Table 67.0%Crown 46.6°Girdle: MED-STKPavilion 56.2°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £7,751 GBP|Low: £6,516 GBP|High: £7,919 GBP|Avg: £6,953 GBP|-2.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 4£6,568 GBP
Retailer 2£6,625 GBP
Retailer 3£6,799 GBP
Blue Nile£7,751 GBP

36 data points across 4 retailers

4 retailers£6,568 GBP to £7,751 GBP

A
Cheapest Retailer
-
£6,568 GBP
A
Retailer 2
-
£6,625 GBP
View
A
Retailer 3
-
£6,799 GBP
View
Most Expensive
A
Blue Nile
29602006 · Nov 5
£7,751 GBP
$10,375 USD
View
3 more retailers have this diamond
Prices start from £6,568 GBPSave up to £1,183 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
£6,568 GBP