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Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 6552489335

Certificate GIA 6552489335

Diamond specifications and retailer prices

From £5,925 GBP
$7,951 USD
As of November 2, 2026
Save £4,747 GBP (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £10,672 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded F 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 6552489335. Listed at 18 retailers as of October 30, 2026, with prices from £5,925 to £10,672, a £4,747 spread on the same certified stone. NZ Jewellers lists it at £10,672. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle49.15°
Pavilion angle35.48°
OriginNatural
Grading LabGIA
CertificateGIA 6552489335
Dimensions7.92 × 5.75 × 3.83 mm
L/W Ratio1.38
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.92 mm5.75 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552489335
Side View
Table 70.0%Crown 49.15°GirdlePavilion 35.48°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £7,163 GBP|Low: £5,925 GBP|High: £10,121 GBP|Avg: £7,534 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
November 2, 2026
Retailer 3£5,925 GBP
Retailer 12£6,403 GBP
Retailer 2£6,456 GBP
Retailer 6£6,999 GBP
Retailer 10£7,031 GBP
Retailer 11£7,044 GBP
Retailer 1£7,163 GBP
Retailer 9£7,342 GBP
Retailer 4£8,003 GBP
Retailer 5£8,065 GBP
Retailer 8£9,406 GBP
Retailer 7£10,000 GBP

41 data points across 12 retailers

18 retailers£5,925 GBP to £10,672 GBP

B+
Cheapest Retailer
-
£5,925 GBP
$7,951 USD
B+
Retailer 2
-
£5,995 GBP
$8,045 USD
View
B
Retailer 3
-
£6,360 GBP
$8,535 USD
View
B
Retailer 4
-
£6,403 GBP
$8,592 USD
View
B
Retailer 5
-
£6,456 GBP
$8,664 USD
View
B
Retailer 6
-
£6,825 GBP
$9,159 USD
View
B
Retailer 7
-
£6,936 GBP
$9,308 USD
View
B+
Retailer 8
-
£6,999 GBP
View
Retailer 9
-
£7,031 GBP
A$14,517 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
£7,044 GBP
$9,452 USD
View
B
Retailer 11
-
£7,163 GBP
View
B
Retailer 12
-
£7,342 GBP
$9,852 USD
View
B
Retailer 13
-
£8,003 GBP
$10,740 USD
View
B
Retailer 14
-
£8,065 GBP
€10,308 EUR
View
Retailer 15
-
£8,428 GBP
$11,310 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
£9,406 GBP
ZAR 203,923 ZAR
View
B
Retailer 17
-
£10,000 GBP
View
Most Expensive
C
NZ Jewellers
2de2635f-1403-4544-9f2b-bc92c675e8ae · Oct 30
£10,672 GBP
$14,321 USD
View
17 more retailers have this diamond
Prices start from £5,925 GBPSave up to £4,747 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
£5,925 GBP