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Radiant|Natural|GIA

1.51ct D SI2 Radiant Natural Diamond

GD • D/SI2 • GIA 7463813621

Certificate GIA 7463813621

Diamond specifications and retailer prices

From £4,079 GBP
HK$42,700 HKD
As of October 31, 2026
Save £3,390 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £8,434 GBP at NZ Jewellers · As of September 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 D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7463813621. Listed at 12 retailers as of October 29, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 7463813621
Dimensions7.12 × 5.49 × 4.02 mm
L/W Ratio1.30
Top View
7.12 mm5.49 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 7463813621
Side View
Table 64.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 73.3%

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 31
Current: £4,079 GBP|Low: £4,050 GBP|High: £7,518 GBP|Avg: £5,138 GBP|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 1£4,079 GBP
Retailer 9£4,332 GBP
Retailer 6£4,397 GBP
Retailer 7£4,654 GBP
Retailer 4£4,836 GBP
Retailer 2£5,047 GBP
Retailer 8£5,075 GBP
Retailer 3£5,511 GBP
Retailer 10£6,011 GBP
Retailer 5£7,469 GBP

38 data points across 10 retailers

12 retailers£4,079 GBP to £7,469 GBP

A
Cheapest Retailer
-
£4,079 GBP
HK$42,700 HKD
B+
Retailer 2
-
£4,397 GBP
$5,892 USD
View
Retailer 3
-
£4,654 GBP
$6,236 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
£4,654 GBP
$6,236 USD
View
Final sale: no returns
B+
Retailer 5
-
£4,836 GBP
View
Retailer 6
-
£5,042 GBP
$6,756 USD
View
Price last confirmed 24 days ago
B+
Retailer 7
-
£5,075 GBP
$6,800 USD
View
Retailer 8
-
£5,120 GBP
$6,860 USD
View
Price last confirmed 31 days ago
B+
Retailer 9
-
£5,511 GBP
€7,032 EUR
View
Retailer 10
-
£5,818 GBP
$7,796 USD
View
Price last confirmed 33 days ago
B
Retailer 11
-
£7,469 GBP
View
Most Expensive
NZ Jewellers
d1ac8d21-da3c-435c-a82b-fa68f1d303c9 · Sep 30
£8,434 GBP
$11,300 USD
View
Price last confirmed 31 days ago
11 more retailers have this diamond
Prices start from £4,079 GBPSave up to £3,390 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
£4,079 GBP