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Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 6552262434

Certificate GIA 6552262434

Diamond specifications and retailer prices

From £4,139 GBP
SGD 7,495 SGD
As of November 1, 2026
Save £3,596 GBP (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,736 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552262434. Listed at 12 retailers as of October 26, 2026, with prices from £4,139 to £7,736, a £3,596 spread on the same certified stone. Wholesale Diamonds Direct lists it at £7,736. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552262434
Dimensions7.40 × 5.88 × 4.04 mm
L/W Ratio1.26
Culet sizeNone
Top View
7.40 mm5.88 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552262434
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.8%

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 1
Current: £5,867 GBP|Low: £4,139 GBP|High: £7,884 GBP|Avg: £5,417 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 1, 2026
Retailer 8£4,139 GBP
Retailer 9£4,251 GBP
Retailer 11£4,308 GBP
Retailer 6£4,379 GBP
Retailer 7£4,479 GBP
Retailer 4£4,683 GBP
Retailer 3£5,215 GBP
Retailer 2£5,242 GBP
Retailer 5£5,257 GBP
Retailer 1£5,867 GBP
Retailer 10£7,132 GBP
Wholesale Diamonds Direct£7,736 GBP

39 data points across 12 retailers

12 retailers£4,139 GBP to £7,736 GBP

A
Cheapest Retailer
-
£4,139 GBP
SGD 7,495 SGD
A
Retailer 2
-
£4,251 GBP
$5,696 USD
View
A
Retailer 3
-
£4,308 GBP
SGD 7,800 SGD
View
A
Retailer 4
-
£4,379 GBP
$5,868 USD
View
A
Retailer 5
-
£4,479 GBP
$6,002 USD
View
A
Retailer 6
-
£4,683 GBP
View
B+
Retailer 7
-
£5,215 GBP
$6,988 USD
View
B+
Retailer 8
-
£5,242 GBP
$7,024 USD
View
A
Retailer 9
-
£5,257 GBP
€6,708 EUR
View
B+
Retailer 10
-
£5,867 GBP
$7,861 USD
View
B
Retailer 11
-
£7,132 GBP
$9,556 USD
View
Most Expensive
B
Wholesale Diamonds Direct
584156463 · Oct 26
£7,736 GBP
$10,365 USD
View
11 more retailers have this diamond
Prices start from £4,139 GBPSave up to £3,596 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
£4,139 GBP