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Radiant|Natural|GIA

1.51ct K SI1 Radiant Natural Diamond

VG • K/SI1 • GIA 3545914037

Certificate GIA 3545914037

Diamond specifications and retailer prices

From £1,728 GBP
As of November 5, 2026
Save £1,393 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,121 GBP at Wholesale Diamonds Direct · As of November 6, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3545914037. Listed at 12 retailers as of November 5, 2026, with prices from £1,728 to £3,121, a £1,393 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,121. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545914037
Dimensions7.44 × 5.89 × 3.96 mm
L/W Ratio1.26
Top View
7.44 mm5.89 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545914037
Side View
Table 69.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 67.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,996 GBP|Low: £1,718 GBP|High: £3,180 GBP|Avg: £2,319 GBP|-0.8%
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 7, 2026
Retailer 4£1,728 GBP
Retailer 8£1,835 GBP
Retailer 9£1,854 GBP
Retailer 7£1,866 GBP
Retailer 1£1,996 GBP
Retailer 3£2,033 GBP
Retailer 11£2,193 GBP
Retailer 2£2,282 GBP
Retailer 5£2,341 GBP
Retailer 6£2,399 GBP
Retailer 10£2,845 GBP
Wholesale Diamonds Direct£3,121 GBP

44 data points across 12 retailers

12 retailers£1,728 GBP to £3,121 GBP

A
Cheapest Retailer
-
£1,728 GBP
A
Retailer 2
-
£1,835 GBP
View
A
Retailer 3
-
£1,854 GBP
View
A
Retailer 4
-
£1,866 GBP
View
A
Retailer 5
-
£1,996 GBP
View
B+
Retailer 6
-
£2,033 GBP
View
B+
Retailer 7
-
£2,193 GBP
View
B+
Retailer 8
-
£2,282 GBP
View
A
Retailer 9
-
£2,341 GBP
View
A
Retailer 10
-
£2,399 GBP
View
B+
Retailer 11
-
£2,845 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
584156308 · Nov 6
£3,121 GBP
$4,177 USD
View
11 more retailers have this diamond
Prices start from £1,728 GBPSave up to £1,393 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
£1,728 GBP