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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 7456427957

Certificate GIA 7456427957

Diamond specifications and retailer prices

From £1,938 GBP
As of November 6, 2026
Save £1,552 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,490 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7456427957. Listed at 15 retailers as of November 6, 2026, with prices from £1,938 to £3,490, a £1,552 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,490. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7456427957
Dimensions6.88 × 5.59 × 3.90 mm
L/W Ratio1.23
Top View
6.88 mm5.59 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7456427957
Side View
Table 70.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.9%

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 6
Current: £2,380 GBP|Low: £1,586 GBP|High: £3,632 GBP|Avg: £2,353 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Wholesale Diamonds Direct
November 6, 2026
Retailer 4£1,855 GBP
Retailer 12£1,864 GBP
Retailer 11£1,903 GBP
Retailer 5£1,938 GBP
Retailer 14£1,938 GBP
Retailer 3£1,963 GBP
Retailer 15£2,169 GBP
Retailer 2£2,191 GBP
Retailer 17£2,211 GBP
Retailer 7£2,228 GBP
Retailer 13£2,366 GBP
Retailer 1£2,380 GBP
Retailer 16£2,419 GBP
Retailer 6£2,427 GBP
Retailer 10£2,654 GBP
Retailer 9£2,974 GBP
Wholesale Diamonds Direct£3,490 GBP
Retailer 8£3,632 GBP

19 data points across 18 retailers

15 retailers£1,938 GBP to £3,490 GBP

Retailer 1
-
£1,855 GBP
Price last confirmed 10 days ago
Retailer 2
-
£1,864 GBP
View
Price last confirmed 17 days ago
Retailer 3
-
£1,903 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£1,938 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
£1,938 GBP
View
Retailer 6
-
£1,963 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£2,169 GBP
View
Retailer 8
-
£2,211 GBP
View
Price last confirmed 13 days ago
Retailer 9
-
£2,228 GBP
View
Price last confirmed 15 days ago
Retailer 10
-
£2,366 GBP
View
Price last confirmed 11 days ago
B+
Retailer 11
-
£2,380 GBP
View
B+
Retailer 12
-
£2,419 GBP
View
Retailer 13
-
£2,528 GBP
View
Price last confirmed 62 days ago
B+
Retailer 14
-
£2,654 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
630825913 · Nov 6
£3,490 GBP
$4,671 USD
View
14 more retailers have this diamond
Prices start from £1,938 GBPSave up to £1,552 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
£1,938 GBP