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Princess|Natural|GIA

1.51ct J SI2 Princess Natural Diamond

GD • J/SI2 • GIA 1427009335

Certificate GIA 1427009335

Diamond specifications and retailer prices

From £2,540 GBP
As of November 6, 2026
Save £3,995 GBP (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,535 GBP at Adiamor · As of November 5, 2026
View at Adiamor

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1427009335. Listed at 18 retailers as of November 5, 2026, with prices from £2,540 to £6,535, a £3,995 spread on the same certified stone. Adiamor lists it at £6,535. 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
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1427009335
Dimensions6.32 × 6.28 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Indented Natural
Top View
6.32 mm6.28 mm1.51 ctJ / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1427009335
Side View
Table 74.0%CrownGirdle: ThickPavilionCulet: NoneDepth 73.1%

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: £2,540 GBP|Low: £2,540 GBP|High: £5,817 GBP|Avg: £3,519 GBP|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1£2,540 GBP
Retailer 7£2,558 GBP
Retailer 4£2,797 GBP
Retailer 8£3,066 GBP
Retailer 6£3,121 GBP
Retailer 9£3,253 GBP
Retailer 3£3,470 GBP
Retailer 2£3,966 GBP
Retailer 5£5,597 GBP

36 data points across 9 retailers

18 retailers£2,540 GBP to £6,535 GBP

B+
Cheapest Retailer
-
£2,540 GBP
B+
Retailer 2
-
£2,558 GBP
View
B
Retailer 3
-
£2,797 GBP
View
B
Retailer 4
-
£3,036 GBP
View
B
Retailer 5
-
£3,066 GBP
View
B
Retailer 6
-
£3,121 GBP
View
B
Retailer 7
-
£3,252 GBP
View
B
Retailer 8
-
£3,253 GBP
View
Final sale: no returns
B
Retailer 9
-
£3,470 GBP
View
B
Retailer 10
-
£3,524 GBP
View
Retailer 11
-
£3,524 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
£3,524 GBP
View
B
Retailer 13
-
£3,635 GBP
View
B
Retailer 14
-
£3,966 GBP
View
C
Retailer 15
-
£4,066 GBP
View
C
Retailer 16
-
£5,597 GBP
View
C
Retailer 17
-
£6,139 GBP
View
Most Expensive
C
Adiamor
D-64679085 · Nov 5
£6,535 GBP
$8,795 USD
View
17 more retailers have this diamond
Prices start from £2,540 GBPSave up to £3,995 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 Princess
£2,540 GBP