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Princess|Natural|GIA

1.51ct H SI2 Princess Natural Diamond

ID • H/SI2 • GIA 6421235345

Certificate GIA 6421235345

Diamond specifications and retailer prices

From £3,479 GBP
As of November 6, 2026
Save £1,482 GBP (30%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,961 GBP at Jared · As of November 6, 2026
View at Jared

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6421235345. Listed at 9 retailers as of November 6, 2026, with prices from £3,479 to £4,961, a £1,482 spread on the same certified stone. Jared lists it at £4,961. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421235345
Dimensions6.39 × 6.38 × 4.57 mm
L/W Ratio1.00
Top View
6.39 mm6.38 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421235345
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 71.6%

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 6
Current: £4,961 GBP|Low: £3,478 GBP|High: £6,885 GBP|Avg: £4,497 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 20, 2026
Retailer 2£3,479 GBP
Retailer 5£3,679 GBP
Retailer 6£3,688 GBP
Retailer 8£3,920 GBP
Retailer 3£4,225 GBP
Retailer 4£4,498 GBP
Retailer 7£4,524 GBP
Retailer 9£4,804 GBP
Retailer 10£4,804 GBP
Jared£4,961 GBP
Retailer 11£6,885 GBP

3 data points across 11 retailers

9 retailers£3,479 GBP to £4,961 GBP

A
Cheapest Retailer
-
£3,479 GBP
B+
Retailer 2
-
£3,679 GBP
View
B+
Retailer 3
-
£3,688 GBP
View
B+
Retailer 4
-
£3,920 GBP
View
B
Retailer 5
-
£4,498 GBP
View
B
Retailer 6
-
£4,524 GBP
View
B+
Retailer 7
-
£4,804 GBP
View
B+
Retailer 8
-
£4,804 GBP
View
Most Expensive
B
Jared
144697813 · Nov 6
£4,961 GBP
$6,640 USD
View
8 more retailers have this diamond
Prices start from £3,479 GBPSave up to £1,482 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 Princess
£3,479 GBP