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Princess|Natural|GIA

1.51ct H SI2 Princess Natural Diamond

EX • H/SI2 • GIA 3565414270

Certificate GIA 3565414270

Diamond specifications and retailer prices

From £2,056 GBP
As of November 4, 2026
Save £1,734 GBP (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,790 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 3565414270. Listed at 13 retailers as of November 4, 2026, with prices from £2,056 to £3,790, a £1,734 spread on the same certified stone. Helzberg Diamonds lists it at £3,790. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle24.75°
Pavilion angle39.58°
OriginNatural
Grading LabGIA
CertificateGIA 3565414270
Dimensions6.34 × 6.25 × 4.44 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.34 mm6.25 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3565414270
Side View
Table 73.0%Crown 24.75°Girdle: MED-THKPavilion 39.58°Culet: NoneDepth 71.0%

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 4
Current: £3,790 GBP|Low: £2,056 GBP|High: £4,161 GBP|Avg: £2,844 GBP|-8.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 3£2,056 GBP
Retailer 4£2,245 GBP
Retailer 10£2,288 GBP
Retailer 9£2,313 GBP
Retailer 13£2,400 GBP
Retailer 5£2,408 GBP
Retailer 2£2,417 GBP
Retailer 11£2,567 GBP
Retailer 12£2,635 GBP
Retailer 8£2,651 GBP
Retailer 7£3,111 GBP
Retailer 6£3,712 GBP
Helzberg Diamonds£3,790 GBP

33 data points across 13 retailers

13 retailers£2,056 GBP to £3,790 GBP

A
Cheapest Retailer
-
£2,056 GBP
A
Retailer 2
-
£2,245 GBP
View
A
Retailer 3
-
£2,288 GBP
View
A
Retailer 4
-
£2,313 GBP
View
A
Retailer 5
-
£2,400 GBP
View
A
Retailer 6
-
£2,408 GBP
View
A
Retailer 7
-
£2,417 GBP
View
A
Retailer 8
-
£2,567 GBP
View
A
Retailer 9
-
£2,635 GBP
View
A
Retailer 10
-
£2,651 GBP
View
A
Retailer 11
-
£3,111 GBP
View
B+
Retailer 12
-
£3,712 GBP
View
Most Expensive
B+
Helzberg Diamonds
XZRJLMLKHKING · Nov 6
£3,790 GBP
$5,073 USD
View
12 more retailers have this diamond
Prices start from £2,056 GBPSave up to £1,734 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
£2,056 GBP