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Princess|Natural|IGI

1.23ct H SI2 Princess Natural Diamond

EX • H/SI2 • IGI 788607727

Shape and cutting style on the report: Princess cut

Certificate IGI 788607727

Diamond specifications and retailer prices

From £1,709 GBP
As of November 4, 2026
Save £2,656 GBP (61%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,365 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural princess diamond

This 1.23ct natural princess sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 788607727. Listed at 8 retailers as of November 4, 2026, with prices from £1,709 to £4,365, a £2,656 spread on the same certified stone. NZ Jewellers lists it at £4,365. 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

1.23
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 788607727
Dimensions5.78 × 5.76 × 4.19 mm
L/W Ratio1.00
Culet sizePointed
Top View
5.78 mm5.76 mm1.23 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 788607727
Side View
Table 71.0%Crown 44.4°Girdle: Slightly ThickPavilion 38.7°Culet: NoneDepth 72.7%

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 4
Current: £4,365 GBP|Low: £1,527 GBP|High: £4,365 GBP|Avg: £2,400 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£1,527 GBP
Retailer 10£1,709 GBP
Retailer 6£1,892 GBP
Retailer 8£1,892 GBP
Retailer 5£1,979 GBP
Retailer 7£2,183 GBP
Retailer 3£2,202 GBP
Retailer 2£2,430 GBP
Retailer 9£2,484 GBP
Retailer 4£3,648 GBP
NZ Jewellers£4,365 GBP

20 data points across 11 retailers

8 retailers£1,709 GBP to £4,365 GBP

B+
Cheapest Retailer
-
£1,709 GBP
Retailer 2
-
£1,892 GBP
View
Price last confirmed 9 days ago
B+
Retailer 3
-
£1,892 GBP
View
B+
Retailer 4
-
£1,979 GBP
View
B
Retailer 5
-
£2,183 GBP
View
B+
Retailer 6
-
£2,430 GBP
View
B
Retailer 7
-
£3,648 GBP
View
Most Expensive
B
NZ Jewellers
2ada0e4a-be21-459d-9f2d-e386e2df6cf3 · Nov 5
£4,365 GBP
$5,843 USD
View
7 more retailers have this diamond
Prices start from £1,709 GBPSave up to £2,656 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+
1.23ct Princess
£1,709 GBP