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Princess|Natural|GIA

1.23ct J SI1 Princess Natural Diamond

VG • J/SI1 • GIA 5231721589

Certificate GIA 5231721589

Diamond specifications and retailer prices

From £1,033 GBP
As of November 5, 2026
Save £1,328 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,361 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural princess diamond

This 1.23ct natural princess sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231721589. Listed at 18 retailers as of November 4, 2026, with prices from £1,033 to £2,361, a £1,328 spread on the same certified stone. MOH London lists it at £2,361. 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

1.23
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5231721589
Dimensions6.12 × 5.82 × 4.22 mm
L/W Ratio1.05
Top View
6.12 mm5.82 mm1.23 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 5231721589
Side View
Table 75.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 72.6%

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 5
Current: £2,361 GBP|Low: £994 GBP|High: £2,361 GBP|Avg: £1,405 GBP|+2.8%
MOH London
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
Retailer 18
November 6, 2026
Retailer 12£1,033 GBP
Retailer 14£1,089 GBP
Retailer 7£1,106 GBP
Retailer 3£1,118 GBP
Retailer 4£1,129 GBP
Retailer 10£1,151 GBP
Retailer 8£1,187 GBP
Retailer 16£1,217 GBP
Retailer 5£1,357 GBP
Retailer 6£1,442 GBP
Retailer 17£1,442 GBP
Retailer 18£1,487 GBP
Retailer 11£1,551 GBP
Retailer 13£1,648 GBP
Retailer 9£1,709 GBP
Retailer 2£1,714 GBP
Retailer 15£1,934 GBP
MOH London£2,361 GBP

32 data points across 18 retailers

18 retailers£1,033 GBP to £2,361 GBP

B+
Cheapest Retailer
-
£1,033 GBP
A
Retailer 2
-
£1,089 GBP
View
Retailer 3
-
£1,106 GBP
View
Price last confirmed 20 days ago
Retailer 4
-
£1,118 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
£1,129 GBP
View
Final sale: no returns
Retailer 6
-
£1,151 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£1,187 GBP
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£1,217 GBP
View
B+
Retailer 9
-
£1,357 GBP
View
B
Retailer 10
-
£1,442 GBP
View
B
Retailer 11
-
£1,442 GBP
View
B
Retailer 12
-
£1,487 GBP
View
B
Retailer 13
-
£1,551 GBP
View
B
Retailer 14
-
£1,648 GBP
View
Retailer 15
-
£1,709 GBP
View
Price last confirmed 33 days ago
B
Retailer 16
-
£1,714 GBP
View
B
Retailer 17
-
£1,934 GBP
View
Most Expensive
B
MOH London
93F73F8D2 · Nov 4
£2,361 GBP
View
17 more retailers have this diamond
Prices start from £1,033 GBPSave up to £1,328 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
1.23ct Princess
£1,033 GBP