CaratHunter
Plans
Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 5433612237

Certificate GIA 5433612237

Diamond specifications and retailer prices

From £3,780 GBP
As of November 6, 2026
Save £1,660 GBP (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,441 GBP at 77 Diamonds · As of November 4, 2026
View at 77 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5433612237. Listed at 11 retailers as of November 4, 2026, with prices from £3,780 to £5,441, a £1,660 spread on the same certified stone. 77 Diamonds lists it at £5,441. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5433612237
Dimensions6.19 × 6.19 × 4.52 mm
L/W Ratio1.00
Top View
6.19 mm6.19 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5433612237
Side View
Table 75.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 73.0%

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: £5,441 GBP|Low: £3,780 GBP|High: £5,530 GBP|Avg: £4,665 GBP|+0.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 2£3,780 GBP
Retailer 3£3,853 GBP
Retailer 5£3,969 GBP
Retailer 6£4,221 GBP
Retailer 8£4,826 GBP
Retailer 4£4,860 GBP
Retailer 7£5,163 GBP
Retailer 9£5,163 GBP
Retailer 10£5,334 GBP
77 Diamonds£5,441 GBP

32 data points across 10 retailers

11 retailers£3,780 GBP to £5,441 GBP

B+
Cheapest Retailer
-
£3,780 GBP
B+
Retailer 2
-
£3,853 GBP
View
B+
Retailer 3
-
£3,969 GBP
View
B+
Retailer 4
-
£4,173 GBP
View
B+
Retailer 5
-
£4,221 GBP
View
B
Retailer 6
-
£4,826 GBP
View
B
Retailer 7
-
£4,860 GBP
View
B
Retailer 8
-
£5,163 GBP
View
B
Retailer 9
-
£5,163 GBP
View
B
Retailer 10
-
£5,334 GBP
View
Most Expensive
B
77 Diamonds
PRIZAEQUU5YV · Nov 4
£5,441 GBP
View
10 more retailers have this diamond
Prices start from £3,780 GBPSave up to £1,660 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
£3,780 GBP