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Princess|Natural|GIA

1.20ct D SI1 Princess Natural Diamond

ID • D/SI1 • GIA 1523911804

Certificate GIA 1523911804

Diamond specifications and retailer prices

From £1,635 GBP
As of November 6, 2026
Save £2,075 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,455 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural princess diamond

This 1.2ct natural princess sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1523911804. Listed at 22 retailers as of November 4, 2026, with a 127% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1523911804
Dimensions6.01 × 5.89 × 3.99 mm
L/W Ratio1.02
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity
Top View
6.01 mm5.89 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1523911804
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

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: £4,455 GBP|Low: £1,635 GBP|High: £4,469 GBP|Avg: £2,536 GBP|+2.5%
Queensmith
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
November 6, 2026
Retailer 14£1,635 GBP
Retailer 2£1,712 GBP
Retailer 12£1,957 GBP
Retailer 4£1,960 GBP
Retailer 11£2,130 GBP
Retailer 6£2,185 GBP
Retailer 3£2,229 GBP
Retailer 9£2,234 GBP
Retailer 7£2,270 GBP
Retailer 5£2,309 GBP
Retailer 8£2,471 GBP
Retailer 10£2,592 GBP
Retailer 13£3,709 GBP
Queensmith£4,455 GBP

28 data points across 14 retailers

22 retailers£1,635 GBP to £3,709 GBP

A
Cheapest Retailer
-
£1,635 GBP
A
Retailer 2
-
£1,712 GBP
View
A
Retailer 3
-
£1,957 GBP
View
A
Retailer 4
-
£1,960 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,087 GBP
View
B+
Retailer 6
-
£2,130 GBP
View
B+
Retailer 7
-
£2,185 GBP
View
B+
Retailer 8
-
£2,200 GBP
View
B+
Retailer 9
-
£2,229 GBP
View
B+
Retailer 10
-
£2,234 GBP
View
B+
Retailer 11
-
£2,270 GBP
View
B+
Retailer 12
-
£2,309 GBP
View
Retailer 13
-
£2,331 GBP
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£2,383 GBP
View
Retailer 15
-
£2,466 GBP
View
Price last confirmed 38 days ago
B+
Retailer 16
-
£2,471 GBP
View
Retailer 17
-
£2,499 GBP
View
Price last confirmed 33 days ago
B+
Retailer 18
-
£2,592 GBP
View
Retailer 19
-
£2,690 GBP
View
Price last confirmed 33 days ago
B
Retailer 20
-
£3,709 GBP
View
Retailer 21
-
£4,061 GBP
View
Price last confirmed 34 days ago
Most Expensive
Queensmith
1523911804 · Oct 28
£4,455 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from £1,635 GBPSave up to £2,075 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
1.20ct Princess
£1,635 GBP