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Princess|Natural|GIA

1.20ct I SI1 Princess Natural Diamond

ID • I/SI1 • GIA 1529912024

Certificate GIA 1529912024

Diamond specifications and retailer prices

From $1,638 USD
As of November 6, 2026
Save $2,107 USD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,745 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural princess diamond

This 1.2ct natural princess sits in the classic one-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 1529912024. Listed at 14 retailers as of November 2, 2026, with prices from $1,638 to $3,745, a $2,107 spread on the same certified stone. MOH London lists it at $3,745. 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
I
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1529912024
Dimensions5.80 × 5.75 × 4.08 mm
L/W Ratio1.01
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
5.80 mm5.75 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1529912024
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: 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 6
Current: $3,745 USD|Low: $1,638 USD|High: $3,790 USD|Avg: $2,305 USD|-0.8%
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
November 6, 2026
Retailer 13$1,638 USD
Retailer 2$1,720 USD
Retailer 15$1,973 USD
Retailer 4$2,055 USD
Retailer 3$2,070 USD
Retailer 6$2,193 USD
Retailer 7$2,193 USD
Retailer 12$2,240 USD
Retailer 5$2,267 USD
Retailer 8$2,276 USD
Retailer 14$2,276 USD
Retailer 10$2,322 USD
Retailer 11$2,609 USD
Retailer 9$2,904 USD
MOH London$3,745 USD

12 data points across 15 retailers

14 retailers$1,638 USD to $3,745 USD

A
Cheapest Retailer
-
$1,638 USD
A
Retailer 2
-
$1,720 USD
View
A
Retailer 3
-
$1,973 USD
View
Final sale: no returns
A
Retailer 4
-
$2,055 USD
View
A
Retailer 5
-
$2,070 USD
View
B+
Retailer 6
-
$2,240 USD
View
B+
Retailer 7
-
$2,267 USD
View
B+
Retailer 8
-
$2,276 USD
View
B+
Retailer 9
-
$2,276 USD
View
B+
Retailer 10
-
$2,322 USD
View
Retailer 11
-
$2,531 USD
View
Price last confirmed 52 days ago
B+
Retailer 12
-
$2,609 USD
View
B+
Retailer 13
-
$2,904 USD
View
Most Expensive
B
MOH London
18FC98B76 · Nov 2
$3,745 USD
£2,949 GBP
View
13 more retailers have this diamond
Prices start from $1,638 USDSave up to $2,107 USD

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
$1,638 USD