Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 6555315155

Certificate GIA 6555315155

Diamond specifications and retailer prices

From $3,195 USD
As of November 6, 2026
Save $1,126 USD (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,321 USD at GemTrove · As of November 6, 2026
View at GemTrove

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 6555315155. Listed at 8 retailers as of November 6, 2026, with prices from $3,195 to $4,321, a $1,126 spread on the same certified stone. GemTrove lists it at $4,321. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555315155
Dimensions6.38 × 6.26 × 4.52 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.38 mm6.26 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555315155
Side View
Table 71.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 72.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,195 USD|Low: $2,845 USD|High: $4,203 USD|Avg: $3,510 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$3,195 USD
Retailer 3$3,239 USD
Retailer 4$3,298 USD
Retailer 7$3,351 USD
Retailer 2$3,494 USD
Retailer 6$3,802 USD
Retailer 5$3,846 USD

46 data points across 7 retailers

8 retailers$3,195 USD to $4,321 USD

A
Cheapest Retailer
-
$3,195 USD
Retailer 2
-
$3,239 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$3,351 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$3,494 USD
View
B+
Retailer 5
-
$3,802 USD
View
Retailer 6
-
$3,846 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$4,064 USD
View
Most Expensive
B+
GemTrove
GT-N-01307688-98 · Nov 6
$4,321 USD
A$6,648 AUD
View
7 more retailers have this diamond
Prices start from $3,195 USDSave up to $1,126 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
1.51ct Princess
$3,195 USD