Princess|Natural|GIA

1.51ct F SI1 Princess Natural Diamond

EX • F/SI1 • GIA 6565155424

Certificate GIA 6565155424

Diamond specifications and retailer prices

From $4,034 USD
As of November 6, 2026
Save $1,094 USD (21%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,128 USD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded F 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 6565155424. Listed at 8 retailers as of November 5, 2026, with prices from $4,034 to $5,128, a $1,094 spread on the same certified stone. Blue Nile lists it at $5,128. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565155424
Dimensions6.20 × 6.02 × 4.63 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.20 mm6.02 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565155424
Side View
Table 70.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.9%

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: $5,128 USD|Low: $3,745 USD|High: $5,169 USD|Avg: $4,500 USD|-0.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$4,034 USD
Retailer 5$4,145 USD
Retailer 2$4,311 USD
Retailer 6$4,458 USD
Retailer 4$4,554 USD
Retailer 7$4,661 USD
Blue Nile$5,128 USD

45 data points across 7 retailers

8 retailers$4,034 USD to $5,128 USD

A
Cheapest Retailer
-
$4,034 USD
A
Retailer 2
-
$4,145 USD
View
A
Retailer 3
-
$4,311 USD
View
A
Retailer 4
-
$4,458 USD
View
Final sale: no returns
A
Retailer 5
-
$4,554 USD
View
A
Retailer 6
-
$4,661 USD
View
B+
Retailer 7
-
$5,097 USD
View
Most Expensive
B+
Blue Nile
30112509 · Nov 5
$5,128 USD
View
7 more retailers have this diamond
Prices start from $4,034 USDSave up to $1,094 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
$4,034 USD