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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2554355031

Certificate GIA 2554355031

Diamond specifications and retailer prices

From $2,039 USD
As of October 31, 2026
Save $7,022 USD (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $9,061 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554355031. Listed at 7 retailers as of October 31, 2026, with prices from $2,039 to $9,061, a $7,022 spread on the same certified stone. MOH London lists it at $9,061. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2554355031
Dimensions7.33 × 7.37 × 4.54 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
7.33 mm7.37 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554355031
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

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: Oct 31
Current: $9,061 USD|Low: $2,039 USD|High: $9,388 USD|Avg: $6,159 USD|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7$2,039 USD
Retailer 4$5,498 USD
Retailer 2$6,151 USD
Retailer 5$6,151 USD
Retailer 3$6,530 USD
Retailer 6$6,952 USD
MOH London$9,061 USD

41 data points across 7 retailers

7 retailers$2,039 USD to $9,061 USD

A
Cheapest Retailer
-
$2,039 USD
A
Retailer 2
-
$5,498 USD
£4,329 GBP
View
A
Retailer 3
-
$6,151 USD
View
A
Retailer 4
-
$6,151 USD
View
A
Retailer 5
-
$6,530 USD
£5,142 GBP
View
B+
Retailer 6
-
$6,952 USD
View
Most Expensive
B
MOH London
4B920FA24 · Nov 1
$9,061 USD
£7,135 GBP
View
6 more retailers have this diamond
Prices start from $2,039 USDSave up to $7,022 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 Round
$2,039 USD