Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 5546300939

Certificate GIA 5546300939

Diamond specifications and retailer prices

From $3,062 USD
As of October 31, 2026
Save $2,883 USD (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,945 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5546300939. Listed at 14 retailers as of October 31, 2026, with prices from $3,062 to $5,945, a $2,883 spread on the same certified stone. MOH London lists it at $5,945. 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
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.42°
Pavilion angle31.98°
OriginNatural
Grading LabGIA
CertificateGIA 5546300939
Dimensions6.35 × 6.22 × 4.34 mm
L/W Ratio1.02
Top View
6.35 mm6.22 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546300939
Side View
Table 61.0%Crown 38.42°Girdle: THK-VTKPavilion 31.98°Culet: NoneDepth 69.7%

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: Oct 31
Current: $5,945 USD|Low: $3,062 USD|High: $7,010 USD|Avg: $4,140 USD|-14.3%
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
November 1, 2026
Retailer 12$3,062 USD
Retailer 3$3,072 USD
Retailer 7$3,324 USD
Retailer 4$3,416 USD
Retailer 13$3,493 USD
Retailer 9$3,533 USD
Retailer 8$3,690 USD
Retailer 11$3,690 USD
Retailer 2$3,751 USD
Retailer 10$3,810 USD
Retailer 6$3,940 USD
Retailer 5$5,182 USD
MOH London$5,945 USD

42 data points across 13 retailers

14 retailers$3,062 USD to $5,945 USD

A
Cheapest Retailer
-
$3,062 USD
A
Retailer 2
-
$3,072 USD
View
A
Retailer 3
-
$3,324 USD
CA$4,617 CAD
View
A
Retailer 4
-
$3,416 USD
View
A
Retailer 5
-
$3,493 USD
View
A
Retailer 6
-
$3,533 USD
View
A
Retailer 7
-
$3,690 USD
View
A
Retailer 8
-
$3,690 USD
View
A
Retailer 9
-
$3,751 USD
£2,953 GBP
View
A
Retailer 10
-
$3,810 USD
View
A
Retailer 11
-
$3,940 USD
€3,752 EUR
View
A
Retailer 12
-
$4,231 USD
CA$5,876 CAD
View
Retailer 13
-
$5,182 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
CC9B938F1 · Nov 1
$5,945 USD
£4,681 GBP
View
13 more retailers have this diamond
Prices start from $3,062 USDSave up to $2,883 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 Cushion
$3,062 USD