CaratHunter
Plans
Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

ID • F/SI1 • GIA 2235655108

Certificate GIA 2235655108

Diamond specifications and retailer prices

From $4,138 USD
As of November 1, 2026
Save $3,683 USD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,821 USD at MOH London · As of November 2, 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 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 2235655108. Listed at 13 retailers as of November 1, 2026, with prices from $4,138 to $7,821, a $3,683 spread on the same certified stone. MOH London lists it at $7,821. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36.75°
Pavilion angle32.53°
OriginNatural
Grading LabGIA
CertificateGIA 2235655108
Dimensions6.49 × 6.46 × 4.25 mm
L/W Ratio1.00
Girdle conditionThick
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.49 mm6.46 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235655108
Side View
Table 62.0%Crown 36.75°Girdle: STK-THKPavilion 32.53°Culet: NoneDepth 65.8%

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 1
Current: $7,821 USD|Low: $4,138 USD|High: $8,439 USD|Avg: $5,335 USD|-7.2%
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 2, 2026
Retailer 3$4,138 USD
Retailer 12$4,240 USD
Retailer 7$4,241 USD
Retailer 9$4,566 USD
Retailer 4$4,729 USD
Retailer 13$4,750 USD
Retailer 6$4,930 USD
Retailer 8$5,050 USD
Retailer 11$5,050 USD
Retailer 10$5,220 USD
Retailer 2$5,556 USD
Retailer 5$7,176 USD
MOH London$7,821 USD

37 data points across 13 retailers

13 retailers$4,138 USD to $7,821 USD

A
Cheapest Retailer
-
$4,138 USD
A
Retailer 2
-
$4,240 USD
View
A
Retailer 3
-
$4,241 USD
CA$5,890 CAD
View
A
Retailer 4
-
$4,566 USD
View
A
Retailer 5
-
$4,729 USD
View
A
Retailer 6
-
$4,750 USD
View
A
Retailer 7
-
$4,930 USD
£3,882 GBP
View
A
Retailer 8
-
$5,050 USD
View
A
Retailer 9
-
$5,050 USD
View
A
Retailer 10
-
$5,220 USD
View
A
Retailer 11
-
$5,556 USD
€5,291 EUR
View
B+
Retailer 12
-
$7,176 USD
View
Most Expensive
B+
MOH London
722B21398 · Nov 2
$7,821 USD
£6,158 GBP
View
12 more retailers have this diamond
Prices start from $4,138 USDSave up to $3,683 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
$4,138 USD