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Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 1553333834

Certificate GIA 1553333834

Diamond specifications and retailer prices

From $3,085 USD
HK$24,100 HKD
As of November 1, 2026
Save $3,741 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,826 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 I 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 1553333834. Listed at 16 retailers as of November 1, 2026, with prices from $3,085 to $6,826, a $3,741 spread on the same certified stone. MOH London lists it at $6,826. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553333834
Dimensions7.30 × 5.70 × 3.98 mm
L/W Ratio1.28
Girdle conditionVery Thick to Extremely Thick
Top View
7.30 mm5.70 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553333834
Side View
Table 67.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 69.8%

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: $6,826 USD|Low: $3,059 USD|High: $7,026 USD|Avg: $4,141 USD|-2.8%
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
Retailer 14
November 1, 2026
Retailer 8$3,085 USD
Retailer 4$3,200 USD
Retailer 5$3,283 USD
Retailer 13$3,356 USD
Retailer 3$3,413 USD
Retailer 14$3,504 USD
Retailer 12$3,698 USD
Retailer 6$3,912 USD
Retailer 2$3,982 USD
Retailer 7$4,176 USD
Retailer 11$4,619 USD
Retailer 9$4,621 USD
Retailer 10$5,120 USD
MOH London$6,826 USD

34 data points across 14 retailers

16 retailers$3,085 USD to $6,826 USD

A
Cheapest Retailer
-
$3,085 USD
HK$24,100 HKD
A
Retailer 2
-
$3,200 USD
View
A
Retailer 3
-
$3,283 USD
View
A
Retailer 4
-
$3,356 USD
View
A
Retailer 5
-
$3,413 USD
View
Final sale: no returns
A
Retailer 6
-
$3,504 USD
View
A
Retailer 7
-
$3,698 USD
View
A
Retailer 8
-
$3,912 USD
View
A
Retailer 9
-
$3,982 USD
£3,135 GBP
View
A
Retailer 10
-
$4,157 USD
View
A
Retailer 11
-
$4,176 USD
£3,288 GBP
View
B+
Retailer 12
-
$4,621 USD
€4,401 EUR
View
B+
Retailer 13
-
$5,120 USD
View
B+
Retailer 14
-
$5,120 USD
View
B+
Retailer 15
-
$5,290 USD
View
Most Expensive
B
MOH London
711C6122D · Nov 1
$6,826 USD
£5,375 GBP
View
15 more retailers have this diamond
Prices start from $3,085 USDSave up to $3,741 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
$3,085 USD