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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1553050279

Certificate GIA 1553050279

Diamond specifications and retailer prices

From $4,381 CAD
HK$24,500 HKD
As of November 1, 2026
Save $5,540 CAD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,921 CAD 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553050279. Listed at 10 retailers as of November 1, 2026, with prices from $4,381 to $9,921, a $5,540 spread on the same certified stone. MOH London lists it at $9,921. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.22°
OriginNatural
Grading LabGIA
CertificateGIA 1553050279
Dimensions7.56 × 5.92 × 4.14 mm
L/W Ratio1.28
Key to symbols
Feather, Crystal, Needle
Top View
7.56 mm5.92 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553050279
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 36.22°Culet: NoneDepth 69.9%

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: Nov 1
Current: $9,921 CAD|Low: $4,345 CAD|High: $10,206 CAD|Avg: $6,247 CAD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$4,381 CAD
Retailer 4$5,132 CAD
Retailer 5$5,276 CAD
Retailer 2$5,495 CAD
Retailer 8$5,531 CAD
Retailer 9$6,029 CAD
Retailer 7$6,336 CAD
Retailer 3$6,788 CAD
MOH London$9,921 CAD

35 data points across 9 retailers

10 retailers$4,381 CAD to $9,921 CAD

A
Cheapest Retailer
-
$4,381 CAD
HK$24,500 HKD
A
Retailer 2
-
$5,132 CAD
€3,499 EUR
View
A
Retailer 3
-
$5,276 CAD
$3,777 USD
View
A
Retailer 4
-
$5,495 CAD
£3,098 GBP
View
A
Retailer 5
-
$5,531 CAD
SGD 5,351 SGD
View
A
Retailer 6
-
$6,029 CAD
$4,316 USD
View
Final sale: no returns
A
Retailer 7
-
$6,336 CAD
$4,536 USD
View
B+
Retailer 8
-
$6,381 CAD
A$7,028 AUD
View
B+
Retailer 9
-
$6,788 CAD
€4,628 EUR
View
Most Expensive
B
MOH London
3EE8400D9 · Nov 1
$9,921 CAD
£5,592 GBP
View
9 more retailers have this diamond
Prices start from $4,381 CADSave up to $5,540 CAD

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
$4,381 CAD