Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1553050279

Certificate GIA 1553050279

Diamond specifications and retailer prices

From $3,136 USD
HK$24,500 HKD
As of November 1, 2026
Save $3,966 USD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,102 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 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 $3,136 to $7,102, a $3,966 spread on the same certified stone. MOH London lists it at $7,102. 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: $7,102 USD|Low: $3,110 USD|High: $7,306 USD|Avg: $4,472 USD|-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$3,136 USD
Retailer 4$3,674 USD
Retailer 5$3,777 USD
Retailer 2$3,934 USD
Retailer 8$3,960 USD
Retailer 9$4,316 USD
Retailer 7$4,536 USD
Retailer 3$4,859 USD
MOH London$7,102 USD

35 data points across 9 retailers

10 retailers$3,136 USD to $7,102 USD

A
Cheapest Retailer
-
$3,136 USD
HK$24,500 HKD
A
Retailer 2
-
$3,674 USD
€3,499 EUR
View
A
Retailer 3
-
$3,777 USD
View
A
Retailer 4
-
$3,934 USD
£3,098 GBP
View
A
Retailer 5
-
$3,960 USD
SGD 5,351 SGD
View
A
Retailer 6
-
$4,316 USD
View
Final sale: no returns
A
Retailer 7
-
$4,536 USD
View
B+
Retailer 8
-
$4,568 USD
A$7,028 AUD
View
B+
Retailer 9
-
$4,859 USD
€4,628 EUR
View
Most Expensive
B
MOH London
3EE8400D9 · Nov 1
$7,102 USD
£5,592 GBP
View
9 more retailers have this diamond
Prices start from $3,136 USDSave up to $3,966 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
$3,136 USD