Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 5436497455

Certificate GIA 5436497455

Diamond specifications and retailer prices

From $3,067 USD
As of October 31, 2026
Save $3,642 USD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,709 USD at MOH London · As of October 29, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 5436497455. Listed at 20 retailers as of October 29, 2026, with prices from $3,067 to $6,709, a $3,642 spread on the same certified stone. MOH London lists it at $6,709. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5436497455
Dimensions6.39 × 6.28 × 4.34 mm
L/W Ratio1.02
Top View
6.39 mm6.28 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5436497455
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.1%

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: $6,709 USD|Low: $3,067 USD|High: $6,754 USD|Avg: $4,151 USD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8$3,067 USD
Retailer 10$3,135 USD
Retailer 11$3,337 USD
Retailer 9$3,469 USD
Retailer 7$3,615 USD
Retailer 2$3,760 USD
Retailer 4$4,082 USD
Retailer 3$4,279 USD
Retailer 6$4,516 USD
Retailer 5$4,905 USD
MOH London$6,709 USD

34 data points across 11 retailers

20 retailers$3,067 USD to $6,709 USD

A
Cheapest Retailer
-
$3,067 USD
A
Retailer 2
-
$3,135 USD
View
B+
Retailer 3
-
$3,209 USD
View
B+
Retailer 4
-
$3,337 USD
View
Final sale: no returns
A
Retailer 5
-
$3,469 USD
View
B+
Retailer 6
-
$3,475 USD
View
B+
Retailer 7
-
$3,577 USD
View
B+
Retailer 8
-
$3,615 USD
View
B+
Retailer 9
-
$3,619 USD
View
B+
Retailer 10
-
$3,760 USD
£2,961 GBP
View
B+
Retailer 11
-
$3,864 USD
View
B+
Retailer 12
-
$4,082 USD
£3,214 GBP
View
B+
Retailer 13
-
$4,090 USD
View
B+
Retailer 14
-
$4,090 USD
View
B+
Retailer 15
-
$4,230 USD
View
Retailer 16
-
$4,279 USD
A$6,583 AUD
View
Price last confirmed 28 days ago
B+
Retailer 17
-
$4,516 USD
€4,301 EUR
View
Retailer 18
-
$4,517 USD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
$4,905 USD
ZAR 79,243 ZAR
View
Most Expensive
B
MOH London
595F6FEA4 · Oct 29
$6,709 USD
£5,283 GBP
View
19 more retailers have this diamond
Prices start from $3,067 USDSave up to $3,642 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
$3,067 USD