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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 1428687763

Certificate GIA 1428687763

Diamond specifications and retailer prices

From $6,226 SGD
$4,868 USD
As of November 2, 2026
Save $7,190 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,416 SGD 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1428687763. Listed at 19 retailers as of November 1, 2026, with prices from $6,226 to $13,416, a $7,190 spread on the same certified stone. MOH London lists it at $13,416. 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
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1428687763
Dimensions6.69 × 5.94 × 4.13 mm
L/W Ratio1.13
Culet sizeNone
Top View
6.69 mm5.94 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1428687763
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,416 SGD|Low: $6,709 SGD|High: $13,578 SGD|Avg: $9,415 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 2$6,865 SGD
Retailer 6$7,539 SGD
Retailer 7$8,051 SGD
Retailer 8$8,051 SGD
Retailer 5$9,344 SGD
Retailer 3$10,516 SGD
Retailer 4$11,828 SGD
MOH London$13,416 SGD

44 data points across 8 retailers

19 retailers$6,226 SGD to $13,416 SGD

B+
Cheapest Retailer
-
$6,226 SGD
$4,868 USD
B+
Retailer 2
-
$6,865 SGD
£4,227 GBP
View
B+
Retailer 3
-
$6,923 SGD
$5,413 USD
View
B+
Retailer 4
-
$7,379 SGD
$5,770 USD
View
B+
Retailer 5
-
$7,379 SGD
$5,770 USD
View
B+
Retailer 6
-
$7,539 SGD
$5,895 USD
View
B
Retailer 7
-
$7,606 SGD
$5,947 USD
View
B
Retailer 8
-
$7,622 SGD
$5,960 USD
View
B
Retailer 9
-
$8,051 SGD
$6,295 USD
View
Final sale: no returns
B
Retailer 10
-
$8,051 SGD
$6,295 USD
View
B
Retailer 11
-
$8,083 SGD
$6,320 USD
View
B+
Retailer 12
-
$8,191 SGD
$6,405 USD
View
B
Retailer 13
-
$8,579 SGD
$6,708 USD
View
B
Retailer 14
-
$9,231 SGD
$7,218 USD
View
Retailer 15
-
$9,344 SGD
A$11,240 AUD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$10,516 SGD
€7,831 EUR
View
Retailer 17
-
$10,607 SGD
$8,294 USD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$11,828 SGD
ZAR 149,411 ZAR
View
Most Expensive
B
MOH London
86C3866EA · Nov 1
$13,416 SGD
£8,260 GBP
View
18 more retailers have this diamond
Prices start from $6,226 SGDSave up to $7,190 SGD

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.

B+
1.51ct Cushion
$6,226 SGD