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Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1425646526

Certificate GIA 1425646526

Diamond specifications and retailer prices

From $4,515 SGD
$3,532 USD
As of October 31, 2026
Save $1,992 SGD (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,507 SGD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1425646526. Listed at 11 retailers as of October 30, 2026, with prices from $4,515 to $6,507, a $1,992 spread on the same certified stone. 77 Diamonds lists it at $6,507. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1425646526
Dimensions6.95 × 6.28 × 4.26 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.95 mm6.28 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1425646526
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

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: Oct 31
Current: $6,507 SGD|Low: $4,458 SGD|High: $6,531 SGD|Avg: $5,727 SGD|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$4,515 SGD
Retailer 3$4,602 SGD
Retailer 4$5,672 SGD
Retailer 7$6,021 SGD
Retailer 8$6,021 SGD
Retailer 6$6,226 SGD
Retailer 2$6,273 SGD
77 Diamonds$6,507 SGD

39 data points across 8 retailers

11 retailers$4,515 SGD to $6,507 SGD

A
Cheapest Retailer
-
$4,515 SGD
$3,532 USD
A
Retailer 2
-
$4,610 SGD
$3,606 USD
View
A
Retailer 3
-
$4,658 SGD
$3,644 USD
View
A
Retailer 4
-
$4,714 SGD
$3,688 USD
View
A
Retailer 5
-
$4,887 SGD
A$5,882 AUD
View
B+
Retailer 6
-
$5,672 SGD
$4,437 USD
View
B+
Retailer 7
-
$6,021 SGD
$4,710 USD
View
B+
Retailer 8
-
$6,021 SGD
$4,710 USD
View
B+
Retailer 9
-
$6,226 SGD
$4,870 USD
View
B+
Retailer 10
-
$6,273 SGD
€4,673 EUR
View
Most Expensive
B+
77 Diamonds
CUSMB7JFGWDUP · Oct 30
$6,507 SGD
£4,008 GBP
View
10 more retailers have this diamond
Prices start from $4,515 SGDSave up to $1,992 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.

A
1.51ct Cushion
$4,515 SGD