CaratHunter
Plans
Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 5556305352

Certificate GIA 5556305352

Diamond specifications and retailer prices

From $3,018 SGD
As of November 6, 2026
Save $3,481 SGD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,499 SGD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5556305352. Listed at 17 retailers as of November 4, 2026, with prices from $3,018 to $6,499, a $3,481 spread on the same certified stone. MOH London lists it at $6,499. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556305352
Dimensions7.51 × 5.76 × 4.19 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.51 mm5.76 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556305352
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 72.8%

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 6
Current: $6,499 SGD|Low: $2,968 SGD|High: $6,790 SGD|Avg: $4,142 SGD|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 4$3,018 SGD
Retailer 6$3,023 SGD
Retailer 12$3,222 SGD
Retailer 13$3,259 SGD
Retailer 14$3,274 SGD
Retailer 16$3,467 SGD
Retailer 8$3,518 SGD
Retailer 5$3,704 SGD
Retailer 2$3,781 SGD
Retailer 3$3,794 SGD
Retailer 7$3,996 SGD
Retailer 10$4,101 SGD
Retailer 9$4,536 SGD
Retailer 11$4,756 SGD
Retailer 15$6,226 SGD
MOH London$6,499 SGD

24 data points across 16 retailers

17 retailers$3,018 SGD to $6,499 SGD

A
Cheapest Retailer
-
$3,018 SGD
A
Retailer 2
-
$3,023 SGD
View
A
Retailer 3
-
$3,222 SGD
View
A
Retailer 4
-
$3,259 SGD
View
Final sale: no returns
A
Retailer 5
-
$3,274 SGD
View
A
Retailer 6
-
$3,467 SGD
View
B+
Retailer 7
-
$3,518 SGD
View
A
Retailer 8
-
$3,704 SGD
View
A
Retailer 9
-
$3,781 SGD
View
A
Retailer 10
-
$3,794 SGD
View
Retailer 11
-
$3,996 SGD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$4,101 SGD
View
B+
Retailer 13
-
$4,213 SGD
View
B+
Retailer 14
-
$4,536 SGD
View
B+
Retailer 15
-
$4,756 SGD
View
B
Retailer 16
-
$6,226 SGD
View
Most Expensive
B
MOH London
83913B52F · Nov 4
$6,499 SGD
£3,993 GBP
View
16 more retailers have this diamond
Prices start from $3,018 SGDSave up to $3,481 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
$3,018 SGD