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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2528970528

Certificate GIA 2528970528

Diamond specifications and retailer prices

From $2,916 SGD
As of November 5, 2026
Save $3,388 SGD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,304 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 2528970528. Listed at 12 retailers as of November 4, 2026, with prices from $2,916 to $6,304, a $3,388 spread on the same certified stone. MOH London lists it at $6,304. 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
FluorescenceFaint
Crown angle37°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528970528
Dimensions6.59 × 6.55 × 4.45 mm
L/W Ratio1.01
Top View
6.59 mm6.55 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2528970528
Side View
Table 61.0%Crown 37°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,304 SGD|Low: $2,916 SGD|High: $6,388 SGD|Avg: $3,962 SGD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$2,916 SGD
Retailer 7$3,021 SGD
Retailer 12$3,231 SGD
Retailer 2$3,499 SGD
Retailer 9$3,537 SGD
Retailer 8$3,608 SGD
Retailer 3$3,788 SGD
Retailer 5$3,795 SGD
Retailer 10$3,913 SGD
Retailer 11$3,947 SGD
Retailer 6$4,402 SGD
MOH London$6,304 SGD

42 data points across 12 retailers

12 retailers$2,916 SGD to $6,304 SGD

A
Cheapest Retailer
-
$2,916 SGD
A
Retailer 2
-
$3,021 SGD
View
A
Retailer 3
-
$3,231 SGD
View
A
Retailer 4
-
$3,499 SGD
View
B+
Retailer 5
-
$3,537 SGD
View
Retailer 6
-
$3,608 SGD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$3,788 SGD
View
A
Retailer 8
-
$3,795 SGD
View
B+
Retailer 9
-
$3,913 SGD
View
B+
Retailer 10
-
$3,947 SGD
View
B+
Retailer 11
-
$4,402 SGD
View
Most Expensive
B
MOH London
34FD10842 · Nov 4
$6,304 SGD
£3,873 GBP
View
11 more retailers have this diamond
Prices start from $2,916 SGDSave up to $3,388 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
$2,916 SGD