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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1343477968

Certificate GIA 1343477968

Diamond specifications and retailer prices

From $6,038 SGD
As of November 6, 2026
Save $5,748 SGD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,786 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1343477968. Listed at 15 retailers as of November 4, 2026, with prices from $6,038 to $11,786, a $5,748 spread on the same certified stone. MOH London lists it at $11,786. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1343477968
Dimensions6.60 × 6.58 × 4.43 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.60 mm6.58 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1343477968
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.3%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $11,786 SGD|Low: $6,038 SGD|High: $11,960 SGD|Avg: $7,937 SGD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$6,038 SGD
Retailer 5$6,152 SGD
Retailer 9$6,792 SGD
Retailer 6$7,267 SGD
Retailer 7$7,599 SGD
Retailer 3$7,619 SGD
Retailer 2$8,251 SGD
Retailer 4$9,786 SGD
MOH London$11,786 SGD

44 data points across 9 retailers

15 retailers$6,038 SGD to $11,786 SGD

B
Cheapest Retailer
-
$6,038 SGD
Retailer 2
-
$6,152 SGD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
$6,266 SGD
View
B+
Retailer 4
-
$6,338 SGD
View
B+
Retailer 5
-
$6,418 SGD
View
B
Retailer 6
-
$6,764 SGD
View
B
Retailer 7
-
$6,792 SGD
View
Retailer 8
-
$7,267 SGD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$7,599 SGD
View
B
Retailer 10
-
$7,619 SGD
View
B
Retailer 11
-
$7,660 SGD
View
B
Retailer 12
-
$8,251 SGD
View
Retailer 13
-
$8,847 SGD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$9,786 SGD
View
Most Expensive
B
MOH London
5FC1F0D5D · Nov 4
$11,786 SGD
£7,241 GBP
View
14 more retailers have this diamond
Prices start from $6,038 SGDSave up to $5,748 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
$6,038 SGD