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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6542714039

Certificate GIA 6542714039

Diamond specifications and retailer prices

From $4,338 SGD
HK$26,500 HKD
As of November 2, 2026
Save $5,055 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,393 SGD at MOH London · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542714039. Listed at 19 retailers as of November 2, 2026, with prices from $4,338 to $9,393, a $5,055 spread on the same certified stone. MOH London lists it at $9,393. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle30.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542714039
Dimensions7.36 × 5.88 × 4.04 mm
L/W Ratio1.25
Top View
7.36 mm5.88 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542714039
Side View
Table 64.0%CrownGirdle: STK-THKPavilion 30.8°Culet: NoneDepth 68.8%

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 2
Current: $9,393 SGD|Low: $4,273 SGD|High: $9,825 SGD|Avg: $6,060 SGD|-4.4%
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
Retailer 17
Retailer 18
November 3, 2026
Retailer 15$4,338 SGD
Retailer 14$4,787 SGD
Retailer 12$4,856 SGD
Retailer 7$5,026 SGD
Retailer 4$5,210 SGD
Retailer 13$5,233 SGD
Retailer 11$5,432 SGD
Retailer 3$5,443 SGD
Retailer 10$5,448 SGD
Retailer 2$5,576 SGD
Retailer 16$5,596 SGD
Retailer 18$5,768 SGD
Retailer 6$5,774 SGD
Retailer 8$5,838 SGD
Retailer 17$6,673 SGD
Retailer 5$7,402 SGD
Retailer 9$9,338 SGD
MOH London$9,393 SGD

20 data points across 18 retailers

19 retailers$4,338 SGD to $9,393 SGD

A
Cheapest Retailer
-
$4,338 SGD
HK$26,500 HKD
A
Retailer 2
-
$4,787 SGD
$3,743 USD
View
A
Retailer 3
-
$4,856 SGD
€3,616 EUR
View
A
Retailer 4
-
$5,026 SGD
$3,930 USD
View
A
Retailer 5
-
$5,210 SGD
$4,074 USD
View
A
Retailer 6
-
$5,233 SGD
A$6,295 AUD
View
A
Retailer 7
-
$5,432 SGD
£3,344 GBP
View
B+
Retailer 8
-
$5,443 SGD
$4,256 USD
View
Final sale: no returns
A
Retailer 9
-
$5,448 SGD
$4,260 USD
View
B+
Retailer 10
-
$5,576 SGD
$4,360 USD
View
A
Retailer 11
-
$5,596 SGD
£3,445 GBP
View
B+
Retailer 12
-
$5,768 SGD
$4,510 USD
View
A
Retailer 13
-
$5,774 SGD
$4,515 USD
View
Retailer 14
-
$5,838 SGD
$4,565 USD
View
Price last confirmed 13 days ago
Retailer 15
-
$6,320 SGD
A$7,602 AUD
View
Price last confirmed 24 days ago
B+
Retailer 16
-
$6,673 SGD
€4,969 EUR
View
B+
Retailer 17
-
$7,402 SGD
ZAR 93,504 ZAR
View
Retailer 18
-
$9,338 SGD
$7,302 USD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
87E195438 · Nov 2
$9,393 SGD
£5,783 GBP
View
18 more retailers have this diamond
Prices start from $4,338 SGDSave up to $5,055 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
$4,338 SGD