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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6405967587

Certificate GIA 6405967587

Diamond specifications and retailer prices

From $6,689 SGD
As of November 6, 2026
Save $6,394 SGD (49%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $13,083 SGD at MOH London · As of November 7, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6405967587. Listed at 29 retailers as of November 6, 2026, with prices from $6,689 to $13,083, a $6,394 spread on the same certified stone. MOH London lists it at $13,083. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6405967587
Dimensions6.51 × 6.05 × 4.51 mm
L/W Ratio1.08
Top View
6.51 mm6.05 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6405967587
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 74.6%

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 6
Current: $13,083 SGD|Low: $7,042 SGD|High: $13,311 SGD|Avg: $9,595 SGD|-1.5%
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 7, 2026
Retailer 4$7,042 SGD
Retailer 12$7,054 SGD
Retailer 2$7,819 SGD
Retailer 8$7,942 SGD
Retailer 5$8,361 SGD
Retailer 9$8,500 SGD
Retailer 3$8,665 SGD
Retailer 7$9,486 SGD
Retailer 10$9,699 SGD
Retailer 11$10,892 SGD
Retailer 6$10,945 SGD
MOH London$13,083 SGD

33 data points across 12 retailers

29 retailers$6,689 SGD to $13,083 SGD

A
Cheapest Retailer
-
$6,689 SGD
A
Retailer 2
-
$6,974 SGD
View
Retailer 3
-
$7,042 SGD
View
Price last confirmed 10 days ago
A
Retailer 4
-
$7,054 SGD
View
A
Retailer 5
-
$7,121 SGD
View
Final sale: no returns
A
Retailer 6
-
$7,147 SGD
View
A
Retailer 7
-
$7,472 SGD
View
A
Retailer 8
-
$7,523 SGD
View
A
Retailer 9
-
$7,596 SGD
View
B+
Retailer 10
-
$7,819 SGD
View
B+
Retailer 11
-
$7,942 SGD
View
B+
Retailer 12
-
$8,088 SGD
View
B+
Retailer 13
-
$8,361 SGD
View
B+
Retailer 14
-
$8,414 SGD
View
B+
Retailer 15
-
$8,500 SGD
View
B+
Retailer 16
-
$8,530 SGD
View
Retailer 17
-
$8,665 SGD
View
Price last confirmed 16 days ago
B+
Retailer 18
-
$8,997 SGD
View
B+
Retailer 19
-
$8,997 SGD
View
B+
Retailer 20
-
$9,304 SGD
View
B+
Retailer 21
-
$9,486 SGD
View
B+
Retailer 22
-
$9,699 SGD
View
Retailer 23
-
$9,840 SGD
View
Price last confirmed 15 days ago
B
Retailer 24
-
$10,118 SGD
View
B
Retailer 25
-
$10,227 SGD
View
B+
Retailer 26
-
$10,892 SGD
View
B+
Retailer 27
-
$10,945 SGD
View
B
Retailer 28
-
$12,942 SGD
View
Most Expensive
B
MOH London
A7CF1D2F7 · Nov 7
$13,083 SGD
£8,038 GBP
View
28 more retailers have this diamond
Prices start from $6,689 SGDSave up to $6,394 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
$6,689 SGD