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Cushion|Natural|IGI

0.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • IGI 815673863

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI 815673863

Diamond specifications and retailer prices

From $476 SGD
₹35,421 INR
As of November 1, 2026
Save $981 SGD (67%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,457 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815673863. Listed at 10 retailers as of November 1, 2026, with prices from $476 to $1,457, a $981 spread on the same certified stone. MOH London lists it at $1,457. 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

0.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle36.6°
OriginNatural
Grading LabIGI
CertificateIGI 815673863
Dimensions4.67 × 4.62 × 2.91 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
4.67 mm4.62 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815673863
Side View
Table 60.0%Crown 32.2°Girdle: STK-VTKPavilion 36.6°Culet: NoneDepth 63.0%

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 1
Current: $1,457 SGD|Low: $476 SGD|High: $1,535 SGD|Avg: $824 SGD|-5.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5$476 SGD
Retailer 9$582 SGD
Retailer 7$679 SGD
Retailer 8$723 SGD
Retailer 3$784 SGD
Retailer 11$799 SGD
Retailer 4$819 SGD
Retailer 10$843 SGD
Retailer 2$873 SGD
Retailer 6$973 SGD
MOH London$1,457 SGD

37 data points across 11 retailers

10 retailers$476 SGD to $1,457 SGD

A
Cheapest Retailer
-
$476 SGD
₹35,421 INR
B+
Retailer 2
-
$582 SGD
$455 USD
View
Final sale: no returns
B+
Retailer 3
-
$679 SGD
$531 USD
View
B+
Retailer 4
-
$723 SGD
$565 USD
View
B
Retailer 5
-
$799 SGD
$624 USD
View
B
Retailer 6
-
$819 SGD
£504 GBP
View
B
Retailer 7
-
$843 SGD
$659 USD
View
B
Retailer 8
-
$873 SGD
€650 EUR
View
B
Retailer 9
-
$973 SGD
ZAR 12,297 ZAR
View
Most Expensive
B
MOH London
D356764C4 · Nov 1
$1,457 SGD
£897 GBP
View
9 more retailers have this diamond
Prices start from $476 SGDSave up to $981 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
0.51ct Cushion
$476 SGD