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Cushion|Lab Grown|IGI

1.23ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG833665783

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

Certificate IGI LG833665783

Diamond specifications and retailer prices

From $288 SGD
As of November 6, 2026
Save $1,148 SGD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,436 SGD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG833665783 or 833665783. Listed at 11 retailers as of November 6, 2026, with prices from $288 to $1,436, a $1,148 spread on the same certified stone. Reve Diamonds lists it at $1,436. 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

1.23
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833665783
Dimensions6.26 × 6.17 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.26 mm6.17 mm1.23 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833665783
Side View
Table 61.0%Crown 35.5°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $473 SGD|Low: $270 SGD|High: $1,436 SGD|Avg: $745 SGD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 6, 2026
Retailer 2$272 SGD
Retailer 8$288 SGD
Retailer 1$473 SGD
Retailer 3$497 SGD
Retailer 9$501 SGD
Retailer 7$527 SGD
Retailer 6$731 SGD
Retailer 5$974 SGD
Retailer 10$974 SGD
Retailer 4$1,311 SGD
Reve Diamonds$1,436 SGD

45 data points across 11 retailers

11 retailers$288 SGD to $1,436 SGD

Retailer 1
-
$272 SGD
Price last confirmed 12 days ago
A
Retailer 2
-
$288 SGD
View
Final sale: no returns
A
Retailer 3
-
$473 SGD
View
A
Retailer 4
-
$497 SGD
View
B+
Retailer 5
-
$501 SGD
View
B+
Retailer 6
-
$527 SGD
View
B+
Retailer 7
-
$731 SGD
View
B
Retailer 8
-
$974 SGD
View
B
Retailer 9
-
$974 SGD
View
B
Retailer 10
-
$1,311 SGD
View
Most Expensive
B
Reve Diamonds
B8323DEFA · Nov 6
$1,436 SGD
$1,121 USD
View
10 more retailers have this diamond
Prices start from $288 SGDSave up to $1,148 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
1.23ct Cushion
$288 SGD