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Cushion|Lab Grown|IGI

3.12ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG567368333

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG567368333

Diamond specifications and retailer prices

From $920 SGD
$720 USD
As of October 31, 2026
Save $3,902 SGD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,822 SGD at B2C Jewels · As of October 26, 2026
View at B2C Jewels

About this 3.12ct lab-grown cushion diamond

This 3.12ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567368333 or 567368333. Listed at 8 retailers as of October 26, 2026, with prices from $920 to $4,822, a $3,902 spread on the same certified stone. B2C Jewels lists it at $4,822. 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

3.12
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567368333
Dimensions8.75 × 8.39 × 5.20 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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
8.75 mm8.39 mm3.12 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567368333
Side View
Table 62.5%Crown 35°Girdle: THN-STKPavilion 35.1°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $1,261 SGD|Low: $920 SGD|High: $4,822 SGD|Avg: $1,691 SGD|-73.9%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 3$920 SGD
Retailer 4$981 SGD
Retailer 5$1,241 SGD
B2C Jewels$1,261 SGD
Retailer 2$1,330 SGD
Retailer 6$1,390 SGD
Retailer 7$2,601 SGD

6 data points across 7 retailers

8 retailers$920 SGD to $4,822 SGD

A
Cheapest Retailer
-
$920 SGD
$720 USD
A
Retailer 2
-
$981 SGD
£604 GBP
View
A
Retailer 3
-
$1,241 SGD
$971 USD
View
A
Retailer 4
-
$1,261 SGD
$986 USD
View
A
Retailer 5
-
$1,330 SGD
£819 GBP
View
A
Retailer 6
-
$1,390 SGD
$1,087 USD
View
B
Retailer 7
-
$2,685 SGD
$2,100 USD
View
Most Expensive
B
B2C Jewels
21586996 · Oct 26
$4,822 SGD
$3,772 USD
View
7 more retailers have this diamond
Prices start from $920 SGDSave up to $3,902 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
3.12ct Cushion
$920 SGD