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Cushion|Lab Grown|IGI

3.12ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG537238304

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG537238304

Diamond specifications and retailer prices

From $869 USD
As of November 6, 2026
Save $4,021 USD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,890 USD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown cushion diamond

This 3.12ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG537238304 or 537238304. Listed at 12 retailers as of November 6, 2026, with prices from $869 to $4,890, a $4,021 spread on the same certified stone. Do Amore Diamonds lists it at $4,890. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG537238304
Dimensions8.32 × 8.23 × 5.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.32 mm8.23 mm3.12 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG537238304
Side View
Table 63.5%Crown 35.5°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 70.0%

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: $4,890 USD|Low: $675 USD|High: $4,890 USD|Avg: $1,764 USD|+29.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$869 USD
Retailer 7$870 USD
Retailer 2$916 USD
Retailer 10$1,038 USD
Retailer 11$1,053 USD
Retailer 5$1,167 USD
Retailer 3$1,546 USD
Retailer 8$1,985 USD
Retailer 12$2,551 USD
Retailer 4$2,571 USD
Retailer 6$3,260 USD
Do Amore Diamonds$4,890 USD

36 data points across 12 retailers

12 retailers$869 USD to $4,890 USD

A
Cheapest Retailer
-
$869 USD
A
Retailer 2
-
$870 USD
View
A
Retailer 3
-
$916 USD
View
A
Retailer 4
-
$1,038 USD
View
B+
Retailer 5
-
$1,053 USD
View
B+
Retailer 6
-
$1,167 USD
View
B+
Retailer 7
-
$1,546 USD
View
B+
Retailer 8
-
$1,985 USD
View
B
Retailer 9
-
$2,551 USD
View
B
Retailer 10
-
$2,571 USD
View
B
Retailer 11
-
$3,260 USD
View
Most Expensive
B
Do Amore Diamonds
27-18523B7C3 · Nov 6
$4,890 USD
View
11 more retailers have this diamond
Prices start from $869 USDSave up to $4,021 USD

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
$869 USD