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Cushion|Lab Grown|IGI

3.16ct G SI1 Cushion Lab Grown Diamond

EX • G/SI1 • IGI LG12438717

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12438717

Diamond specifications and retailer prices

From $604 USD
As of November 1, 2026
Save $4,186 USD (87%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,790 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 3.16ct lab-grown cushion diamond

This 3.16ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12438717 or 12438717. Listed at 9 retailers as of November 1, 2026, with prices from $604 to $4,790, a $4,186 spread on the same certified stone. Do Amore Diamonds lists it at $4,790. 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

3.16
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12438717
Dimensions8.56 × 8.46 × 5.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
8.56 mm8.46 mm3.16 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG12438717
Side View
Table 63.0%Crown 37°Girdle: STK-VTKPavilion 39.6°Culet: NoneDepth 66.9%

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 1
Current: $4,490 USD|Low: $432 USD|High: $4,790 USD|Avg: $1,677 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$604 USD
Retailer 2$847 USD
Retailer 7$953 USD
Retailer 8$987 USD
Retailer 4$990 USD
Retailer 5$1,035 USD
Retailer 3$3,207 USD
Do Amore Diamonds$4,490 USD

25 data points across 8 retailers

9 retailers$604 USD to $4,790 USD

A
Cheapest Retailer
-
$604 USD
Final sale: no returns
A
Retailer 2
-
$847 USD
£667 GBP
View
A
Retailer 3
-
$953 USD
View
A
Retailer 4
-
$987 USD
View
A
Retailer 5
-
$990 USD
View
B+
Retailer 6
-
$1,035 USD
View
B
Retailer 7
-
$3,207 USD
£2,525 GBP
View
B
Retailer 8
-
$4,490 USD
View
Most Expensive
B
Do Amore Diamonds
27-6C422EF65 · Nov 2
$4,790 USD
View
8 more retailers have this diamond
Prices start from $604 USDSave up to $4,186 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
3.16ct Cushion
$604 USD