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Cushion|Lab Grown|IGI

3.17ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG557245545

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

Certificate IGI LG557245545

Diamond specifications and retailer prices

From $942 USD
As of November 6, 2026
Save $1,574 USD (63%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,516 USD at MOH London · As of November 5, 2026
View at MOH London

About this 3.17ct lab-grown cushion diamond

This 3.17ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG557245545 or 557245545. Listed at 4 retailers as of November 5, 2026, with prices from $942 to $2,516, a $1,574 spread on the same certified stone. MOH London lists it at $2,516. 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

3.17
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557245545
Dimensions8.49 × 8.10 × 5.37 mm
L/W Ratio1.05
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
8.49 mm8.10 mm3.17 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557245545
Side View
Table 60.5%Crown 35.1°Girdle: STK-THKPavilion 35.9°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,516 USD|Low: $917 USD|High: $2,553 USD|Avg: $1,403 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$942 USD
Retailer 2$994 USD
Retailer 4$1,136 USD
MOH London$2,516 USD

42 data points across 4 retailers

4 retailers$942 USD to $2,516 USD

B+
Cheapest Retailer
-
$942 USD
A
Retailer 2
-
$994 USD
View
B+
Retailer 3
-
$1,136 USD
View
Most Expensive
B
MOH London
LG557245545 · Nov 5
$2,516 USD
£1,981 GBP
View
3 more retailers have this diamond
Prices start from $942 USDSave up to $1,574 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
3.17ct Cushion
$942 USD