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Cushion|Lab Grown|IGI

3.18ct J VS1 Cushion Lab Grown Diamond

GD • J/VS1 • IGI LG476178000

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG476178000

Diamond specifications and retailer prices

From $2,590 USD
As of October 31, 2026
Save $5,110 USD (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,700 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG476178000 or 476178000. Listed at 7 retailers as of October 29, 2026, with prices from $2,590 to $7,700, a $5,110 spread on the same certified stone. MOH London lists it at $7,700. 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

3.18
Carat
J
Color
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476178000
Dimensions9.74 × 7.88 × 5.33 mm
L/W Ratio1.24
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
9.74 mm7.88 mm3.18 ctJ / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG476178000
Side View
Table 59.0%Crown 36.1°Girdle: STK-VTKPavilion 36.7°Culet: NoneDepth 67.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $7,700 USD|Low: $2,590 USD|High: $7,762 USD|Avg: $4,090 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 7$2,590 USD
Retailer 4$2,761 USD
Retailer 5$3,025 USD
Retailer 9$3,049 USD
Retailer 6$3,664 USD
Retailer 8$3,686 USD
Retailer 3$4,459 USD
Retailer 2$6,643 USD
MOH London$7,700 USD

16 data points across 9 retailers

7 retailers$2,590 USD to $7,700 USD

B
Cheapest Retailer
-
$2,590 USD
B
Retailer 2
-
$2,761 USD
View
Final sale: no returns
B
Retailer 3
-
$3,025 USD
View
B
Retailer 4
-
$3,664 USD
CA$5,089 CAD
View
B
Retailer 5
-
$4,459 USD
View
B
Retailer 6
-
$6,643 USD
ZAR 107,318 ZAR
View
Most Expensive
C
MOH London
LG476178000 · Oct 29
$7,700 USD
£6,063 GBP
View
6 more retailers have this diamond
Prices start from $2,590 USDSave up to $5,110 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.

B
3.18ct Cushion
$2,590 USD