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Cushion|Lab Grown|IGI

3.18ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG831678522

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG831678522

Diamond specifications and retailer prices

From €1,353 EUR
$1,512 USD
As of October 31, 2026
Save €3,565 EUR (72%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €4,918 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831678522 or 831678522. Listed at 11 retailers as of October 31, 2026, with prices from €1,353 to €4,918, a €3,565 spread on the same certified stone. Taylor and Hart lists it at €4,918. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.18
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831678522
Dimensions10.91 × 7.38 × 4.85 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.91 mm7.38 mm3.18 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831678522
Side View
Table 49.0%Crown 37.5°Girdle: STK-VTKPavilion 35.1°Culet: LargeDepth 65.7%

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: Oct 31
Current: €2,032 EUR|Low: €1,318 EUR|High: €5,366 EUR|Avg: €2,535 EUR|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
October 31, 2026
Retailer 4€1,353 EUR
Retailer 2€1,478 EUR
Retailer 9€1,524 EUR
Retailer 6€1,553 EUR
Retailer 3€1,673 EUR
Retailer 8€1,824 EUR
Retailer 1€2,032 EUR
Retailer 5€3,250 EUR
Retailer 7€3,374 EUR
Retailer 10€4,269 EUR
Taylor and Hart€4,918 EUR

29 data points across 11 retailers

11 retailers€1,353 EUR to €4,918 EUR

A
Cheapest Retailer
-
€1,353 EUR
$1,512 USD
B+
Retailer 2
-
€1,478 EUR
HK$12,900 HKD
View
Retailer 3
-
€1,524 EUR
$1,703 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
€1,553 EUR
$1,735 USD
View
B+
Retailer 5
-
€1,673 EUR
$1,869 USD
View
B+
Retailer 6
-
€1,824 EUR
$2,038 USD
View
B
Retailer 7
-
€2,032 EUR
View
B
Retailer 8
-
€3,250 EUR
ZAR 58,653 ZAR
View
B
Retailer 9
-
€3,374 EUR
$3,770 USD
View
B
Retailer 10
-
€4,269 EUR
SGD 6,445 SGD
View
Most Expensive
B
Taylor and Hart
ELF52IJ · Oct 31
€4,918 EUR
$5,494 USD
View
10 more retailers have this diamond
Prices start from €1,353 EURSave up to €3,565 EUR

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
3.18ct Cushion
€1,353 EUR