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Cushion|Lab Grown|IGI

3.17ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG11865603

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG11865603

Diamond specifications and retailer prices

From €815 EUR
$911 USD
As of November 1, 2026
Save €1,574 EUR (66%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €2,390 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.17ct lab-grown cushion diamond

This 3.17ct 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 LG11865603 or 11865603. Listed at 2 retailers as of October 31, 2026, with prices from €815 to €2,390, a €1,574 spread on the same certified stone. Brilliant Earth lists it at €2,390. 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

3.17
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG11865603
Dimensions8.48 × 8.47 × 5.65 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
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Top View
8.48 mm8.47 mm3.17 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG11865603
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €2,390 EUR|Low: €769 EUR|High: €2,390 EUR|Avg: €1,695 EUR|+7.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
September 23, 2026
Retailer 3€808 EUR
Retailer 2€815 EUR
Retailer 4€2,264 EUR
Brilliant Earth€2,390 EUR

10 data points across 4 retailers

2 retailers€815 EUR to €2,390 EUR

A
Cheapest Retailer
-
€815 EUR
$911 USD
Most Expensive
B
Brilliant Earth
3880907Y · Oct 31
€2,390 EUR
$2,670 USD
View
1 more retailer has this diamond
Prices start from €815 EURSave up to €1,574 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
3.17ct Cushion
€815 EUR