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Cushion|Lab Grown|IGI

10.26ct I VS1 Cushion Lab Grown Diamond

EX • I/VS1 • IGI LG605388797

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG605388797

Diamond specifications and retailer prices

From €1,970 EUR
$2,201 USD
As of October 31, 2026
Save €8,082 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €10,052 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.26ct lab-grown cushion diamond

This 10.26ct lab-grown cushion sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG605388797 or 605388797. Listed at 12 retailers as of October 31, 2026, with prices from €1,970 to €10,052, a €8,082 spread on the same certified stone. Brilliant Earth lists it at €10,052. 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

10.26
Carat
I
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle30.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605388797
Dimensions12.43 × 11.90 × 7.51 mm
L/W Ratio1.04
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
12.43 mm11.90 mm10.26 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605388797
Side View
Table 65.0%Crown 37.8°Girdle: MED-THKPavilion 30.7°Culet: NoneDepth 63.1%

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: €10,052 EUR|Low: €1,406 EUR|High: €10,365 EUR|Avg: €3,955 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 13€1,970 EUR
Retailer 10€2,041 EUR
Retailer 5€2,171 EUR
Retailer 9€2,188 EUR
Retailer 12€2,488 EUR
Retailer 8€3,053 EUR
Retailer 6€3,160 EUR
Retailer 11€3,196 EUR
Retailer 2€3,222 EUR
Retailer 3€3,874 EUR
Retailer 7€5,296 EUR
Retailer 4€7,145 EUR
Brilliant Earth€10,052 EUR

30 data points across 13 retailers

12 retailers€1,970 EUR to €10,052 EUR

A
Cheapest Retailer
-
€1,970 EUR
$2,201 USD
Final sale: no returns
Retailer 2
-
€2,041 EUR
$2,280 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
€2,188 EUR
$2,445 USD
View
A
Retailer 4
-
€2,488 EUR
$2,780 USD
View
A
Retailer 5
-
€3,053 EUR
$3,411 USD
View
A
Retailer 6
-
€3,160 EUR
ZAR 57,031 ZAR
View
A
Retailer 7
-
€3,196 EUR
$3,571 USD
View
A
Retailer 8
-
€3,222 EUR
View
Retailer 9
-
€3,874 EUR
£3,408 GBP
View
Price last confirmed 10 days ago
B+
Retailer 10
-
€5,296 EUR
$5,917 USD
View
B+
Retailer 11
-
€7,145 EUR
$7,983 USD
View
Most Expensive
B
Brilliant Earth
20602013A · Oct 31
€10,052 EUR
$11,230 USD
View
11 more retailers have this diamond
Prices start from €1,970 EURSave up to €8,082 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
10.26ct Cushion
€1,970 EUR