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Cushion|Lab Grown|IGI

2.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG835634290

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG835634290

Diamond specifications and retailer prices

From €390 EUR
HK$3,400 HKD
As of October 31, 2026
Save €1,660 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €2,050 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.5ct lab-grown cushion diamond

This 2.5ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG835634290 or 835634290. Listed at 12 retailers as of October 31, 2026, with prices from €390 to €2,050, a €1,660 spread on the same certified stone. Brilliant Earth lists it at €2,050. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.50
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle31.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835634290
Dimensions9.32 × 7.05 × 4.44 mm
L/W Ratio1.32
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.32 mm7.05 mm2.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835634290
Side View
Table 64.0%Crown 33.5°Girdle: MED-THKPavilion 31.7°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €2,050 EUR|Low: €322 EUR|High: €3,527 EUR|Avg: €1,038 EUR|-41.9%
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 5€322 EUR
Retailer 7€390 EUR
Retailer 12€440 EUR
Retailer 3€542 EUR
Retailer 2€552 EUR
Retailer 13€580 EUR
Retailer 9€635 EUR
Retailer 4€852 EUR
Retailer 6€874 EUR
Retailer 8€1,135 EUR
Retailer 11€1,441 EUR
Retailer 10€1,875 EUR
Brilliant Earth€2,050 EUR

39 data points across 13 retailers

12 retailers€390 EUR to €2,050 EUR

A
Cheapest Retailer
-
€390 EUR
HK$3,400 HKD
Retailer 2
-
€440 EUR
£387 GBP
View
Price last confirmed 15 days ago
A
Retailer 3
-
€542 EUR
$605 USD
View
A
Retailer 4
-
€552 EUR
View
B+
Retailer 5
-
€580 EUR
$648 USD
View
A
Retailer 6
-
€635 EUR
£559 GBP
View
B+
Retailer 7
-
€852 EUR
$952 USD
View
B+
Retailer 8
-
€874 EUR
$976 USD
View
B+
Retailer 9
-
€1,135 EUR
SGD 1,713 SGD
View
Retailer 10
-
€1,441 EUR
£1,268 GBP
View
Price last confirmed 11 days ago
B
Retailer 11
-
€1,875 EUR
$2,095 USD
View
Most Expensive
B
Brilliant Earth
21435744A · Oct 31
€2,050 EUR
$2,290 USD
View
11 more retailers have this diamond
Prices start from €390 EURSave up to €1,660 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
2.50ct Cushion
€390 EUR