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Cushion|Lab Grown|IGI

2.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG750567725

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG750567725

Diamond specifications and retailer prices

From $410 USD
HK$3,200 HKD
As of October 30, 2026
Save $1,880 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,290 USD at Brilliant Earth · As of October 29, 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 LG750567725 or 750567725. Listed at 13 retailers as of October 29, 2026, with prices from $410 to $2,290, a $1,880 spread on the same certified stone. Brilliant Earth lists it at $2,290. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750567725
Dimensions9.02 × 6.93 × 4.41 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.02 mm6.93 mm2.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750567725
Side View
Table 64.0%Crown 35.1°Girdle: Slightly ThickPavilion 29.7°Culet: NoneDepth 63.6%

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 30
Current: $2,290 USD|Low: $335 USD|High: $2,290 USD|Avg: $1,012 USD
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
Retailer 14
October 29, 2026
Retailer 6$335 USD
Retailer 12$410 USD
Retailer 9$456 USD
Retailer 8$530 USD
Retailer 2$580 USD
Retailer 3$608 USD
Retailer 10$656 USD
Retailer 5$671 USD
Retailer 4$948 USD
Retailer 14$963 USD
Retailer 7$1,180 USD
Retailer 11$1,491 USD
Retailer 13$2,095 USD
Brilliant Earth$2,290 USD

40 data points across 14 retailers

13 retailers$410 USD to $2,290 USD

A
Cheapest Retailer
-
$410 USD
HK$3,200 HKD
A
Retailer 2
-
$456 USD
£359 GBP
View
A
Retailer 3
-
$530 USD
View
A
Retailer 4
-
$580 USD
€552 EUR
View
B+
Retailer 5
-
$608 USD
View
A
Retailer 6
-
$656 USD
£516 GBP
View
A
Retailer 7
-
$671 USD
View
B+
Retailer 8
-
$948 USD
View
B+
Retailer 9
-
$963 USD
View
B+
Retailer 10
-
$1,180 USD
SGD 1,595 SGD
View
B+
Retailer 11
-
$1,491 USD
£1,174 GBP
View
B
Retailer 12
-
$2,095 USD
View
Most Expensive
B
Brilliant Earth
16860144A · Oct 29
$2,290 USD
View
12 more retailers have this diamond
Prices start from $410 USDSave up to $1,880 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.

A
2.50ct Cushion
$410 USD