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Cushion|Lab Grown|IGI

2.70ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG519231185

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG519231185

Diamond specifications and retailer prices

From $2,120 USD
As of October 31, 2026
Save $4,298 USD (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,733 USD at Loose Grown Diamond · As of November 1, 2026
View at Loose Grown Diamond

About this 2.7ct lab-grown cushion diamond

This 2.7ct lab-grown cushion sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG519231185 or 519231185. Listed at 7 retailers as of October 31, 2026, with a 203% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.70
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519231185
Dimensions8.29 × 7.89 × 4.90 mm
L/W Ratio1.05
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
8.29 mm7.89 mm2.70 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519231185
Side View
Table 64.0%Crown 32.7°Girdle: STK-VTKPavilion 34.6°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $7,733 USD|Low: $2,120 USD|High: $10,484 USD|Avg: $5,961 USD|+0.3%
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$2,120 USD
Retailer 6$4,823 USD
Retailer 5$4,996 USD
Retailer 7$5,040 USD
Retailer 2$6,418 USD
Loose Grown Diamond$7,733 USD
Retailer 3$10,345 USD

39 data points across 7 retailers

7 retailers$2,120 USD to $6,418 USD

B+
Cheapest Retailer
-
$2,120 USD
B
Retailer 2
-
$4,823 USD
View
Final sale: no returns
Retailer 3
-
$4,996 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
$5,040 USD
View
B
Retailer 5
-
$6,418 USD
£5,054 GBP
View
Most Expensive
Loose Grown Diamond
519231185 · Nov 1
$7,733 USD
View
Price under review
5 more retailers have this diamond
Prices start from $2,120 USDSave up to $4,298 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.

B+
2.70ct Cushion
$2,120 USD