Cushion|Lab Grown|IGI

1.79ct H SI1 Cushion Lab Grown Diamond

ID • H/SI1 • IGI LG647403773

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG647403773

Diamond specifications and retailer prices

From $1,240 USD
As of October 28, 2026
3 retailers carry this diamond
Most expensive: $1,240 USD at Brilliant Earth
View at Brilliant Earth

About this 1.79ct lab-grown cushion diamond

This 1.79ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647403773 or 647403773. Listed at 3 retailers as of October 28, 2026. 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

1.79
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647403773
Dimensions8.58 × 6.16 × 4.20 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.58 mm6.16 mm1.79 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647403773
Side View
Table 62.0%Crown 35.5°Girdle: MED-THKPavilion 35.4°Culet: NoneDepth 68.2%

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 28
Current: $1,240 USD|Low: $403 USD|High: $1,260 USD|Avg: $725 USD|-1.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 24, 2026
Retailer 6$403 USD
Retailer 2$403 USD
Retailer 5$609 USD
Retailer 7$639 USD
Retailer 4$847 USD
Retailer 3$955 USD
Brilliant Earth$1,240 USD

4 data points across 7 retailers

3 retailers

A
Retailer 1
-
$955 USD
Price last confirmed 34 days ago
B+
Retailer 2
-
$966 USD
View
Price last confirmed 80 days ago
Most Expensive
B+
Brilliant Earth
14251194A · Oct 28
$1,240 USD
View
2 more retailers have this diamond

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
1.79ct Cushion
$1,240 USD