Cushion|Lab Grown|IGI

1.31ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG579399923

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG579399923

Diamond specifications and retailer prices

From $284 USD
£223 GBP
As of October 30, 2026
Save $1,336 USD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,620 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG579399923 or 579399923. Listed at 10 retailers as of October 30, 2026, with prices from $284 to $1,620, a $1,336 spread on the same certified stone. Do Amore Diamonds lists it at $1,620. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579399923
Dimensions6.46 × 6.35 × 4.14 mm
L/W Ratio1.02
Girdle conditionFaceted
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
6.46 mm6.35 mm1.31 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579399923
Side View
Table 60.0%Crown 32.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 65.2%

Caratlytics Score

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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: $1,620 USD|Low: $284 USD|High: $1,620 USD|Avg: $672 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5$284 USD
Retailer 9$375 USD
Retailer 7$386 USD
Retailer 2$389 USD
Retailer 3$418 USD
Retailer 4$710 USD
Retailer 8$916 USD
Retailer 6$1,086 USD
Do Amore Diamonds$1,620 USD

6 data points across 9 retailers

10 retailers$284 USD to $1,620 USD

A
Cheapest Retailer
-
$284 USD
£223 GBP
B+
Retailer 2
-
$375 USD
View
A
Retailer 3
-
$386 USD
View
A
Retailer 4
-
$389 USD
€370 EUR
View
A
Retailer 5
-
$418 USD
£329 GBP
View
B+
Retailer 6
-
$710 USD
View
Retailer 7
-
$810 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$916 USD
View
B
Retailer 9
-
$1,086 USD
£855 GBP
View
Most Expensive
B
Do Amore Diamonds
27-6149F0C67 · Oct 31
$1,620 USD
View
9 more retailers have this diamond
Prices start from $284 USDSave up to $1,336 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
1.31ct Cushion
$284 USD