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Cushion|Lab Grown|IGI

1.35ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG815697990

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG815697990

Diamond specifications and retailer prices

From $704 USD
As of October 30, 2026
Save $2,436 USD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,140 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.35ct lab-grown cushion diamond

This 1.35ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815697990 or 815697990. Listed at 8 retailers as of October 30, 2026, with prices from $704 to $3,140, a $2,436 spread on the same certified stone. Do Amore Diamonds lists it at $3,140. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.35
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815697990
Dimensions6.37 × 6.30 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.37 mm6.30 mm1.35 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815697990
Side View
Table 57.0%Crown 34.2°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 64.0%

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: $3,140 USD|Low: $331 USD|High: $4,000 USD|Avg: $1,375 USD|-11.5%
Do Amore Diamonds
Retailer 2
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October 31, 2026
Retailer 7$331 USD
Retailer 4$355 USD
Retailer 10$704 USD
Retailer 5$751 USD
Retailer 12$775 USD
Retailer 8$876 USD
Retailer 15$890 USD
Retailer 16$916 USD
Retailer 3$1,000 USD
Retailer 2$1,160 USD
Retailer 13$1,336 USD
Retailer 6$1,809 USD
Retailer 11$1,923 USD
Retailer 14$1,980 USD
Retailer 9$2,300 USD
Do Amore Diamonds$3,140 USD

18 data points across 16 retailers

8 retailers$704 USD to $3,140 USD

A
Cheapest Retailer
-
$704 USD
A
Retailer 2
-
$775 USD
View
B+
Retailer 3
-
$1,160 USD
View
B+
Retailer 4
-
$1,336 USD
View
B+
Retailer 5
-
$1,923 USD
£1,514 GBP
View
Retailer 6
-
$1,980 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$2,300 USD
View
Most Expensive
B
Do Amore Diamonds
27-79D2587DD · Oct 30
$3,140 USD
View
7 more retailers have this diamond
Prices start from $704 USDSave up to $2,436 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
1.35ct Cushion
$704 USD