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Cushion|Lab Grown|IGI

0.99ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG662438887

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG662438887

Diamond specifications and retailer prices

From $377 USD
As of October 30, 2026
Save $1,333 USD (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,710 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG662438887 or 662438887. Listed at 18 retailers as of October 30, 2026, with prices from $377 to $1,710, a $1,333 spread on the same certified stone. Brilliant Earth lists it at $1,710. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.99
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662438887
Dimensions6.99 × 5.37 × 3.51 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
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
6.99 mm5.37 mm0.99 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662438887
Side View
Table 61.0%Crown 35°Girdle: MED-THKPavilion 34.8°Culet: NoneDepth 65.4%

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: $1,710 USD|Low: $374 USD|High: $1,730 USD|Avg: $1,000 USD|-1.2%
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
Retailer 15
Retailer 16
November 1, 2026
Retailer 11$377 USD
Retailer 3$418 USD
Retailer 16$654 USD
Retailer 15$666 USD
Retailer 5$675 USD
Retailer 10$693 USD
Retailer 9$744 USD
Retailer 13$757 USD
Retailer 12$1,039 USD
Retailer 4$1,089 USD
Retailer 8$1,237 USD
Retailer 14$1,250 USD
Retailer 7$1,388 USD
Retailer 6$1,632 USD
Retailer 2$1,676 USD
Brilliant Earth$1,710 USD

34 data points across 16 retailers

18 retailers$377 USD to $1,710 USD

A
Cheapest Retailer
-
$377 USD
Final sale: no returns
A
Retailer 2
-
$418 USD
View
A
Retailer 3
-
$654 USD
View
A
Retailer 4
-
$666 USD
View
A
Retailer 5
-
$675 USD
View
A
Retailer 6
-
$693 USD
€660 EUR
View
A
Retailer 7
-
$744 USD
£586 GBP
View
A
Retailer 8
-
$757 USD
ZAR 12,227 ZAR
View
A
Retailer 9
-
$1,039 USD
A$1,598 AUD
View
B+
Retailer 10
-
$1,089 USD
View
Retailer 11
-
$1,237 USD
A$1,903 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
$1,250 USD
View
Price last confirmed 13 days ago
Retailer 13
-
$1,335 USD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
$1,388 USD
View
B+
Retailer 15
-
$1,588 USD
View
B
Retailer 16
-
$1,632 USD
View
B+
Retailer 17
-
$1,676 USD
£1,320 GBP
View
Most Expensive
B+
Brilliant Earth
14718846A · Oct 31
$1,710 USD
View
17 more retailers have this diamond
Prices start from $377 USDSave up to $1,333 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
0.99ct Cushion
$377 USD