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Radiant|Lab Grown|IGI

1.18ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG729590710

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG729590710

Diamond specifications and retailer prices

From $197 USD
As of November 2, 2026
Save $1,473 USD (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,670 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.18ct lab-grown radiant diamond

This 1.18ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729590710 or 729590710. Listed at 21 retailers as of November 2, 2026, with prices from $197 to $1,670, a $1,473 spread on the same certified stone. Brilliant Earth lists it at $1,670. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.4°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729590710
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
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
10.37 mm7.13 mm1.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729590710
Side View
Table 65.0%Crown 47.4°Girdle: Slightly ThickPavilion 37.3°Culet: NoneDepth 72.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $1,670 USD|Low: $189 USD|High: $2,780 USD|Avg: $648 USD|-39.9%
Brilliant Earth
Retailer 2
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Retailer 20
November 2, 2026
Retailer 4$197 USD
Retailer 18$220 USD
Retailer 10$229 USD
Retailer 5$245 USD
Retailer 12$245 USD
Retailer 17$410 USD
Retailer 15$422 USD
Retailer 7$426 USD
Retailer 14$447 USD
Retailer 9$488 USD
Retailer 13$597 USD
Retailer 2$633 USD
Retailer 8$717 USD
Retailer 6$786 USD
Retailer 11$840 USD
Retailer 20$867 USD
Retailer 3$923 USD
Retailer 16$1,143 USD
Retailer 19$1,365 USD
Brilliant Earth$1,670 USD

42 data points across 20 retailers

21 retailers$197 USD to $1,670 USD

A
Cheapest Retailer
-
$197 USD
A
Retailer 2
-
$220 USD
View
Final sale: no returns
A
Retailer 3
-
$229 USD
View
A
Retailer 4
-
$245 USD
View
Retailer 5
-
$245 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$410 USD
€390 EUR
View
A
Retailer 7
-
$422 USD
ZAR 6,822 ZAR
View
A
Retailer 8
-
$426 USD
View
A
Retailer 9
-
$447 USD
£352 GBP
View
A
Retailer 10
-
$488 USD
View
A
Retailer 11
-
$597 USD
A$918 AUD
View
A
Retailer 12
-
$633 USD
View
B+
Retailer 13
-
$717 USD
View
B+
Retailer 14
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$786 USD
View
B+
Retailer 15
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$840 USD
View
B+
Retailer 16
-
$867 USD
SGD 1,171 SGD
View
B+
Retailer 17
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$914 USD
View
B+
Retailer 18
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$1,143 USD
£900 GBP
View
Retailer 19
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$1,365 USD
View
Price last confirmed 12 days ago
Retailer 20
-
$1,626 USD
View
Most Expensive
B
Brilliant Earth
21417298A · Nov 2
$1,670 USD
View
20 more retailers have this diamond
Prices start from $197 USDSave up to $1,473 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
1.18ct Radiant
$197 USD