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Radiant|Lab Grown|IGI

1.09ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG831604024

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

Certificate IGI LG831604024

Diamond specifications and retailer prices

From $279 USD
As of November 1, 2026
Save $1,981 USD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,260 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831604024 or 831604024. Listed at 22 retailers as of October 31, 2026, with prices from $279 to $2,260, a $1,981 spread on the same certified stone. Brilliant Earth lists it at $2,260. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604024
Dimensions7.72 × 5.14 × 3.34 mm
L/W Ratio1.50
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
7.72 mm5.14 mm1.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604024
Side View
Table 63.0%Crown 36.4°Girdle: THN-MEDPavilion 36.1°Culet: NoneDepth 65.0%

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: Nov 1
Current: $2,260 USD|Low: $279 USD|High: $2,840 USD|Avg: $837 USD|-20.4%
Brilliant Earth
Retailer 2
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Retailer 21
November 1, 2026
Retailer 5$279 USD
Retailer 4$290 USD
Retailer 16$310 USD
Retailer 13$319 USD
Retailer 14$325 USD
Retailer 21$346 USD
Retailer 9$425 USD
Retailer 18$542 USD
Retailer 6$555 USD
Retailer 15$590 USD
Retailer 19$643 USD
Retailer 20$652 USD
Retailer 10$692 USD
Retailer 7$833 USD
Retailer 11$951 USD
Retailer 17$996 USD
Retailer 3$1,048 USD
Retailer 8$1,085 USD
Retailer 2$1,353 USD
Retailer 12$1,623 USD
Brilliant Earth$2,260 USD

31 data points across 21 retailers

22 retailers$279 USD to $2,260 USD

A
Cheapest Retailer
-
$279 USD
Final sale: no returns
A
Retailer 2
-
$290 USD
View
A
Retailer 3
-
$310 USD
View
A
Retailer 4
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$319 USD
£251 GBP
View
A
Retailer 5
-
$325 USD
View
A
Retailer 6
-
$346 USD
HK$2,700 HKD
View
Retailer 7
-
$403 USD
View
Price last confirmed 7 days ago
A
Retailer 8
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$425 USD
View
A
Retailer 9
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$542 USD
View
A
Retailer 10
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$555 USD
View
A
Retailer 11
-
$590 USD
£464 GBP
View
B+
Retailer 12
-
$643 USD
View
B+
Retailer 13
-
$652 USD
€621 EUR
View
B+
Retailer 14
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$692 USD
ZAR 11,183 ZAR
View
B+
Retailer 15
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$833 USD
SGD 1,126 SGD
View
B+
Retailer 16
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$951 USD
View
B+
Retailer 17
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$996 USD
View
B+
Retailer 18
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$1,048 USD
View
B
Retailer 19
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$1,085 USD
View
B
Retailer 20
-
$1,353 USD
View
B
Retailer 21
-
$1,623 USD
£1,278 GBP
View
Most Expensive
B
Brilliant Earth
21605275A · Oct 31
$2,260 USD
View
21 more retailers have this diamond
Prices start from $279 USDSave up to $1,981 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
1.09ct Radiant
$279 USD