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Radiant|Lab Grown|IGI

1.09ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG817693445

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

Certificate IGI LG817693445

Diamond specifications and retailer prices

From $383 USD
As of October 30, 2026
Save $2,457 USD (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,840 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 LG817693445 or 817693445. Listed at 21 retailers as of October 30, 2026, with prices from $383 to $2,840, a $2,457 spread on the same certified stone. Brilliant Earth lists it at $2,840. 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 angle40.3°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693445
Dimensions7.52 × 5.14 × 3.30 mm
L/W Ratio1.46
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
7.52 mm5.14 mm1.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693445
Side View
Table 63.0%Crown 40.3°Girdle: Slightly ThickPavilion 33.7°Culet: NoneDepth 64.2%

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: $2,840 USD|Low: $378 USD|High: $2,840 USD|Avg: $1,019 USD
Brilliant Earth
Retailer 2
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Retailer 21
November 1, 2026
Retailer 5$383 USD
Retailer 8$428 USD
Retailer 20$429 USD
Retailer 4$475 USD
Retailer 7$475 USD
Retailer 2$489 USD
Retailer 19$525 USD
Retailer 17$625 USD
Retailer 3$689 USD
Retailer 9$755 USD
Retailer 15$761 USD
Retailer 16$816 USD
Retailer 13$860 USD
Retailer 12$1,260 USD
Retailer 21$1,332 USD
Retailer 10$1,387 USD
Retailer 6$1,527 USD
Retailer 14$1,565 USD
Retailer 11$1,778 USD
Retailer 18$1,858 USD
Brilliant Earth$2,840 USD

36 data points across 21 retailers

21 retailers$383 USD to $2,840 USD

A
Cheapest Retailer
-
$383 USD
A
Retailer 2
-
$428 USD
View
Final sale: no returns
A
Retailer 3
-
$429 USD
View
Retailer 4
-
$475 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$475 USD
View
A
Retailer 6
-
$489 USD
£385 GBP
View
A
Retailer 7
-
$525 USD
HK$4,100 HKD
View
A
Retailer 8
-
$625 USD
View
B+
Retailer 9
-
$689 USD
View
B+
Retailer 10
-
$755 USD
View
B+
Retailer 11
-
$761 USD
€725 EUR
View
B+
Retailer 12
-
$816 USD
ZAR 13,185 ZAR
View
B+
Retailer 13
-
$860 USD
£677 GBP
View
B+
Retailer 14
-
$1,260 USD
SGD 1,703 SGD
View
B+
Retailer 15
-
$1,332 USD
View
B
Retailer 16
-
$1,387 USD
£1,092 GBP
View
B
Retailer 17
-
$1,527 USD
View
B
Retailer 18
-
$1,565 USD
View
B
Retailer 19
-
$1,778 USD
View
B
Retailer 20
-
$1,858 USD
£1,463 GBP
View
Most Expensive
B
Brilliant Earth
20860153A · Oct 31
$2,840 USD
View
20 more retailers have this diamond
Prices start from $383 USDSave up to $2,457 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
$383 USD