Radiant|Lab Grown|IGI

1.09ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG783648796

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

Certificate IGI LG783648796

Diamond specifications and retailer prices

From $444 USD
As of November 1, 2026
Save $1,546 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,290 USD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 LG783648796 or 783648796. Listed at 11 retailers as of October 31, 2026, with a 348% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.6°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783648796
Dimensions7.28 × 5.01 × 3.41 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
7.28 mm5.01 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783648796
Side View
Table 67.0%Crown 29.6°Girdle: Slightly ThickPavilion 36.6°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,290 USD|Low: $364 USD|High: $2,890 USD|Avg: $1,332 USD|+9.8%
Rare Carat
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
November 1, 2026
Retailer 6$364 USD
Retailer 10$444 USD
Retailer 12$565 USD
Retailer 9$829 USD
Retailer 11$983 USD
Retailer 4$1,001 USD
Retailer 13$1,047 USD
Retailer 5$1,048 USD
Retailer 2$1,137 USD
Retailer 14$1,212 USD
Retailer 7$1,600 USD
Retailer 8$1,990 USD
Retailer 3$2,007 USD
Rare Carat$2,290 USD

18 data points across 14 retailers

11 retailers$444 USD to $1,990 USD

Retailer 1
-
$275 USD
Price last confirmed 30 days ago
Retailer 2
-
$332 USD
View
Price last confirmed 34 days ago
A
Retailer 3
-
$444 USD
View
B+
Retailer 4
-
$829 USD
View
Retailer 5
-
$881 USD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$983 USD
View
B+
Retailer 7
-
$1,137 USD
£895 GBP
View
Retailer 8
-
$1,260 USD
View
Price last confirmed 31 days ago
B
Retailer 9
-
$1,600 USD
View
B
Retailer 10
-
$1,990 USD
View
Most Expensive
Rare Carat
HL-178137 · Oct 18
$2,290 USD
View
Price last confirmed 13 days ago
10 more retailers have this diamond
Prices start from $444 USDSave up to $1,546 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
$444 USD