Radiant|Lab Grown|IGI

1.18ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG811638307

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

Certificate IGI LG811638307

Diamond specifications and retailer prices

From $314 USD
£247 GBP
As of October 30, 2026
Save $1,816 USD (85%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,500 USD at Rare Carat · As of October 21, 2026
View at Rare Carat

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638307 or 811638307. Listed at 8 retailers as of October 30, 2026, with a 578% 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

1.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638307
Dimensions7.39 × 5.20 × 3.60 mm
L/W Ratio1.42
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
7.39 mm5.20 mm1.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638307
Side View
Table 63.0%Crown 44°Girdle: MediumPavilion 35.4°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
A+
Exceptional
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: Oct 30
Current: $2,500 USD|Low: $251 USD|High: $3,040 USD|Avg: $1,067 USD|+9.9%
Rare Carat
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 16
October 30, 2026
Retailer 4$251 USD
Retailer 7$283 USD
Retailer 9$314 USD
Retailer 16$440 USD
Retailer 13$471 USD
Retailer 5$716 USD
Retailer 3$730 USD
Retailer 15$770 USD
Retailer 6$773 USD
Retailer 12$889 USD
Retailer 14$1,039 USD
Retailer 10$1,226 USD
Retailer 8$1,460 USD
Retailer 2$1,850 USD
Retailer 11$2,130 USD
Rare Carat$2,500 USD

19 data points across 16 retailers

8 retailers$314 USD to $2,130 USD

A+
Cheapest Retailer
-
$314 USD
£247 GBP
A
Retailer 2
-
$471 USD
View
B+
Retailer 3
-
$889 USD
View
B+
Retailer 4
-
$1,039 USD
View
B+
Retailer 5
-
$1,226 USD
£965 GBP
View
B
Retailer 6
-
$1,850 USD
View
B
Retailer 7
-
$2,130 USD
View
Most Expensive
Rare Carat
PD-223068 · Oct 21
$2,500 USD
View
Price last confirmed 10 days ago
7 more retailers have this diamond
Prices start from $314 USDSave up to $1,816 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
$314 USD