Radiant|Lab Grown|IGI

8.18ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG575374168

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

Certificate IGI LG575374168

Diamond specifications and retailer prices

From $1,145 USD
As of October 30, 2026
Save $5,233 USD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,378 USD at With Clarity · As of October 31, 2026
View at With Clarity

About this 8.18ct lab-grown radiant diamond

This 8.18ct lab-grown radiant sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG575374168 or 575374168. Listed at 22 retailers as of October 30, 2026, with prices from $1,145 to $6,378, a $5,233 spread on the same certified stone. With Clarity lists it at $6,378. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

8.18
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG575374168
Dimensions13.51 × 9.63 × 6.90 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
13.51 mm9.63 mm8.18 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG575374168
Side View
Table 64.0%Crown 41.2°Girdle: Slightly ThickPavilion 32.8°Culet: NoneDepth 71.7%

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: Oct 30
Current: $2,375 USD|Low: $1,099 USD|High: $6,430 USD|Avg: $2,764 USD|-0.2%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
With Clarity
October 31, 2026
Retailer 2$1,145 USD
Retailer 7$1,245 USD
Retailer 3$1,281 USD
Retailer 5$1,328 USD
Retailer 8$1,328 USD
Retailer 15$1,500 USD
Retailer 12$1,585 USD
Retailer 9$1,861 USD
Retailer 16$1,890 USD
Retailer 17$2,004 USD
Retailer 14$2,227 USD
Retailer 1$2,375 USD
Retailer 18$2,458 USD
Retailer 6$2,489 USD
Retailer 11$3,239 USD
Retailer 10$3,658 USD
Retailer 19$4,013 USD
Retailer 13$4,289 USD
Retailer 4$6,160 USD
With Clarity$6,250 USD

41 data points across 20 retailers

22 retailers$1,145 USD to $6,378 USD

A
Cheapest Retailer
-
$1,145 USD
A
Retailer 2
-
$1,245 USD
View
A
Retailer 3
-
$1,281 USD
View
Final sale: no returns
A
Retailer 4
-
$1,328 USD
View
Retailer 5
-
$1,328 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$1,500 USD
View
A
Retailer 7
-
$1,585 USD
£1,248 GBP
View
A
Retailer 8
-
$1,861 USD
View
B+
Retailer 9
-
$1,890 USD
View
Retailer 10
-
$2,004 USD
€1,909 EUR
View
Price last confirmed 8 days ago
A
Retailer 11
-
$2,227 USD
ZAR 35,975 ZAR
View
A
Retailer 12
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$2,375 USD
View
Retailer 13
-
$2,458 USD
A$3,782 AUD
View
Price last confirmed 9 days ago
A
Retailer 14
-
$2,489 USD
View
B+
Retailer 15
-
$3,239 USD
View
B+
Retailer 16
-
$3,260 USD
View
B+
Retailer 17
-
$3,658 USD
£2,880 GBP
View
B+
Retailer 18
-
$4,013 USD
View
B+
Retailer 19
-
$4,289 USD
£3,377 GBP
View
B
Retailer 20
-
$4,647 USD
View
B
Retailer 21
-
$6,160 USD
View
Most Expensive
B
With Clarity
575374168 · Oct 31
$6,378 USD
View
21 more retailers have this diamond
Prices start from $1,145 USDSave up to $5,233 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
8.18ct Radiant
$1,145 USD