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Radiant|Lab Grown|IGI

18.07ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG830673978

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

Certificate IGI LG830673978

Diamond specifications and retailer prices

From €6,892 EUR
$7,730 USD
As of November 2, 2026
Save €19,276 EUR (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €26,168 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 18.07ct lab-grown radiant diamond

This 18.07ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG830673978 or 830673978. Listed at 11 retailers as of November 2, 2026, with prices from €6,892 to €26,168, a €19,276 spread on the same certified stone. Brilliant Earth lists it at €26,168. 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

18.07
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.9°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830673978
Dimensions17.72 × 12.54 × 8.47 mm
L/W Ratio1.41
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.72 mm12.54 mm18.07 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830673978
Side View
Table 65.0%Crown 49.9°Girdle: Slightly ThickPavilion 32.7°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €26,168 EUR|Low: €6,892 EUR|High: €27,300 EUR|Avg: €14,022 EUR|-4.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8€6,892 EUR
Retailer 2€7,555 EUR
Retailer 4€8,625 EUR
Retailer 7€10,231 EUR
Retailer 6€10,711 EUR
Retailer 3€12,646 EUR
Retailer 5€13,224 EUR
Retailer 9€17,622 EUR
Retailer 10€23,755 EUR
Brilliant Earth€26,168 EUR

43 data points across 10 retailers

11 retailers€6,892 EUR to €26,168 EUR

B+
Cheapest Retailer
-
€6,892 EUR
$7,730 USD
B+
Retailer 2
-
€7,555 EUR
$8,474 USD
View
B+
Retailer 3
-
€8,625 EUR
£7,617 GBP
View
Retailer 4
-
€9,428 EUR
$10,575 USD
View
Price last confirmed 12 days ago
B
Retailer 5
-
€10,231 EUR
$11,475 USD
View
B+
Retailer 6
-
€10,711 EUR
ZAR 194,084 ZAR
View
B
Retailer 7
-
€12,646 EUR
View
B
Retailer 8
-
€13,224 EUR
A$22,818 AUD
View
B
Retailer 9
-
€17,622 EUR
$19,765 USD
View
B
Retailer 10
-
€23,755 EUR
$26,644 USD
View
Most Expensive
B
Brilliant Earth
21633058A · Nov 2
€26,168 EUR
$29,350 USD
View
10 more retailers have this diamond
Prices start from €6,892 EURSave up to €19,276 EUR

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.

B+
18.07ct Radiant
€6,892 EUR