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 $10,798 CAD
$7,730 USD
As of October 31, 2026
Save $30,201 CAD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $40,999 CAD at Brilliant Earth · As of October 29, 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 10 retailers as of October 29, 2026, with prices from $10,798 to $40,999, a $30,201 spread on the same certified stone. Brilliant Earth lists it at $40,999. 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
Color
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: Oct 31
Current: $40,999 CAD|Low: $10,798 CAD|High: $42,773 CAD|Avg: $22,082 CAD|-4.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$10,798 CAD
Retailer 7$11,707 CAD
Retailer 3$13,627 CAD
Retailer 5$16,029 CAD
Retailer 4$16,782 CAD
Retailer 2$19,817 CAD
Retailer 6$20,753 CAD
Retailer 9$27,610 CAD
Retailer 10$37,219 CAD
Brilliant Earth$40,999 CAD

43 data points across 10 retailers

10 retailers$10,798 CAD to $40,999 CAD

B+
Cheapest Retailer
-
$10,798 CAD
$7,730 USD
B+
Retailer 2
-
$11,707 CAD
$8,381 USD
View
B+
Retailer 3
-
$13,627 CAD
£7,681 GBP
View
B
Retailer 4
-
$16,029 CAD
$11,475 USD
View
B+
Retailer 5
-
$16,782 CAD
ZAR 194,084 ZAR
View
B
Retailer 6
-
$19,817 CAD
€13,511 EUR
View
Retailer 7
-
$20,753 CAD
A$22,856 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$27,610 CAD
$19,765 USD
View
B
Retailer 9
-
$37,219 CAD
$26,644 USD
View
Most Expensive
B
Brilliant Earth
21633058A · Oct 29
$40,999 CAD
$29,350 USD
View
9 more retailers have this diamond
Prices start from $10,798 CADSave up to $30,201 CAD

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
$10,798 CAD