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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 $9,886 SGD
$7,730 USD
As of November 2, 2026
Save $27,650 SGD (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $37,536 SGD 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 10 retailers as of November 2, 2026, with prices from $9,886 to $37,536, a $27,650 spread on the same certified stone. Brilliant Earth lists it at $37,536. 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: $37,536 SGD|Low: $9,886 SGD|High: $39,160 SGD|Avg: $20,114 SGD|-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$9,886 SGD
Retailer 2$10,837 SGD
Retailer 4$12,372 SGD
Retailer 7$14,675 SGD
Retailer 6$15,364 SGD
Retailer 3$18,139 SGD
Retailer 5$18,968 SGD
Retailer 9$25,277 SGD
Retailer 10$34,075 SGD
Brilliant Earth$37,536 SGD

43 data points across 10 retailers

10 retailers$9,886 SGD to $37,536 SGD

B+
Cheapest Retailer
-
$9,886 SGD
$7,730 USD
B+
Retailer 2
-
$10,837 SGD
$8,474 USD
View
B+
Retailer 3
-
$12,372 SGD
£7,617 GBP
View
B
Retailer 4
-
$14,675 SGD
$11,475 USD
View
B+
Retailer 5
-
$15,364 SGD
ZAR 194,084 ZAR
View
B
Retailer 6
-
$18,139 SGD
€13,508 EUR
View
B
Retailer 7
-
$18,968 SGD
A$22,818 AUD
View
B
Retailer 8
-
$25,277 SGD
$19,765 USD
View
B
Retailer 9
-
$34,075 SGD
$26,644 USD
View
Most Expensive
B
Brilliant Earth
21633058A · Nov 2
$37,536 SGD
$29,350 USD
View
9 more retailers have this diamond
Prices start from $9,886 SGDSave up to $27,650 SGD

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
$9,886 SGD