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Radiant|Lab Grown|IGI

1.81ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG530293318

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

Certificate IGI LG530293318

Diamond specifications and retailer prices

From $1,650 USD
As of November 2, 2026
Save $2,150 USD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,800 USD at Friendly Diamonds · As of November 2, 2026
View at Friendly Diamonds

About this 1.81ct lab-grown radiant diamond

This 1.81ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG530293318 or 530293318. Listed at 12 retailers as of November 2, 2026, with prices from $1,650 to $3,800, a $2,150 spread on the same certified stone. Friendly Diamonds lists it at $3,800. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.81
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.1°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG530293318
Dimensions7.95 × 6.00 × 4.17 mm
L/W Ratio1.32
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
7.95 mm6.00 mm1.81 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG530293318
Side View
Table 66.0%Crown 50.1°Girdle: MediumPavilion 32.5°Culet: NoneDepth 69.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $3,800 USD|Low: $1,650 USD|High: $6,688 USD|Avg: $3,102 USD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5$1,650 USD
Retailer 4$1,995 USD
Retailer 8$2,233 USD
Retailer 6$2,314 USD
Retailer 9$2,480 USD
Retailer 2$3,157 USD
Retailer 7$3,622 USD
Friendly Diamonds$3,800 USD
Retailer 3$6,609 USD

43 data points across 9 retailers

12 retailers$1,650 USD to $3,800 USD

B
Cheapest Retailer
-
$1,650 USD
B
Retailer 2
-
$1,995 USD
View
B
Retailer 3
-
$2,170 USD
View
B
Retailer 4
-
$2,233 USD
View
Final sale: no returns
B
Retailer 5
-
$2,314 USD
View
Retailer 6
-
$2,314 USD
View
Price last confirmed 22 days ago
B
Retailer 7
-
$2,480 USD
View
B
Retailer 8
-
$3,157 USD
£2,486 GBP
View
B
Retailer 9
-
$3,181 USD
View
B
Retailer 10
-
$3,622 USD
View
Most Expensive
B
Friendly Diamonds
1585640 · Nov 2
$3,800 USD
View
10 more retailers have this diamond
Prices start from $1,650 USDSave up to $2,150 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.

B
1.81ct Radiant
$1,650 USD