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Round|Lab Grown|IGI

1.81ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG494161661

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494161661

Diamond specifications and retailer prices

From $1,121 USD
As of November 5, 2026
Save $3,046 USD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,167 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.81ct lab-grown round diamond

This 1.81ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494161661 or 494161661. Listed at 10 retailers as of November 5, 2026, with prices from $1,121 to $4,167, a $3,046 spread on the same certified stone. MOH London lists it at $4,167. 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
K
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494161661
Dimensions7.78 × 7.84 × 4.82 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.78 mm7.84 mm1.81 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494161661
Side View
Table 56.5%Crown 35.7°GirdlePavilion 40.3°Culet: NoneDepth 61.7%

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: Nov 5
Current: $4,167 USD|Low: $1,076 USD|High: $4,234 USD|Avg: $2,021 USD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$1,121 USD
Retailer 5$1,301 USD
Retailer 7$1,301 USD
Retailer 2$1,423 USD
Retailer 3$1,475 USD
Retailer 9$1,871 USD
Retailer 6$2,068 USD
Retailer 8$2,638 USD
MOH London$4,167 USD

38 data points across 9 retailers

10 retailers$1,121 USD to $4,167 USD

A
Cheapest Retailer
-
$1,121 USD
A
Retailer 2
-
$1,220 USD
View
Retailer 3
-
$1,301 USD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$1,301 USD
View
A
Retailer 5
-
$1,423 USD
View
B+
Retailer 6
-
$1,475 USD
View
B
Retailer 7
-
$2,068 USD
View
B
Retailer 8
-
$2,438 USD
View
B
Retailer 9
-
$2,638 USD
View
Most Expensive
B
MOH London
LG494161661 · Nov 5
$4,167 USD
£3,281 GBP
View
9 more retailers have this diamond
Prices start from $1,121 USDSave up to $3,046 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
1.81ct Round
$1,121 USD