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1.81ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG500165523

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500165523

Diamond specifications and retailer prices

From $1,432 SGD
As of November 5, 2026
Save $3,890 SGD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,322 SGD 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 LG500165523 or 500165523. Listed at 10 retailers as of November 5, 2026, with prices from $1,432 to $5,322, a $3,890 spread on the same certified stone. MOH London lists it at $5,322. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500165523
Dimensions7.87 × 7.84 × 4.77 mm
L/W Ratio1.00
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
7.87 mm7.84 mm1.81 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500165523
Side View
Table 60.5%Crown 33.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $5,322 SGD|Low: $1,374 SGD|High: $5,402 SGD|Avg: $2,692 SGD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5$1,432 SGD
Retailer 6$1,662 SGD
Retailer 8$1,662 SGD
Retailer 2$1,818 SGD
Retailer 4$1,884 SGD
Retailer 10$2,390 SGD
Retailer 3$2,463 SGD
Retailer 7$2,641 SGD
Retailer 9$3,370 SGD
Retailer 11$4,754 SGD
MOH London$5,322 SGD

38 data points across 11 retailers

10 retailers$1,432 SGD to $5,322 SGD

A
Cheapest Retailer
-
$1,432 SGD
A
Retailer 2
-
$1,558 SGD
View
Retailer 3
-
$1,662 SGD
View
Price last confirmed 25 days ago
A
Retailer 4
-
$1,662 SGD
View
A
Retailer 5
-
$1,818 SGD
View
B+
Retailer 6
-
$1,884 SGD
View
B
Retailer 7
-
$2,641 SGD
View
B
Retailer 8
-
$3,114 SGD
View
B
Retailer 9
-
$3,370 SGD
View
Most Expensive
B
MOH London
LG500165523 · Nov 5
$5,322 SGD
£3,281 GBP
View
9 more retailers have this diamond
Prices start from $1,432 SGDSave up to $3,890 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.

A
1.81ct Round
$1,432 SGD