CaratHunter
Plans
Round|Lab Grown|IGI

1.81ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG447099452

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099452

Diamond specifications and retailer prices

From $1,121 USD
As of November 5, 2026
Save $3,057 USD (73%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,178 USD at MOH London · As of November 3, 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 LG447099452 or 447099452. Listed at 9 retailers as of November 3, 2026, with prices from $1,121 to $4,178, a $3,057 spread on the same certified stone. MOH London lists it at $4,178. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099452
Dimensions7.68 × 7.74 × 4.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.68 mm7.74 mm1.81 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099452
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,178 USD|Low: $1,121 USD|High: $4,229 USD|Avg: $2,305 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3$1,121 USD
Retailer 4$1,301 USD
Retailer 2$1,475 USD
Retailer 7$1,871 USD
Retailer 5$2,068 USD
Retailer 6$2,638 USD
MOH London$4,178 USD

14 data points across 7 retailers

9 retailers$1,121 USD to $4,178 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
A
Retailer 4
-
$1,301 USD
View
B+
Retailer 5
-
$1,475 USD
View
B
Retailer 6
-
$2,068 USD
View
B
Retailer 7
-
$2,438 USD
View
B
Retailer 8
-
$2,638 USD
View
Most Expensive
B
MOH London
LG447099452 · Nov 3
$4,178 USD
£3,290 GBP
View
8 more retailers have this diamond
Prices start from $1,121 USDSave up to $3,057 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