CaratHunter
Plans
Round|Lab Grown|IGI

1.80ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG500166065

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500166065

Diamond specifications and retailer prices

From $1,115 USD
As of November 5, 2026
Save $3,030 USD (73%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,145 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct 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 LG500166065 or 500166065. Listed at 9 retailers as of November 5, 2026, with prices from $1,115 to $4,145, a $3,030 spread on the same certified stone. MOH London lists it at $4,145. 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

1.80
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500166065
Dimensions7.73 × 7.69 × 4.78 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
7.73 mm7.69 mm1.80 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500166065
Side View
Table 59.0%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.9%

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: $4,145 USD|Low: $1,115 USD|High: $4,206 USD|Avg: $2,323 USD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$1,115 USD
Retailer 4$1,293 USD
Retailer 2$1,465 USD
Retailer 7$1,862 USD
Retailer 9$1,909 USD
Retailer 5$2,057 USD
Retailer 6$2,624 USD
Retailer 8$3,702 USD
MOH London$4,145 USD

16 data points across 9 retailers

9 retailers$1,115 USD to $4,145 USD

A
Cheapest Retailer
-
$1,115 USD
A
Retailer 2
-
$1,213 USD
View
Retailer 3
-
$1,293 USD
View
Price last confirmed 25 days ago
A
Retailer 4
-
$1,293 USD
View
B+
Retailer 5
-
$1,465 USD
View
B
Retailer 6
-
$2,057 USD
View
B
Retailer 7
-
$2,425 USD
View
B
Retailer 8
-
$2,624 USD
View
Most Expensive
B
MOH London
LG500166065 · Nov 5
$4,145 USD
£3,264 GBP
View
8 more retailers have this diamond
Prices start from $1,115 USDSave up to $3,030 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
1.80ct Round
$1,115 USD