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Round|Lab Grown|IGI

1.80ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG480148959

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480148959

Diamond specifications and retailer prices

From $1,300 USD
As of October 29, 2026
Save $3,304 USD (72%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,604 USD at MOH London · As of October 27, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG480148959 or 480148959. Listed at 12 retailers as of October 27, 2026, with prices from $1,300 to $4,604, a $3,304 spread on the same certified stone. MOH London lists it at $4,604. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480148959
Dimensions7.69 × 7.64 × 4.88 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
7.69 mm7.64 mm1.80 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG480148959
Side View
Table 55.5%Crown 36.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
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: Oct 29
Current: $4,604 USD|Low: $1,109 USD|High: $4,658 USD|Avg: $2,331 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 8$1,300 USD
Retailer 7$1,388 USD
Retailer 11$1,510 USD
Retailer 13$1,554 USD
Retailer 9$1,610 USD
Retailer 14$1,610 USD
Retailer 3$1,780 USD
Retailer 2$2,119 USD
Retailer 5$2,211 USD
Retailer 10$2,542 USD
Retailer 4$2,921 USD
Retailer 12$3,017 USD
MOH London$4,604 USD
Retailer 6$4,606 USD

37 data points across 14 retailers

12 retailers$1,300 USD to $4,604 USD

A
Cheapest Retailer
-
$1,300 USD
A
Retailer 2
-
$1,388 USD
View
B+
Retailer 3
-
$1,510 USD
View
B+
Retailer 4
-
$1,554 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,610 USD
View
B+
Retailer 6
-
$1,610 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$1,780 USD
View
B+
Retailer 8
-
$2,119 USD
£1,669 GBP
View
B
Retailer 9
-
$2,542 USD
View
B
Retailer 10
-
$2,921 USD
View
B
Retailer 11
-
$3,017 USD
View
Most Expensive
B
MOH London
LG480148959 · Oct 27
$4,604 USD
£3,625 GBP
View
11 more retailers have this diamond
Prices start from $1,300 USDSave up to $3,304 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
$1,300 USD