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1.80ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG476186438

Shape and cutting style on the report: Round brilliant

Certificate IGI LG476186438

Diamond specifications and retailer prices

From $1,774 NZD
$1,000 USD
As of October 30, 2026
Save $6,899 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,673 NZD at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG476186438 or 476186438. Listed at 10 retailers as of October 29, 2026, with prices from $1,774 to $8,673, a $6,899 spread on the same certified stone. MOH London lists it at $8,673. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.4°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476186438
Dimensions7.85 × 7.92 × 4.73 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
7.85 mm7.92 mm1.80 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG476186438
Side View
Table 62.0%Crown 32.4°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 59.9%

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: Oct 30
Current: $8,673 NZD|Low: $1,774 NZD|High: $8,743 NZD|Avg: $4,149 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,774 NZD
Retailer 11$1,949 NZD
Retailer 4$2,605 NZD
Retailer 7$2,917 NZD
Retailer 5$3,020 NZD
Retailer 8$3,020 NZD
Retailer 10$4,118 NZD
Retailer 6$4,762 NZD
Retailer 9$5,483 NZD
Retailer 3$6,762 NZD
MOH London$8,673 NZD

14 data points across 11 retailers

10 retailers$1,774 NZD to $8,673 NZD

A
Cheapest Retailer
-
$1,774 NZD
$1,000 USD
B+
Retailer 2
-
$2,605 NZD
$1,468 USD
View
B+
Retailer 3
-
$2,834 NZD
$1,597 USD
View
B+
Retailer 4
-
$2,917 NZD
$1,644 USD
View
Final sale: no returns
Retailer 5
-
$3,020 NZD
$1,702 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
$3,020 NZD
$1,702 USD
View
B
Retailer 7
-
$4,762 NZD
$2,684 USD
View
B
Retailer 8
-
$5,483 NZD
$3,090 USD
View
B
Retailer 9
-
$5,662 NZD
$3,191 USD
View
Most Expensive
B
MOH London
LG476186438 · Oct 29
$8,673 NZD
£3,849 GBP
View
9 more retailers have this diamond
Prices start from $1,774 NZDSave up to $6,899 NZD

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
$1,774 NZD