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Round|Lab Grown|IGI

1.18ct G SI2 Round Lab Grown Diamond

ID • G/SI2 • IGI LG371992809

Shape and cutting style on the report: Round brilliant

Certificate IGI LG371992809

Diamond specifications and retailer prices

From $380 NZD
$214 USD
As of October 29, 2026
Save $1,705 NZD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,084 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.18ct lab-grown round diamond

This 1.18ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG371992809 or 371992809. Listed at 15 retailers as of October 29, 2026, with prices from $380 to $2,084, a $1,705 spread on the same certified stone. MOH London lists it at $2,084. 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

1.18
Carat
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG371992809
Dimensions6.76 × 6.81 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
6.76 mm6.81 mm1.18 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG371992809
Side View
Table 58.0%Crown 35.5°Girdle: MediumPavilion 41°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: Oct 29
Current: $2,084 NZD|Low: $380 NZD|High: $2,096 NZD|Avg: $1,015 NZD|-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
November 1, 2026
Retailer 12$380 NZD
Retailer 10$440 NZD
Retailer 9$472 NZD
Retailer 13$472 NZD
Retailer 8$554 NZD
Retailer 2$782 NZD
Retailer 5$930 NZD
Retailer 7$981 NZD
Retailer 11$1,033 NZD
Retailer 6$1,211 NZD
Retailer 3$1,521 NZD
Retailer 4$1,625 NZD
Retailer 14$1,671 NZD
MOH London$2,084 NZD

16 data points across 14 retailers

15 retailers$380 NZD to $2,084 NZD

A
Cheapest Retailer
-
$380 NZD
$214 USD
A
Retailer 2
-
$440 NZD
$248 USD
View
A
Retailer 3
-
$472 NZD
$266 USD
View
A
Retailer 4
-
$472 NZD
$266 USD
View
B+
Retailer 5
-
$554 NZD
$312 USD
View
B+
Retailer 6
-
$782 NZD
£347 GBP
View
B
Retailer 7
-
$930 NZD
$524 USD
View
B+
Retailer 8
-
$981 NZD
£435 GBP
View
B+
Retailer 9
-
$1,033 NZD
$582 USD
View
B
Retailer 10
-
$1,211 NZD
$683 USD
View
B
Retailer 11
-
$1,473 NZD
$830 USD
View
B
Retailer 12
-
$1,521 NZD
$857 USD
View
B
Retailer 13
-
$1,625 NZD
$916 USD
View
B
Retailer 14
-
$1,671 NZD
$942 USD
View
Most Expensive
B
MOH London
LG371992809 · Nov 1
$2,084 NZD
£925 GBP
View
14 more retailers have this diamond
Prices start from $380 NZDSave up to $1,705 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
1.18ct Round
$380 NZD