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Round|Lab Grown|IGI

1.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG651482936

Shape and cutting style on the report: Round brilliant

Certificate IGI LG651482936

Diamond specifications and retailer prices

From $387 NZD
$218 USD
As of November 1, 2026
Save $2,012 NZD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,399 NZD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG651482936 or 651482936. Listed at 15 retailers as of November 1, 2026, with prices from $387 to $2,399, a $2,012 spread on the same certified stone. Brilliant Earth lists it at $2,399. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG651482936
Dimensions7.80 × 7.74 × 4.80 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.80 mm7.74 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651482936
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,399 NZD|Low: $373 NZD|High: $2,399 NZD|Avg: $907 NZD
Brilliant Earth
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
Retailer 15
November 2, 2026
Retailer 8$387 NZD
Retailer 7$434 NZD
Retailer 14$450 NZD
Retailer 9$482 NZD
Retailer 5$487 NZD
Retailer 3$804 NZD
Retailer 15$825 NZD
Retailer 2$884 NZD
Retailer 13$953 NZD
Retailer 12$1,026 NZD
Retailer 10$1,546 NZD
Retailer 11$1,552 NZD
Retailer 6$1,617 NZD
Retailer 4$1,955 NZD
Brilliant Earth$2,399 NZD

40 data points across 15 retailers

15 retailers$387 NZD to $2,399 NZD

A
Cheapest Retailer
-
$387 NZD
$218 USD
A
Retailer 2
-
$434 NZD
$244 USD
View
Final sale: no returns
A
Retailer 3
-
$450 NZD
$253 USD
View
A
Retailer 4
-
$482 NZD
$271 USD
View
Retailer 5
-
$487 NZD
$274 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$804 NZD
€431 EUR
View
B+
Retailer 7
-
$825 NZD
$464 USD
View
A
Retailer 8
-
$884 NZD
£391 GBP
View
A
Retailer 9
-
$953 NZD
$536 USD
View
A
Retailer 10
-
$1,026 NZD
$577 USD
View
B+
Retailer 11
-
$1,546 NZD
$870 USD
View
B+
Retailer 12
-
$1,552 NZD
$873 USD
View
B
Retailer 13
-
$1,617 NZD
$910 USD
View
Retailer 14
-
$1,955 NZD
£866 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
11867105A · Nov 1
$2,399 NZD
$1,350 USD
View
14 more retailers have this diamond
Prices start from $387 NZDSave up to $2,012 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
$387 NZD