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1.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG638427518

Shape and cutting style on the report: Round brilliant

Certificate IGI LG638427518

Diamond specifications and retailer prices

From $491 NZD
$276 USD
As of October 31, 2026
Save $3,295 NZD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,786 NZD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 LG638427518 or 638427518. Listed at 11 retailers as of October 31, 2026, with prices from $491 to $3,786, a $3,295 spread on the same certified stone. Do Amore Diamonds lists it at $3,786. 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 angle33.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638427518
Dimensions7.86 × 7.80 × 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 Type IIa
Top View
7.86 mm7.80 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638427518
Side View
Table 59.0%Crown 33.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.0%

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 31
Current: $3,786 NZD|Low: $483 NZD|High: $3,786 NZD|Avg: $1,468 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$491 NZD
Retailer 8$837 NZD
Retailer 9$962 NZD
Retailer 2$993 NZD
Retailer 3$1,016 NZD
Retailer 6$1,580 NZD
Retailer 5$1,582 NZD
Retailer 10$1,738 NZD
Retailer 4$2,167 NZD
Do Amore Diamonds$3,786 NZD

43 data points across 10 retailers

11 retailers$491 NZD to $3,786 NZD

A
Cheapest Retailer
-
$491 NZD
$276 USD
A
Retailer 2
-
$802 NZD
$451 USD
View
B+
Retailer 3
-
$837 NZD
$471 USD
View
A
Retailer 4
-
$962 NZD
$541 USD
View
A
Retailer 5
-
$993 NZD
£440 GBP
View
A
Retailer 6
-
$1,016 NZD
£450 GBP
View
B
Retailer 7
-
$1,580 NZD
$889 USD
View
B+
Retailer 8
-
$1,582 NZD
$890 USD
View
B
Retailer 9
-
$1,738 NZD
$978 USD
View
B
Retailer 10
-
$2,167 NZD
£960 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B5EA51ED6 · Nov 2
$3,786 NZD
$2,130 USD
View
10 more retailers have this diamond
Prices start from $491 NZDSave up to $3,295 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
$491 NZD