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Round|Lab Grown|IGI

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 $394 AUD
$276 USD
As of October 31, 2026
Save $2,645 AUD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,039 AUD 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 $394 to $3,039, a $2,645 spread on the same certified stone. Do Amore Diamonds lists it at $3,039. 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: $3,039 AUD|Low: $388 AUD|High: $3,039 AUD|Avg: $1,179 AUD
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$394 AUD
Retailer 8$672 AUD
Retailer 9$772 AUD
Retailer 2$797 AUD
Retailer 3$816 AUD
Retailer 6$1,269 AUD
Retailer 5$1,270 AUD
Retailer 10$1,396 AUD
Retailer 4$1,740 AUD
Do Amore Diamonds$3,039 AUD

43 data points across 10 retailers

11 retailers$394 AUD to $3,039 AUD

A
Cheapest Retailer
-
$394 AUD
$276 USD
A
Retailer 2
-
$644 AUD
$451 USD
View
B+
Retailer 3
-
$672 AUD
$471 USD
View
A
Retailer 4
-
$772 AUD
$541 USD
View
A
Retailer 5
-
$797 AUD
£440 GBP
View
A
Retailer 6
-
$816 AUD
£450 GBP
View
B
Retailer 7
-
$1,269 AUD
$889 USD
View
B+
Retailer 8
-
$1,270 AUD
$890 USD
View
B
Retailer 9
-
$1,396 AUD
$978 USD
View
B
Retailer 10
-
$1,740 AUD
£960 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B5EA51ED6 · Nov 2
$3,039 AUD
$2,130 USD
View
10 more retailers have this diamond
Prices start from $394 AUDSave up to $2,645 AUD

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
$394 AUD