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Oval|Lab Grown|IGI

18.19ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG584388837

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG584388837

Diamond specifications and retailer prices

From $6,011 AUD
£3,325 GBP
As of October 27, 2026
Save $34,078 AUD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $40,089 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 18.19ct lab-grown oval diamond

This 18.19ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG584388837 or 584388837. Listed at 12 retailers as of October 27, 2026, with prices from $6,011 to $40,089, a $34,078 spread on the same certified stone. Do Amore Diamonds lists it at $40,089. 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

18.19
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG584388837
Dimensions21.33 × 14.95 × 9.21 mm
L/W Ratio1.43
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
21.33 mm14.95 mm18.19 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG584388837
Side View
Table 61.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $40,089 AUD|Low: $6,011 AUD|High: $118,001 AUD|Avg: $30,934 AUD
Do Amore Diamonds
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 1, 2026
Retailer 12$6,011 AUD
Retailer 10$8,341 AUD
Retailer 2$10,485 AUD
Retailer 13$10,883 AUD
Retailer 11$10,930 AUD
Retailer 8$11,822 AUD
Retailer 6$13,630 AUD
Retailer 3$18,611 AUD
Retailer 4$20,429 AUD
Retailer 14$25,108 AUD
Retailer 9$32,514 AUD
Retailer 15$36,876 AUD
Do Amore Diamonds$40,089 AUD
Retailer 5$41,156 AUD
Retailer 7$118,001 AUD

9 data points across 15 retailers

12 retailers$6,011 AUD to $40,089 AUD

A
Cheapest Retailer
-
$6,011 AUD
£3,325 GBP
B+
Retailer 2
-
$8,341 AUD
$5,859 USD
View
B+
Retailer 3
-
$10,485 AUD
$7,365 USD
View
B+
Retailer 4
-
$10,883 AUD
$7,645 USD
View
B
Retailer 5
-
$10,930 AUD
$7,678 USD
View
B
Retailer 6
-
$11,822 AUD
£6,539 GBP
View
B
Retailer 7
-
$18,611 AUD
$13,074 USD
View
B
Retailer 8
-
$25,108 AUD
$17,637 USD
View
B
Retailer 9
-
$32,514 AUD
$22,839 USD
View
B
Retailer 10
-
$36,876 AUD
$25,903 USD
View
B
Retailer 11
-
$37,711 AUD
$26,490 USD
View
Most Expensive
B
Do Amore Diamonds
27-6BE5192AA · Oct 29
$40,089 AUD
$28,160 USD
View
11 more retailers have this diamond
Prices start from $6,011 AUDSave up to $34,078 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
18.19ct Oval
$6,011 AUD