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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 $7,491 NZD
£3,325 GBP
As of October 27, 2026
Save $42,473 NZD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $49,964 NZD 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 $7,491 to $49,964, a $42,473 spread on the same certified stone. Do Amore Diamonds lists it at $49,964. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $49,964 NZD|Low: $7,491 NZD|High: $147,071 NZD|Avg: $38,555 NZD
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$7,491 NZD
Retailer 10$10,396 NZD
Retailer 2$13,068 NZD
Retailer 13$13,565 NZD
Retailer 11$13,623 NZD
Retailer 8$14,734 NZD
Retailer 6$16,988 NZD
Retailer 3$23,196 NZD
Retailer 4$25,462 NZD
Retailer 14$31,293 NZD
Retailer 9$40,523 NZD
Retailer 15$45,960 NZD
Do Amore Diamonds$49,964 NZD
Retailer 5$51,295 NZD
Retailer 7$147,071 NZD

9 data points across 15 retailers

12 retailers$7,491 NZD to $49,964 NZD

A
Cheapest Retailer
-
$7,491 NZD
£3,325 GBP
B+
Retailer 2
-
$10,396 NZD
$5,859 USD
View
B+
Retailer 3
-
$13,068 NZD
$7,365 USD
View
B+
Retailer 4
-
$13,565 NZD
$7,645 USD
View
B
Retailer 5
-
$13,623 NZD
$7,678 USD
View
B
Retailer 6
-
$14,734 NZD
£6,539 GBP
View
B
Retailer 7
-
$23,196 NZD
$13,074 USD
View
B
Retailer 8
-
$31,293 NZD
$17,637 USD
View
B
Retailer 9
-
$40,523 NZD
$22,839 USD
View
B
Retailer 10
-
$45,960 NZD
$25,903 USD
View
B
Retailer 11
-
$47,001 NZD
$26,490 USD
View
Most Expensive
B
Do Amore Diamonds
27-6BE5192AA · Oct 29
$49,964 NZD
$28,160 USD
View
11 more retailers have this diamond
Prices start from $7,491 NZDSave up to $42,473 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
18.19ct Oval
$7,491 NZD