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Oval|Lab Grown|IGI

10.18ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG583319019

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG583319019

Diamond specifications and retailer prices

From $3,262 NZD
£1,442 GBP
As of October 27, 2026
Save $27,132 NZD (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $30,393 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 10.18ct lab-grown oval diamond

This 10.18ct lab-grown oval sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG583319019 or 583319019. Listed at 10 retailers as of October 27, 2026, with prices from $3,262 to $30,393, a $27,132 spread on the same certified stone. Brilliant Earth lists it at $30,393. 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

10.18
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG583319019
Dimensions17.53 × 12.20 × 7.68 mm
L/W Ratio1.44
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
17.53 mm12.20 mm10.18 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG583319019
Side View
Table 60.0%Crown 36.1°Girdle: MediumPavilion 41°Culet: NoneDepth 63.0%

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 27
Current: $29,930 NZD|Low: $3,262 NZD|High: $29,930 NZD|Avg: $12,572 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
October 29, 2026
Retailer 10$3,262 NZD
Retailer 11$5,136 NZD
Retailer 12$5,208 NZD
Retailer 6$5,333 NZD
Retailer 5$6,143 NZD
Retailer 9$6,830 NZD
Retailer 4$7,037 NZD
Retailer 15$9,163 NZD
Retailer 8$9,784 NZD
Retailer 13$11,664 NZD
Retailer 3$12,789 NZD
Retailer 14$17,545 NZD
Retailer 2$19,586 NZD
Retailer 7$25,844 NZD
Brilliant Earth$29,930 NZD

8 data points across 15 retailers

10 retailers$3,262 NZD to $30,393 NZD

A
Cheapest Retailer
-
$3,262 NZD
£1,442 GBP
A
Retailer 2
-
$5,136 NZD
£2,271 GBP
View
B+
Retailer 3
-
$5,208 NZD
$2,925 USD
View
B+
Retailer 4
-
$6,830 NZD
$3,836 USD
View
B+
Retailer 5
-
$9,163 NZD
$5,146 USD
View
B
Retailer 6
-
$11,664 NZD
$6,551 USD
View
B
Retailer 7
-
$12,789 NZD
$7,183 USD
View
B
Retailer 8
-
$17,545 NZD
$9,854 USD
View
B
Retailer 9
-
$19,586 NZD
$11,000 USD
View
Most Expensive
B
Brilliant Earth
22301413A · Oct 29
$30,393 NZD
$17,070 USD
View
9 more retailers have this diamond
Prices start from $3,262 NZDSave up to $27,132 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
10.18ct Oval
$3,262 NZD