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Oval|Lab Grown|IGI

10.40ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG549220745

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG549220745

Diamond specifications and retailer prices

From $3,325 NZD
£1,473 GBP
As of October 27, 2026
Save $23,334 NZD (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $26,660 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.4ct lab-grown oval diamond

This 10.4ct 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 LG549220745 or 549220745. Listed at 12 retailers as of October 27, 2026, with prices from $3,325 to $26,660, a $23,334 spread on the same certified stone. Brilliant Earth lists it at $26,660. 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

10.40
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG549220745
Dimensions17.79 × 12.25 × 7.72 mm
L/W Ratio1.45
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
17.79 mm12.25 mm10.40 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG549220745
Side View
Table 61.5%Crown 35.1°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.0%

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: $28,934 NZD|Low: $3,325 NZD|High: $28,934 NZD|Avg: $12,351 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
Retailer 16
November 1, 2026
Retailer 14$3,325 NZD
Retailer 10$4,216 NZD
Retailer 15$5,311 NZD
Retailer 7$5,437 NZD
Retailer 6$6,256 NZD
Retailer 9$6,353 NZD
Retailer 11$6,397 NZD
Retailer 5$7,175 NZD
Retailer 4$9,332 NZD
Retailer 2$9,891 NZD
Retailer 16$10,378 NZD
Retailer 12$16,256 NZD
Retailer 3$17,892 NZD
Retailer 13$19,959 NZD
Retailer 8$26,355 NZD
Brilliant Earth$28,934 NZD

11 data points across 16 retailers

12 retailers$3,325 NZD to $26,660 NZD

A
Cheapest Retailer
-
$3,325 NZD
£1,473 GBP
A
Retailer 2
-
$4,216 NZD
$2,372 USD
View
B+
Retailer 3
-
$5,311 NZD
$2,988 USD
View
B
Retailer 4
-
$6,353 NZD
£2,815 GBP
View
B+
Retailer 5
-
$6,397 NZD
$3,599 USD
View
B
Retailer 6
-
$9,332 NZD
$5,251 USD
View
B
Retailer 7
-
$9,891 NZD
$5,565 USD
View
B
Retailer 8
-
$10,378 NZD
$5,839 USD
View
B
Retailer 9
-
$16,256 NZD
$9,147 USD
View
B
Retailer 10
-
$17,892 NZD
$10,067 USD
View
B
Retailer 11
-
$19,959 NZD
$11,230 USD
View
Most Expensive
B
Brilliant Earth
22300764A · Oct 31
$26,660 NZD
$15,000 USD
View
11 more retailers have this diamond
Prices start from $3,325 NZDSave up to $23,334 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
10.40ct Oval
$3,325 NZD