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Oval|Lab Grown|IGI

12.05ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG560216123

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG560216123

Diamond specifications and retailer prices

From $3,460 NZD
£1,533 GBP
As of October 27, 2026
Save $27,430 NZD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $30,889 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.05ct lab-grown oval diamond

This 12.05ct 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 LG560216123 or 560216123. Listed at 11 retailers as of October 27, 2026, with prices from $3,460 to $30,889, a $27,430 spread on the same certified stone. Brilliant Earth lists it at $30,889. 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

12.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG560216123
Dimensions18.33 × 12.92 × 8.19 mm
L/W Ratio1.42
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
18.33 mm12.92 mm12.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG560216123
Side View
Table 59.5%Crown 35.8°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.4%

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: $33,538 NZD|Low: $3,460 NZD|High: $38,178 NZD|Avg: $14,871 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$3,460 NZD
Retailer 10$4,875 NZD
Retailer 15$6,141 NZD
Retailer 7$6,711 NZD
Retailer 9$7,208 NZD
Retailer 11$7,397 NZD
Retailer 6$7,417 NZD
Retailer 5$8,849 NZD
Retailer 2$10,264 NZD
Retailer 4$10,724 NZD
Retailer 16$13,806 NZD
Retailer 12$18,770 NZD
Retailer 3$20,730 NZD
Retailer 13$23,069 NZD
Brilliant Earth$33,538 NZD
Retailer 8$38,178 NZD

11 data points across 16 retailers

11 retailers$3,460 NZD to $30,889 NZD

A
Cheapest Retailer
-
$3,460 NZD
£1,533 GBP
A
Retailer 2
-
$4,875 NZD
$2,743 USD
View
B+
Retailer 3
-
$6,141 NZD
$3,455 USD
View
B
Retailer 4
-
$7,208 NZD
£3,193 GBP
View
B
Retailer 5
-
$7,397 NZD
$4,162 USD
View
B
Retailer 6
-
$10,724 NZD
$6,034 USD
View
B
Retailer 7
-
$13,806 NZD
$7,768 USD
View
B
Retailer 8
-
$18,770 NZD
$10,561 USD
View
B
Retailer 9
-
$20,730 NZD
$11,664 USD
View
B
Retailer 10
-
$23,069 NZD
$12,980 USD
View
Most Expensive
B
Brilliant Earth
22301436A · Oct 31
$30,889 NZD
$17,380 USD
View
10 more retailers have this diamond
Prices start from $3,460 NZDSave up to $27,430 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
12.05ct Oval
$3,460 NZD