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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 $2,771 AUD
£1,533 GBP
As of October 27, 2026
Save $21,971 AUD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $24,742 AUD 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 $2,771 to $24,742, a $21,971 spread on the same certified stone. Brilliant Earth lists it at $24,742. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $26,863 AUD|Low: $2,771 AUD|High: $30,580 AUD|Avg: $11,912 AUD
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$2,771 AUD
Retailer 10$3,905 AUD
Retailer 15$4,919 AUD
Retailer 7$5,376 AUD
Retailer 9$5,774 AUD
Retailer 11$5,925 AUD
Retailer 6$5,941 AUD
Retailer 5$7,088 AUD
Retailer 2$8,221 AUD
Retailer 4$8,590 AUD
Retailer 16$11,059 AUD
Retailer 12$15,035 AUD
Retailer 3$16,605 AUD
Retailer 13$18,478 AUD
Brilliant Earth$26,863 AUD
Retailer 8$30,580 AUD

11 data points across 16 retailers

11 retailers$2,771 AUD to $24,742 AUD

A
Cheapest Retailer
-
$2,771 AUD
£1,533 GBP
A
Retailer 2
-
$3,905 AUD
$2,743 USD
View
B+
Retailer 3
-
$4,919 AUD
$3,455 USD
View
B
Retailer 4
-
$5,774 AUD
£3,193 GBP
View
B
Retailer 5
-
$5,925 AUD
$4,162 USD
View
B
Retailer 6
-
$8,590 AUD
$6,034 USD
View
B
Retailer 7
-
$11,059 AUD
$7,768 USD
View
B
Retailer 8
-
$15,035 AUD
$10,561 USD
View
B
Retailer 9
-
$16,605 AUD
$11,664 USD
View
B
Retailer 10
-
$18,478 AUD
$12,980 USD
View
Most Expensive
B
Brilliant Earth
22301436A · Oct 31
$24,742 AUD
$17,380 USD
View
10 more retailers have this diamond
Prices start from $2,771 AUDSave up to $21,971 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
12.05ct Oval
$2,771 AUD