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Oval|Lab Grown|IGI

3.05ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG678584148

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG678584148

Diamond specifications and retailer prices

From $604 AUD
$424 USD
As of November 1, 2026
Save $5,703 AUD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,307 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.05ct lab-grown oval diamond

This 3.05ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584148 or 678584148. Listed at 16 retailers as of October 31, 2026, with prices from $604 to $6,307, a $5,703 spread on the same certified stone. Brilliant Earth lists it at $6,307. 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

3.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584148
Dimensions11.45 × 8.26 × 5.07 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.45 mm8.26 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678584148
Side View
Table 61.0%Crown 35.6°Girdle: MediumPavilion 40.1°Culet: NoneDepth 61.4%

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: Nov 1
Current: $6,307 AUD|Low: $604 AUD|High: $6,307 AUD|Avg: $1,588 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 2, 2026
Retailer 5$604 AUD
Retailer 4$676 AUD
Retailer 11$699 AUD
Retailer 12$749 AUD
Retailer 8$782 AUD
Retailer 16$954 AUD
Retailer 14$1,004 AUD
Retailer 13$1,177 AUD
Retailer 2$1,234 AUD
Retailer 6$1,308 AUD
Retailer 3$1,485 AUD
Retailer 10$1,797 AUD
Retailer 15$2,406 AUD
Retailer 7$2,691 AUD
Retailer 9$2,750 AUD
Brilliant Earth$6,307 AUD

45 data points across 16 retailers

16 retailers$604 AUD to $6,307 AUD

A
Cheapest Retailer
-
$604 AUD
$424 USD
A
Retailer 2
-
$676 AUD
$475 USD
View
A
Retailer 3
-
$699 AUD
$491 USD
View
Final sale: no returns
A
Retailer 4
-
$749 AUD
$526 USD
View
Retailer 5
-
$782 AUD
$549 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$954 AUD
$670 USD
View
B+
Retailer 7
-
$1,004 AUD
$705 USD
View
A
Retailer 8
-
$1,177 AUD
$827 USD
View
A
Retailer 9
-
$1,234 AUD
£682 GBP
View
A
Retailer 10
-
$1,308 AUD
€875 EUR
View
A
Retailer 11
-
$1,485 AUD
$1,043 USD
View
B+
Retailer 12
-
$1,797 AUD
$1,262 USD
View
B+
Retailer 13
-
$2,406 AUD
$1,690 USD
View
B+
Retailer 14
-
$2,691 AUD
$1,890 USD
View
B+
Retailer 15
-
$2,750 AUD
£1,521 GBP
View
Most Expensive
B
Brilliant Earth
17470500A · Oct 31
$6,307 AUD
$4,430 USD
View
15 more retailers have this diamond
Prices start from $604 AUDSave up to $5,703 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
3.05ct Oval
$604 AUD