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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 $424 USD
As of October 29, 2026
Save $4,006 USD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,430 USD 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 29, 2026, with prices from $424 to $4,430, a $4,006 spread on the same certified stone. Brilliant Earth lists it at $4,430. 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
Color
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

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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 29
Current: $4,430 USD|Low: $424 USD|High: $4,430 USD|Avg: $1,111 USD
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 5$424 USD
Retailer 4$475 USD
Retailer 11$491 USD
Retailer 12$526 USD
Retailer 8$549 USD
Retailer 16$670 USD
Retailer 14$705 USD
Retailer 13$827 USD
Retailer 9$867 USD
Retailer 6$919 USD
Retailer 3$1,043 USD
Retailer 10$1,262 USD
Retailer 15$1,690 USD
Retailer 7$1,890 USD
Retailer 2$1,932 USD
Brilliant Earth$4,430 USD

45 data points across 16 retailers

16 retailers$424 USD to $4,430 USD

A
Cheapest Retailer
-
$424 USD
A
Retailer 2
-
$475 USD
View
A
Retailer 3
-
$491 USD
View
Final sale: no returns
A
Retailer 4
-
$526 USD
View
Retailer 5
-
$549 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$670 USD
View
B+
Retailer 7
-
$705 USD
View
A
Retailer 8
-
$827 USD
View
A
Retailer 9
-
$867 USD
£682 GBP
View
A
Retailer 10
-
$919 USD
€875 EUR
View
A
Retailer 11
-
$1,043 USD
View
B+
Retailer 12
-
$1,262 USD
View
B+
Retailer 13
-
$1,690 USD
View
B+
Retailer 14
-
$1,890 USD
View
B+
Retailer 15
-
$1,932 USD
£1,521 GBP
View
Most Expensive
B
Brilliant Earth
17470500A · Oct 31
$4,430 USD
View
15 more retailers have this diamond
Prices start from $424 USDSave up to $4,006 USD

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
$424 USD