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Oval|Lab Grown|IGI

3.05ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG678584132

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG678584132

Diamond specifications and retailer prices

From $1,097 NZD
As of November 1, 2026
Save $2,926 NZD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,023 NZD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584132 or 678584132. Listed at 15 retailers as of October 31, 2026, with prices from $1,097 to $4,023, a $2,926 spread on the same certified stone. Brilliant Earth lists it at $4,023. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584132
Dimensions11.67 × 8.25 × 5.11 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.67 mm8.25 mm3.05 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678584132
Side View
Table 59.0%Crown 33.7°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.9%

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: $4,023 NZD|Low: $657 NZD|High: $4,023 NZD|Avg: $1,676 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 4$657 NZD
Retailer 3$750 NZD
Retailer 16$761 NZD
Retailer 7$882 NZD
Retailer 8$882 NZD
Retailer 14$1,082 NZD
Retailer 11$1,097 NZD
Retailer 12$1,384 NZD
Retailer 9$1,468 NZD
Retailer 5$1,530 NZD
Retailer 15$1,937 NZD
Retailer 10$2,044 NZD
Retailer 13$2,617 NZD
Retailer 2$3,182 NZD
Retailer 6$3,400 NZD
Brilliant Earth$4,023 NZD

41 data points across 16 retailers

15 retailers$1,097 NZD to $4,023 NZD

Retailer 1
-
$657 NZD
Price last confirmed 10 days ago
Retailer 2
-
$761 NZD
View
Price last confirmed 10 days ago
Retailer 3
-
$882 NZD
View
Price last confirmed 12 days ago
Retailer 4
-
$882 NZD
View
Price last confirmed 12 days ago
Retailer 5
-
$1,082 NZD
View
Price last confirmed 4 days ago
B+
Retailer 6
-
$1,097 NZD
View
A
Retailer 7
-
$1,384 NZD
View
A
Retailer 8
-
$1,468 NZD
View
A
Retailer 9
-
$1,530 NZD
View
B+
Retailer 10
-
$1,937 NZD
View
B+
Retailer 11
-
$2,044 NZD
View
Retailer 12
-
$2,617 NZD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$3,182 NZD
View
Retailer 14
-
$3,400 NZD
View
Price last confirmed 16 days ago
Most Expensive
B
Brilliant Earth
17470285A · Oct 31
$4,023 NZD
$2,230 USD
View
14 more retailers have this diamond
Prices start from $1,097 NZDSave up to $2,926 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
3.05ct Oval
$1,097 NZD