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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG620431074

Shape and cutting style on the report: Round brilliant

Certificate IGI LG620431074

Diamond specifications and retailer prices

From $321 AUD
As of November 5, 2026
Save $1,395 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,716 AUD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG620431074 or 620431074. Listed at 18 retailers as of November 4, 2026, with prices from $321 to $1,716, a $1,395 spread on the same certified stone. Reve Diamonds lists it at $1,716. 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

1.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620431074
Dimensions6.56 × 6.58 × 4.00 mm
L/W Ratio1.00
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
6.56 mm6.58 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620431074
Side View
Table 57.0%Crown 33.5°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.8%

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: Nov 5
Current: $650 AUD|Low: $277 AUD|High: $1,716 AUD|Avg: $746 AUD|+5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
November 6, 2026
Retailer 12$289 AUD
Retailer 3$321 AUD
Retailer 4$359 AUD
Retailer 13$359 AUD
Retailer 11$443 AUD
Retailer 9$609 AUD
Retailer 2$621 AUD
Retailer 1$650 AUD
Retailer 6$693 AUD
Retailer 10$769 AUD
Retailer 5$806 AUD
Retailer 8$931 AUD
Retailer 7$1,670 AUD
Reve Diamonds$1,716 AUD

41 data points across 14 retailers

18 retailers$321 AUD to $1,716 AUD

Retailer 1
-
$289 AUD
Price last confirmed 17 days ago
A
Retailer 2
-
$321 AUD
View
Final sale: no returns
Retailer 3
-
$336 AUD
View
Price last confirmed 17 days ago
Retailer 4
-
$359 AUD
View
Price last confirmed 21 days ago
Retailer 5
-
$359 AUD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$443 AUD
View
Retailer 7
-
$586 AUD
View
Price last confirmed 58 days ago
B+
Retailer 8
-
$609 AUD
View
B+
Retailer 9
-
$621 AUD
View
B+
Retailer 10
-
$650 AUD
View
B+
Retailer 11
-
$693 AUD
View
B+
Retailer 12
-
$769 AUD
View
B
Retailer 13
-
$806 AUD
View
B
Retailer 14
-
$931 AUD
View
Retailer 15
-
$1,153 AUD
View
Price last confirmed 16 days ago
B
Retailer 16
-
$1,229 AUD
View
B
Retailer 17
-
$1,670 AUD
View
Most Expensive
B
Reve Diamonds
C3DE76E96 · Nov 4
$1,716 AUD
$1,201 USD
View
17 more retailers have this diamond
Prices start from $321 AUDSave up to $1,395 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
1.05ct Round
$321 AUD