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Round|Lab Grown|IGI

1.67ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG515228758

Shape and cutting style on the report: Round brilliant

Certificate IGI LG515228758

Diamond specifications and retailer prices

From $455 AUD
$320 USD
As of October 29, 2026
Save $1,994 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,042 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.67ct lab-grown round diamond

This 1.67ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG515228758 or 515228758. Listed at 18 retailers as of October 29, 2026, with a 438% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.67
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515228758
Dimensions7.65 × 7.60 × 4.71 mm
L/W Ratio1.01
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
7.65 mm7.60 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515228758
Side View
Table 58.0%Crown 35.4°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 61.8%

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 29
Current: $4,042 AUD|Low: $455 AUD|High: $4,042 AUD|Avg: $1,384 AUD
Do Amore Diamonds
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
Retailer 17
Retailer 18
October 30, 2026
Retailer 15$455 AUD
Retailer 14$528 AUD
Retailer 13$565 AUD
Retailer 18$565 AUD
Retailer 16$591 AUD
Retailer 9$737 AUD
Retailer 4$783 AUD
Retailer 5$1,018 AUD
Retailer 2$1,079 AUD
Retailer 11$1,119 AUD
Retailer 7$1,171 AUD
Retailer 10$1,272 AUD
Retailer 3$1,657 AUD
Retailer 17$2,004 AUD
Retailer 6$2,054 AUD
Retailer 8$2,229 AUD
Retailer 12$2,449 AUD
Do Amore Diamonds$4,042 AUD

14 data points across 18 retailers

18 retailers$455 AUD to $2,449 AUD

A
Cheapest Retailer
-
$455 AUD
$320 USD
A
Retailer 2
-
$528 AUD
$371 USD
View
A
Retailer 3
-
$565 AUD
$397 USD
View
A
Retailer 4
-
$565 AUD
$397 USD
View
A
Retailer 5
-
$591 AUD
$415 USD
View
A
Retailer 6
-
$737 AUD
$518 USD
View
A
Retailer 7
-
$783 AUD
$550 USD
View
B+
Retailer 8
-
$1,018 AUD
$715 USD
View
B+
Retailer 9
-
$1,079 AUD
£597 GBP
View
B+
Retailer 10
-
$1,119 AUD
£619 GBP
View
B+
Retailer 11
-
$1,171 AUD
$823 USD
View
B+
Retailer 12
-
$1,272 AUD
$894 USD
View
B
Retailer 13
-
$1,657 AUD
$1,164 USD
View
B
Retailer 14
-
$2,004 AUD
$1,408 USD
View
B
Retailer 15
-
$2,054 AUD
$1,443 USD
View
B
Retailer 16
-
$2,229 AUD
$1,566 USD
View
B
Retailer 17
-
$2,449 AUD
£1,355 GBP
View
Most Expensive
Do Amore Diamonds
27-508475D7A · Oct 29
$4,042 AUD
$2,840 USD
View
Price under review
17 more retailers have this diamond
Prices start from $455 AUDSave up to $1,994 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
1.67ct Round
$455 AUD