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Round|Lab Grown|IGI

1.67ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG669420558

Shape and cutting style on the report: Round brilliant

Certificate IGI LG669420558

Diamond specifications and retailer prices

From $280 AUD
$197 USD
As of October 29, 2026
Save $1,354 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,634 AUD at MOH London · As of October 29, 2026
View at MOH London

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 LG669420558 or 669420558. Listed at 14 retailers as of October 29, 2026, with prices from $280 to $1,634, a $1,354 spread on the same certified stone. MOH London lists it at $1,634. 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 angle33.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669420558
Dimensions7.62 × 7.54 × 4.73 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.62 mm7.54 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669420558
Side View
Table 56.0%Crown 33.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

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: Oct 29
Current: $1,634 AUD|Low: $262 AUD|High: $1,634 AUD|Avg: $765 AUD
MOH London
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
October 30, 2026
Retailer 7$262 AUD
Retailer 15$280 AUD
Retailer 13$325 AUD
Retailer 12$347 AUD
Retailer 9$583 AUD
Retailer 2$602 AUD
Retailer 14$606 AUD
Retailer 8$634 AUD
Retailer 11$709 AUD
Retailer 3$723 AUD
Retailer 5$888 AUD
Retailer 4$1,046 AUD
Retailer 10$1,117 AUD
Retailer 6$1,366 AUD
MOH London$1,634 AUD

17 data points across 15 retailers

14 retailers$280 AUD to $1,634 AUD

A
Cheapest Retailer
-
$280 AUD
$197 USD
A
Retailer 2
-
$325 AUD
$228 USD
View
A
Retailer 3
-
$347 AUD
$244 USD
View
A
Retailer 4
-
$583 AUD
€390 EUR
View
A
Retailer 5
-
$602 AUD
£333 GBP
View
B+
Retailer 6
-
$606 AUD
$426 USD
View
A
Retailer 7
-
$634 AUD
£351 GBP
View
A
Retailer 8
-
$709 AUD
$498 USD
View
A
Retailer 9
-
$723 AUD
$508 USD
View
B+
Retailer 10
-
$888 AUD
$624 USD
View
Retailer 11
-
$1,046 AUD
$735 USD
View
Price last confirmed 12 days ago
B+
Retailer 12
-
$1,117 AUD
$785 USD
View
B
Retailer 13
-
$1,366 AUD
$960 USD
View
Most Expensive
B
MOH London
LG669420558 · Oct 29
$1,634 AUD
£904 GBP
View
13 more retailers have this diamond
Prices start from $280 AUDSave up to $1,354 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
$280 AUD