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Round|Lab Grown|IGI

1.67ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG754510366

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754510366

Diamond specifications and retailer prices

From $284 AUD
$199 USD
As of November 1, 2026
Save $1,899 AUD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,183 AUD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG754510366 or 754510366. Listed at 13 retailers as of November 1, 2026, with prices from $284 to $2,183, a $1,899 spread on the same certified stone. Brilliant Earth lists it at $2,183. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.67
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754510366
Dimensions7.52 × 7.44 × 4.76 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
7.52 mm7.44 mm1.67 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754510366
Side View
Table 58.0%Crown 34.1°Girdle: STK-THKPavilion 41.7°Culet: NoneDepth 63.6%

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: Nov 1
Current: $2,183 AUD|Low: $273 AUD|High: $2,183 AUD|Avg: $688 AUD
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
November 2, 2026
Retailer 6$284 AUD
Retailer 13$330 AUD
Retailer 8$352 AUD
Retailer 5$357 AUD
Retailer 4$599 AUD
Retailer 3$615 AUD
Retailer 2$645 AUD
Retailer 12$728 AUD
Retailer 11$769 AUD
Retailer 9$1,134 AUD
Retailer 10$1,139 AUD
Retailer 7$1,651 AUD
Brilliant Earth$2,183 AUD

42 data points across 13 retailers

13 retailers$284 AUD to $2,183 AUD

A
Cheapest Retailer
-
$284 AUD
$199 USD
A
Retailer 2
-
$330 AUD
$231 USD
View
A
Retailer 3
-
$352 AUD
$247 USD
View
Retailer 4
-
$357 AUD
$250 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$599 AUD
€400 EUR
View
B+
Retailer 6
-
$615 AUD
$431 USD
View
B+
Retailer 7
-
$645 AUD
£356 GBP
View
B+
Retailer 8
-
$728 AUD
$510 USD
View
B+
Retailer 9
-
$769 AUD
$539 USD
View
B
Retailer 10
-
$1,134 AUD
$795 USD
View
B+
Retailer 11
-
$1,139 AUD
$798 USD
View
B
Retailer 12
-
$1,651 AUD
£911 GBP
View
Most Expensive
B
Brilliant Earth
18038583A · Nov 1
$2,183 AUD
$1,530 USD
View
12 more retailers have this diamond
Prices start from $284 AUDSave up to $1,899 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
$284 AUD