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Round|Lab Grown|IGI

1.70ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG642471180

Shape and cutting style on the report: Round brilliant

Certificate IGI LG642471180

Diamond specifications and retailer prices

From $337 AUD
$236 USD
As of November 1, 2026
Save $1,336 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,673 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG642471180 or 642471180. Listed at 16 retailers as of November 1, 2026, with prices from $337 to $1,673, a $1,336 spread on the same certified stone. MOH London lists it at $1,673. 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

1.70
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642471180
Dimensions7.76 × 7.71 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.76 mm7.71 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642471180
Side View
Table 60.0%Crown 34°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.4%

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: $1,673 AUD|Low: $337 AUD|High: $1,693 AUD|Avg: $933 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10$337 AUD
Retailer 11$418 AUD
Retailer 12$658 AUD
Retailer 3$706 AUD
Retailer 5$767 AUD
Retailer 6$780 AUD
Retailer 4$788 AUD
Retailer 8$833 AUD
Retailer 2$1,110 AUD
Retailer 9$1,206 AUD
Retailer 7$1,570 AUD
MOH London$1,673 AUD

42 data points across 12 retailers

16 retailers$337 AUD to $1,673 AUD

A
Cheapest Retailer
-
$337 AUD
$236 USD
A
Retailer 2
-
$391 AUD
$274 USD
View
Retailer 3
-
$418 AUD
$293 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$418 AUD
$293 USD
View
B+
Retailer 5
-
$706 AUD
$495 USD
View
A
Retailer 6
-
$758 AUD
$531 USD
View
A
Retailer 7
-
$767 AUD
£423 GBP
View
A
Retailer 8
-
$780 AUD
£431 GBP
View
A
Retailer 9
-
$788 AUD
$552 USD
View
B+
Retailer 10
-
$833 AUD
View
B+
Retailer 11
-
$1,110 AUD
$778 USD
View
Retailer 12
-
$1,159 AUD
$812 USD
View
Price last confirmed 50 days ago
Retailer 13
-
$1,206 AUD
$845 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$1,341 AUD
$940 USD
View
B
Retailer 15
-
$1,570 AUD
$1,100 USD
View
Most Expensive
B
MOH London
LG642471180 · Nov 2
$1,673 AUD
£923 GBP
View
15 more retailers have this diamond
Prices start from $337 AUDSave up to $1,336 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
1.70ct Round
$337 AUD