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Round|Lab Grown|IGI

1.71ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG799635486

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799635486

Diamond specifications and retailer prices

From $320 AUD
$224 USD
As of November 1, 2026
Save $1,270 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,589 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.71ct lab-grown round diamond

This 1.71ct 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 LG799635486 or 799635486. Listed at 16 retailers as of November 1, 2026, with prices from $320 to $1,589, a $1,270 spread on the same certified stone. MOH London lists it at $1,589. 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

1.71
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799635486
Dimensions7.69 × 7.73 × 4.67 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.69 mm7.73 mm1.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799635486
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.6%

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 1
Current: $1,589 AUD|Low: $320 AUD|High: $1,609 AUD|Avg: $912 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$320 AUD
Retailer 8$397 AUD
Retailer 3$667 AUD
Retailer 9$675 AUD
Retailer 4$738 AUD
Retailer 10$769 AUD
Retailer 2$1,053 AUD
Retailer 5$1,184 AUD
Retailer 7$1,484 AUD
MOH London$1,589 AUD

42 data points across 10 retailers

16 retailers$320 AUD to $1,589 AUD

A
Cheapest Retailer
-
$320 AUD
$224 USD
A
Retailer 2
-
$371 AUD
$260 USD
View
Retailer 3
-
$397 AUD
$278 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$397 AUD
$278 USD
View
A
Retailer 5
-
$667 AUD
€445 EUR
View
B+
Retailer 6
-
$675 AUD
$473 USD
View
A
Retailer 7
-
$738 AUD
£407 GBP
View
A
Retailer 8
-
$759 AUD
$532 USD
View
A
Retailer 9
-
$769 AUD
$539 USD
View
B+
Retailer 10
-
$1,053 AUD
$738 USD
View
Retailer 11
-
$1,163 AUD
$815 USD
View
Price last confirmed 47 days ago
B+
Retailer 12
-
$1,184 AUD
$830 USD
View
B+
Retailer 13
-
$1,276 AUD
$894 USD
View
B
Retailer 14
-
$1,350 AUD
$946 USD
View
B
Retailer 15
-
$1,484 AUD
$1,040 USD
View
Most Expensive
B
MOH London
LG799635486 · Nov 1
$1,589 AUD
£877 GBP
View
15 more retailers have this diamond
Prices start from $320 AUDSave up to $1,270 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
1.71ct Round
$320 AUD