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Radiant|Lab Grown|IGI

1.71ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG578353116

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG578353116

Diamond specifications and retailer prices

From $260 AUD
$182 USD
As of October 27, 2026
Save $2,237 AUD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,497 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.71ct lab-grown radiant diamond

This 1.71ct lab-grown radiant 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 LG578353116 or 578353116. Listed at 9 retailers as of October 27, 2026, with prices from $260 to $2,497, a $2,237 spread on the same certified stone. Do Amore Diamonds lists it at $2,497. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578353116
Dimensions8.51 × 5.72 × 3.89 mm
L/W Ratio1.49
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
8.51 mm5.72 mm1.71 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578353116
Side View
Table 65.0%Crown 46.1°Girdle: MediumPavilion 35°Culet: NoneDepth 68.0%

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 27
Current: $2,497 AUD|Low: $208 AUD|High: $2,597 AUD|Avg: $1,068 AUD|-3.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 6$260 AUD
Retailer 3$301 AUD
Retailer 9$303 AUD
Retailer 5$569 AUD
Retailer 4$1,094 AUD
Retailer 8$1,136 AUD
Retailer 7$1,143 AUD
Retailer 2$1,671 AUD
Do Amore Diamonds$2,497 AUD

21 data points across 9 retailers

9 retailers$260 AUD to $2,497 AUD

A
Cheapest Retailer
-
$260 AUD
$182 USD
A
Retailer 2
-
$301 AUD
$211 USD
View
A
Retailer 3
-
$303 AUD
$212 USD
View
Final sale: no returns
B+
Retailer 4
-
$569 AUD
$399 USD
View
Retailer 5
-
$1,094 AUD
$767 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$1,136 AUD
$796 USD
View
B+
Retailer 7
-
$1,143 AUD
$801 USD
View
B
Retailer 8
-
$1,671 AUD
£922 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9AEFA5AC9 · Oct 29
$2,497 AUD
$1,750 USD
View
8 more retailers have this diamond
Prices start from $260 AUDSave up to $2,237 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 Radiant
$260 AUD