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Radiant|Lab Grown|IGI

1.71ct I VS2 Radiant Lab Grown Diamond

ID • I/VS2 • IGI LG512205180

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

Certificate IGI LG512205180

Diamond specifications and retailer prices

From $1,352 AUD
$950 USD
As of October 31, 2026
Save $4,310 AUD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,843 AUD at MOH London · As of October 29, 2026
View at MOH London

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 I colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG512205180 or 512205180. Listed at 11 retailers as of October 31, 2026, with a 319% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
I
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205180
Dimensions7.94 × 5.89 × 4.14 mm
L/W Ratio1.35
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
7.94 mm5.89 mm1.71 ctI / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205180
Side View
Table 68.0%Crown 37.8°Girdle: Slightly ThickPavilion 31.5°Culet: NoneDepth 70.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $7,843 AUD|Low: $1,352 AUD|High: $7,894 AUD|Avg: $4,055 AUD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,352 AUD
Retailer 5$2,355 AUD
Retailer 9$2,561 AUD
Retailer 6$2,732 AUD
Retailer 11$2,975 AUD
Retailer 3$3,666 AUD
Retailer 7$4,292 AUD
Retailer 4$4,709 AUD
Retailer 8$5,119 AUD
Retailer 10$5,663 AUD
MOH London$7,843 AUD

17 data points across 11 retailers

11 retailers$1,352 AUD to $5,663 AUD

B+
Cheapest Retailer
-
$1,352 AUD
$950 USD
B
Retailer 2
-
$2,355 AUD
$1,654 USD
View
B
Retailer 3
-
$2,561 AUD
$1,799 USD
View
B
Retailer 4
-
$2,732 AUD
$1,919 USD
View
Retailer 5
-
$2,732 AUD
$1,919 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
$2,975 AUD
$2,090 USD
View
B
Retailer 7
-
$4,292 AUD
$3,015 USD
View
B
Retailer 8
-
$4,709 AUD
$3,308 USD
View
B
Retailer 9
-
$5,119 AUD
$3,596 USD
View
B
Retailer 10
-
$5,663 AUD
£3,132 GBP
View
Most Expensive
MOH London
LG512205180 · Oct 29
$7,843 AUD
£4,338 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $1,352 AUDSave up to $4,310 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.

B+
1.71ct Radiant
$1,352 AUD