CaratHunter
Plans
Radiant|Lab Grown|IGI

1.71ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG519238354

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

Certificate IGI LG519238354

Diamond specifications and retailer prices

From $774 AUD
$544 USD
As of October 23, 2026
Save $3,241 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,015 AUD at MOH London · As of October 26, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG519238354 or 519238354. Listed at 12 retailers as of October 23, 2026, with prices from $774 to $4,015, a $3,241 spread on the same certified stone. MOH London lists it at $4,015. 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

1.71
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle30°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519238354
Dimensions7.69 × 5.92 × 4.07 mm
L/W Ratio1.30
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
7.69 mm5.92 mm1.71 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519238354
Side View
Table 68.5%Crown 42.6°Girdle: MediumPavilion 30°Culet: NoneDepth 68.8%

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: Oct 23
Current: $4,015 AUD|Low: $619 AUD|High: $4,058 AUD|Avg: $1,778 AUD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 10$868 AUD
Retailer 7$961 AUD
Retailer 11$965 AUD
Retailer 6$1,153 AUD
Retailer 4$1,394 AUD
Retailer 9$1,483 AUD
Retailer 2$1,492 AUD
Retailer 5$2,480 AUD
Retailer 8$2,527 AUD
Retailer 3$2,574 AUD
MOH London$4,015 AUD

41 data points across 11 retailers

12 retailers$774 AUD to $4,015 AUD

A
Cheapest Retailer
-
$774 AUD
$544 USD
B+
Retailer 2
-
$868 AUD
$610 USD
View
B+
Retailer 3
-
$868 AUD
$610 USD
View
Final sale: no returns
B+
Retailer 4
-
$961 AUD
$675 USD
View
B+
Retailer 5
-
$965 AUD
$678 USD
View
B+
Retailer 6
-
$1,153 AUD
$810 USD
View
B
Retailer 7
-
$1,394 AUD
€933 EUR
View
B
Retailer 8
-
$1,483 AUD
$1,042 USD
View
B
Retailer 9
-
$1,492 AUD
£825 GBP
View
B
Retailer 10
-
$2,480 AUD
$1,742 USD
View
B
Retailer 11
-
$2,527 AUD
$1,775 USD
View
Most Expensive
B
MOH London
LG519238354 · Oct 26
$4,015 AUD
£2,221 GBP
View
11 more retailers have this diamond
Prices start from $774 AUDSave up to $3,241 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
$774 AUD