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Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG811638560

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

Certificate IGI LG811638560

Diamond specifications and retailer prices

From $848 AUD
$596 USD
As of October 30, 2026
Save $4,960 AUD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $8,043 AUD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638560 or 811638560. Listed at 23 retailers as of October 28, 2026, with a 585% 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
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.4°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638560
Dimensions8.23 × 6.01 × 4.02 mm
L/W Ratio1.37
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
8.23 mm6.01 mm1.71 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638560
Side View
Table 67.0%Crown 45.4°Girdle: MED-STKPavilion 36°Culet: NoneDepth 66.9%

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 30
Current: $5,680 AUD|Low: $848 AUD|High: $7,801 AUD|Avg: $2,789 AUD|-27.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 12$848 AUD
Retailer 2$948 AUD
Retailer 19$950 AUD
Retailer 11$1,052 AUD
Retailer 18$1,239 AUD
Retailer 4$1,616 AUD
Retailer 13$1,632 AUD
Retailer 3$1,716 AUD
Retailer 16$1,808 AUD
Retailer 6$1,940 AUD
Retailer 5$2,279 AUD
Retailer 9$2,766 AUD
Retailer 7$3,059 AUD
Retailer 8$3,403 AUD
Retailer 14$3,451 AUD
Retailer 10$3,577 AUD
Retailer 20$3,764 AUD
Retailer 15$4,590 AUD
Brilliant Earth$5,680 AUD
Retailer 17$5,808 AUD

27 data points across 20 retailers

23 retailers$848 AUD to $5,808 AUD

A
Cheapest Retailer
-
$848 AUD
$596 USD
A
Retailer 2
-
$948 AUD
$666 USD
View
Final sale: no returns
A
Retailer 3
-
$950 AUD
$667 USD
View
Retailer 4
-
$1,051 AUD
$738 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
$1,052 AUD
$739 USD
View
A
Retailer 6
-
$1,239 AUD
$870 USD
View
A
Retailer 7
-
$1,616 AUD
$1,135 USD
View
A
Retailer 8
-
$1,632 AUD
£902 GBP
View
Retailer 9
-
$1,716 AUD
€1,148 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$1,808 AUD
ZAR 20,514 ZAR
View
B+
Retailer 11
-
$1,940 AUD
$1,363 USD
View
B+
Retailer 12
-
$2,279 AUD
$1,601 USD
View
B+
Retailer 13
-
$2,766 AUD
$1,943 USD
View
B+
Retailer 14
-
$3,059 AUD
£1,692 GBP
View
B+
Retailer 15
-
$3,403 AUD
$2,390 USD
View
B+
Retailer 16
-
$3,451 AUD
$2,424 USD
View
B+
Retailer 17
-
$3,577 AUD
SGD 3,395 SGD
View
B+
Retailer 18
-
$3,691 AUD
$2,593 USD
View
B
Retailer 19
-
$3,764 AUD
$2,644 USD
View
B
Retailer 20
-
$4,590 AUD
£2,539 GBP
View
B
Retailer 21
-
$5,680 AUD
$3,990 USD
View
B
Retailer 22
-
$5,808 AUD
$4,080 USD
View
Most Expensive
Brilliant Earth
20987967A · Sep 28
$8,043 AUD
$5,650 USD
View
Price last confirmed 32 days ago
22 more retailers have this diamond
Prices start from $848 AUDSave up to $4,960 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
$848 AUD