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Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG818654290

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

Certificate IGI LG818654290

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)
22 retailers carry this diamond
Most expensive: $5,808 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG818654290 or 818654290. Listed at 22 retailers as of October 28, 2026, with prices from $848 to $5,808, a $4,960 spread on the same certified stone. Rare Carat lists it at $5,808. 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 angle42.2°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654290
Dimensions8.08 × 5.93 × 4.08 mm
L/W Ratio1.36
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
8.08 mm5.93 mm1.71 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654290
Side View
Table 63.0%Crown 42.2°Girdle: MED-STKPavilion 35.7°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 30
Current: $5,808 AUD|Low: $848 AUD|High: $7,801 AUD|Avg: $2,692 AUD|-1.1%
Rare Carat
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
Retailer 21
October 31, 2026
Retailer 12$848 AUD
Retailer 19$950 AUD
Retailer 8$985 AUD
Retailer 11$1,052 AUD
Retailer 18$1,239 AUD
Retailer 21$1,362 AUD
Retailer 4$1,616 AUD
Retailer 2$1,632 AUD
Retailer 3$1,716 AUD
Retailer 17$1,808 AUD
Retailer 6$1,940 AUD
Retailer 5$2,279 AUD
Retailer 9$2,766 AUD
Retailer 7$3,059 AUD
Retailer 14$3,403 AUD
Retailer 13$3,451 AUD
Retailer 10$3,577 AUD
Retailer 20$3,764 AUD
Retailer 16$4,590 AUD
Retailer 15$5,680 AUD
Rare Carat$5,808 AUD

31 data points across 21 retailers

22 retailers$848 AUD to $5,808 AUD

A
Cheapest Retailer
-
$848 AUD
$596 USD
A
Retailer 2
-
$950 AUD
$667 USD
View
A
Retailer 3
-
$985 AUD
$692 USD
View
Final sale: no returns
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
-
$1,362 AUD
$957 USD
View
A
Retailer 8
-
$1,616 AUD
$1,135 USD
View
A
Retailer 9
-
$1,632 AUD
£902 GBP
View
Retailer 10
-
$1,716 AUD
€1,148 EUR
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$1,808 AUD
ZAR 20,514 ZAR
View
B+
Retailer 12
-
$1,940 AUD
$1,363 USD
View
B+
Retailer 13
-
$2,279 AUD
$1,601 USD
View
B+
Retailer 14
-
$2,766 AUD
$1,943 USD
View
B+
Retailer 15
-
$3,059 AUD
£1,692 GBP
View
B+
Retailer 16
-
$3,403 AUD
$2,390 USD
View
B+
Retailer 17
-
$3,451 AUD
$2,424 USD
View
B+
Retailer 18
-
$3,577 AUD
SGD 3,395 SGD
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
Most Expensive
B
Rare Carat
PD-237885 · Oct 28
$5,808 AUD
$4,080 USD
View
21 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