Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG818654487

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

Certificate IGI LG818654487

Diamond specifications and retailer prices

From $583 USD
As of October 30, 2026
Save $4,597 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,180 USD at Do Amore Diamonds · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818654487 or 818654487. Listed at 12 retailers as of October 30, 2026, with prices from $583 to $5,180, a $4,597 spread on the same certified stone. Do Amore Diamonds lists it at $5,180. 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
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654487
Dimensions8.71 × 5.86 × 3.83 mm
L/W Ratio1.49
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
8.71 mm5.86 mm1.71 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654487
Side View
Table 63.0%Crown 44.4°Girdle: MED-STKPavilion 31.9°Culet: NoneDepth 65.4%

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: $5,180 USD|Low: $583 USD|High: $6,640 USD|Avg: $2,790 USD|-15.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 7$583 USD
Retailer 11$653 USD
Retailer 3$870 USD
Retailer 4$1,079 USD
Retailer 8$1,111 USD
Retailer 12$1,277 USD
Retailer 9$1,794 USD
Retailer 10$2,099 USD
Retailer 6$3,162 USD
Retailer 5$3,223 USD
Retailer 2$3,800 USD
Retailer 13$4,055 USD
Do Amore Diamonds$5,180 USD

30 data points across 13 retailers

12 retailers$583 USD to $5,180 USD

A
Cheapest Retailer
-
$583 USD
A
Retailer 2
-
$653 USD
View
A
Retailer 3
-
$870 USD
View
A
Retailer 4
-
$1,079 USD
View
A
Retailer 5
-
$1,111 USD
View
Retailer 6
-
$1,277 USD
€1,216 EUR
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,794 USD
View
B+
Retailer 8
-
$2,099 USD
View
B
Retailer 9
-
$3,162 USD
£2,490 GBP
View
B
Retailer 10
-
$3,800 USD
View
B
Retailer 11
-
$4,055 USD
View
Most Expensive
B
Do Amore Diamonds
27-D7290C018 · Oct 30
$5,180 USD
View
11 more retailers have this diamond
Prices start from $583 USDSave up to $4,597 USD

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
$583 USD