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Radiant|Lab Grown|IGI

1.71ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG800677445

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

Certificate IGI LG800677445

Diamond specifications and retailer prices

From $583 USD
As of October 27, 2026
Save $4,847 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,430 USD at Brilliant Earth · As of October 29, 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 very-good cut grade and certified by IGI LG800677445 or 800677445. Listed at 14 retailers as of October 27, 2026, with prices from $583 to $5,430, a $4,847 spread on the same certified stone. Brilliant Earth lists it at $5,430. 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
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677445
Dimensions8.21 × 5.84 × 4.15 mm
L/W Ratio1.41
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
8.21 mm5.84 mm1.71 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677445
Side View
Table 60.0%Crown 42.9°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 71.1%

Caratlytics Score

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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 27
Current: $5,430 USD|Low: $553 USD|High: $6,140 USD|Avg: $2,222 USD|-3.0%
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
October 29, 2026
Retailer 7$583 USD
Retailer 13$653 USD
Retailer 6$774 USD
Retailer 9$853 USD
Retailer 4$870 USD
Retailer 5$1,079 USD
Retailer 8$1,111 USD
Retailer 14$1,277 USD
Retailer 11$1,794 USD
Retailer 12$2,099 USD
Retailer 2$3,162 USD
Retailer 3$4,055 USD
Retailer 10$5,180 USD
Brilliant Earth$5,430 USD

31 data points across 14 retailers

14 retailers$583 USD to $5,430 USD

A
Cheapest Retailer
-
$583 USD
A
Retailer 2
-
$653 USD
View
A
Retailer 3
-
$774 USD
View
Final sale: no returns
A
Retailer 4
-
$853 USD
View
A
Retailer 5
-
$870 USD
View
A
Retailer 6
-
$1,079 USD
View
A
Retailer 7
-
$1,111 USD
View
B+
Retailer 8
-
$1,277 USD
€1,216 EUR
View
B+
Retailer 9
-
$1,794 USD
View
B
Retailer 10
-
$2,099 USD
View
B
Retailer 11
-
$3,162 USD
£2,490 GBP
View
B
Retailer 12
-
$4,055 USD
View
B
Retailer 13
-
$5,180 USD
View
Most Expensive
B
Brilliant Earth
20498003Y · Oct 29
$5,430 USD
View
13 more retailers have this diamond
Prices start from $583 USDSave up to $4,847 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