Radiant|Lab Grown|IGI

1.70ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG784645655

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

Certificate IGI LG784645655

Diamond specifications and retailer prices

From $507 USD
As of October 30, 2026
Save $4,893 USD (91%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,400 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.7ct lab-grown radiant diamond

This 1.7ct 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 LG784645655 or 784645655. Listed at 14 retailers as of October 29, 2026, with prices from $507 to $5,400, a $4,893 spread on the same certified stone. Brilliant Earth lists it at $5,400. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784645655
Dimensions8.56 × 5.94 × 3.89 mm
L/W Ratio1.44
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
8.56 mm5.94 mm1.70 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784645655
Side View
Table 62.0%Crown 40.3°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 65.5%

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 30
Current: $5,400 USD|Low: $498 USD|High: $5,570 USD|Avg: $2,213 USD|-3.1%
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 8$507 USD
Retailer 14$568 USD
Retailer 6$698 USD
Retailer 7$750 USD
Retailer 10$768 USD
Retailer 9$977 USD
Retailer 5$1,049 USD
Retailer 4$1,110 USD
Retailer 12$1,623 USD
Retailer 13$1,826 USD
Retailer 2$3,030 USD
Retailer 3$4,030 USD
Retailer 11$4,500 USD
Brilliant Earth$5,400 USD

33 data points across 14 retailers

14 retailers$507 USD to $5,400 USD

A
Cheapest Retailer
-
$507 USD
A
Retailer 2
-
$568 USD
View
A
Retailer 3
-
$698 USD
View
Final sale: no returns
A
Retailer 4
-
$750 USD
View
A
Retailer 5
-
$768 USD
View
A
Retailer 6
-
$977 USD
View
A
Retailer 7
-
$1,049 USD
View
A
Retailer 8
-
$1,110 USD
€1,057 EUR
View
B+
Retailer 9
-
$1,623 USD
View
B+
Retailer 10
-
$1,826 USD
View
B
Retailer 11
-
$3,030 USD
£2,386 GBP
View
B
Retailer 12
-
$4,030 USD
View
B
Retailer 13
-
$4,500 USD
View
Most Expensive
B
Brilliant Earth
19064695Y · Oct 29
$5,400 USD
View
13 more retailers have this diamond
Prices start from $507 USDSave up to $4,893 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
1.70ct Radiant
$507 USD