Radiant|Lab Grown|IGI

1.70ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG726542816

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

Certificate IGI LG726542816

Diamond specifications and retailer prices

From $312 USD
As of October 28, 2026
Save $3,118 USD (91%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,430 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG726542816 or 726542816. Listed at 10 retailers as of October 28, 2026, with prices from $312 to $3,430, a $3,118 spread on the same certified stone. Brilliant Earth lists it at $3,430. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726542816
Dimensions8.46 × 5.96 × 3.91 mm
L/W Ratio1.42
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
8.46 mm5.96 mm1.70 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726542816
Side View
Table 64.0%Crown 42.6°Girdle: MED-STKPavilion 34.5°Culet: NoneDepth 65.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $3,430 USD|Low: $312 USD|High: $3,430 USD|Avg: $1,344 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 6$312 USD
Retailer 4$525 USD
Retailer 5$559 USD
Retailer 2$609 USD
Retailer 7$1,117 USD
Retailer 8$1,218 USD
Retailer 10$1,284 USD
Retailer 3$1,397 USD
Retailer 9$2,665 USD
Brilliant Earth$3,430 USD

42 data points across 10 retailers

10 retailers$312 USD to $3,430 USD

A
Cheapest Retailer
-
$312 USD
Final sale: no returns
A
Retailer 2
-
$525 USD
View
A
Retailer 3
-
$559 USD
€532 EUR
View
A
Retailer 4
-
$609 USD
£480 GBP
View
A
Retailer 5
-
$1,117 USD
SGD 1,509 SGD
View
B+
Retailer 6
-
$1,218 USD
View
B+
Retailer 7
-
$1,284 USD
View
B+
Retailer 8
-
$1,397 USD
£1,100 GBP
View
Retailer 9
-
$2,665 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
15975265A · Oct 29
$3,430 USD
View
9 more retailers have this diamond
Prices start from $312 USDSave up to $3,118 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
$312 USD