Radiant|Lab Grown|IGI

1.67ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG636400270

Certificate IGI LG636400270

Diamond specifications and retailer prices

From $628 USD
As of October 28, 2026
Save $2,562 USD (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,190 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.67ct lab-grown radiant diamond

This 1.67ct 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 LG636400270 or 636400270. Listed at 7 retailers as of October 28, 2026, with prices from $628 to $3,190, a $2,562 spread on the same certified stone. Brilliant Earth lists it at $3,190. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG636400270
Dimensions6.01 × 6.01 × 3.99 mm
L/W Ratio1.00
Top View
6.01 mm6.01 mm1.67 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636400270
Side View
Table 64.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $3,190 USD|Low: $448 USD|High: $3,290 USD|Avg: $1,511 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 23, 2026
Retailer 8$448 USD
Retailer 5$628 USD
Retailer 2$816 USD
Retailer 4$1,137 USD
Retailer 7$1,333 USD
Retailer 6$1,532 USD
Retailer 10$1,751 USD
Retailer 9$1,931 USD
Retailer 3$2,360 USD
Brilliant Earth$3,190 USD

16 data points across 10 retailers

7 retailers$628 USD to $3,190 USD

A
Cheapest Retailer
-
$628 USD
A
Retailer 2
-
$816 USD
€777 EUR
View
B+
Retailer 3
-
$1,137 USD
View
B+
Retailer 4
-
$2,360 USD
View
Price last confirmed 10 days ago
B
Retailer 5
-
$2,770 USD
View
Price last confirmed 86 days ago
B
Retailer 6
-
$3,160 USD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21311935A · Oct 29
$3,190 USD
View
6 more retailers have this diamond
Prices start from $628 USDSave up to $2,562 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
1.67ct Radiant
$628 USD