Radiant|Lab Grown|IGI

1.67ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG801693850

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

Certificate IGI LG801693850

Diamond specifications and retailer prices

From $570 USD
As of October 30, 2026
Save $4,720 USD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,290 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801693850 or 801693850. Listed at 13 retailers as of October 29, 2026, with prices from $570 to $5,290, a $4,720 spread on the same certified stone. Brilliant Earth lists it at $5,290. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801693850
Dimensions8.29 × 5.91 × 3.91 mm
L/W Ratio1.40
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
8.29 mm5.91 mm1.67 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801693850
Side View
Table 64.0%Crown 44°Girdle: Slightly ThickPavilion 32.7°Culet: NoneDepth 66.2%

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: $5,290 USD|Low: $570 USD|High: $6,000 USD|Avg: $2,433 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
Retailer 15
October 29, 2026
Retailer 8$570 USD
Retailer 14$638 USD
Retailer 10$837 USD
Retailer 4$850 USD
Retailer 5$1,034 USD
Retailer 9$1,088 USD
Retailer 15$1,248 USD
Retailer 12$1,754 USD
Retailer 13$2,052 USD
Retailer 2$3,091 USD
Retailer 6$3,159 USD
Retailer 7$3,267 USD
Retailer 3$3,985 USD
Retailer 11$5,060 USD
Brilliant Earth$5,290 USD

30 data points across 15 retailers

13 retailers$570 USD to $5,290 USD

A
Cheapest Retailer
-
$570 USD
A
Retailer 2
-
$638 USD
View
A
Retailer 3
-
$837 USD
View
A
Retailer 4
-
$850 USD
View
A
Retailer 5
-
$1,034 USD
View
A
Retailer 6
-
$1,088 USD
View
B+
Retailer 7
-
$1,248 USD
€1,189 EUR
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$1,754 USD
View
B+
Retailer 9
-
$2,052 USD
View
B
Retailer 10
-
$3,091 USD
£2,434 GBP
View
B
Retailer 11
-
$3,985 USD
View
B
Retailer 12
-
$5,060 USD
View
Most Expensive
B
Brilliant Earth
21014345Y · Oct 29
$5,290 USD
View
12 more retailers have this diamond
Prices start from $570 USDSave up to $4,720 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
$570 USD