Radiant|Lab Grown|IGI

3.17ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG843670833

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

Certificate IGI LG843670833

Diamond specifications and retailer prices

From $2,520 USD
As of October 28, 2026
Save $6,090 USD (71%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $8,610 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.17ct lab-grown radiant diamond

This 3.17ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843670833 or 843670833. Listed at 4 retailers as of October 28, 2026, with prices from $2,520 to $8,610, a $6,090 spread on the same certified stone. Brilliant Earth lists it at $8,610. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.17
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843670833
Dimensions8.36 × 8.17 × 5.44 mm
L/W Ratio1.02
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
8.36 mm8.17 mm3.17 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843670833
Side View
Table 67.0%Crown 44.5°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $8,610 USD|Low: $2,520 USD|High: $12,120 USD|Avg: $5,641 USD|-29.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 28, 2026
Retailer 3$2,520 USD
Retailer 2$2,878 USD
Retailer 4$5,495 USD
Brilliant Earth$8,610 USD

5 data points across 4 retailers

4 retailers$2,520 USD to $8,610 USD

A
Cheapest Retailer
-
$2,520 USD
A
Retailer 2
-
$2,878 USD
€2,741 EUR
View
B+
Retailer 3
-
$5,495 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
22165278Y · Oct 28
$8,610 USD
View
3 more retailers have this diamond
Prices start from $2,520 USDSave up to $6,090 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
3.17ct Radiant
$2,520 USD