Radiant|Lab Grown|IGI

3.17ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG579395078

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

Certificate IGI LG579395078

Diamond specifications and retailer prices

From $3,553 USD

As of November 2, 2026

Save $9,148 USD (72%) vs most expensive(unlock to see where)

10 retailers carry this diamond

Most expensive: $12,701 USD at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 3.17ct lab-grown radiant diamond

This 3.17ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG579395078 or 579395078. Listed at 10 retailers as of October 31, 2026, with prices from $3,553 to $12,701, a $9,148 spread on the same certified stone. Taylor and Hart lists it at $12,701. 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

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle49.5°

Pavilion angle31.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG579395078

Dimensions8.07 × 8.04 × 5.31 mm

L/W Ratio1.00

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG579395078

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2

Current: $4,005 USD|Low: $3,553 USD|High: $13,524 USD|Avg: $6,805 USD|-1.2%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Taylor and Hart

November 2, 2026

Retailer 10$3,553 USD

Retailer 9$3,639 USD

Retailer 8$3,795 USD

Retailer 1$4,005 USD

Retailer 3$4,924 USD

Retailer 6$5,210 USD

Retailer 11$6,294 USD

Retailer 5$8,447 USD

Retailer 7$9,074 USD

Retailer 4$9,223 USD

Retailer 2$10,330 USD

Taylor and Hart$12,701 USD

37 data points across 12 retailers

10 retailers$3,553 USD to $12,701 USD

B+

Cheapest Retailer

$3,553 USD

Retailer 2

$3,639 USD

View

Price last confirmed 20 days ago

B+

Retailer 3

$3,795 USD

View

B+

Retailer 4

$4,005 USD

£3,153 GBP

View

B+

Retailer 5

$5,210 USD

View

Retailer 6

$6,294 USD

£4,956 GBP

View

Retailer 7

$8,447 USD

ZAR 136,465 ZAR

View

Retailer 8

$9,074 USD

View

Retailer 9

$9,223 USD

£7,262 GBP

View

Most Expensive

Taylor and Hart

IEJVIMC · Oct 31

$12,701 USD

View

9 more retailers have this diamond

Prices start from $3,553 USDSave up to $9,148 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.

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B+

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