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Radiant|Lab Grown|IGI

3.17ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728561176

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

Certificate IGI LG728561176

Diamond specifications and retailer prices

From £746 GBP
$993 USD
As of October 30, 2026
Save £5,878 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,623 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 LG728561176 or 728561176. Listed at 18 retailers as of October 30, 2026, with prices from £746 to £6,623, a £5,878 spread on the same certified stone. Do Amore Diamonds lists it at £6,623. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728561176
Dimensions10.25 × 7.18 × 4.84 mm
L/W Ratio1.43
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
10.25 mm7.18 mm3.17 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728561176
Side View
Table 66.0%Crown 44.3°Girdle: Slightly ThickPavilion 33.3°Culet: NoneDepth 67.4%

Caratlytics Score

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A+
Exceptional
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: £6,623 GBP|Low: £746 GBP|High: £7,997 GBP|Avg: £2,805 GBP|-17.2%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 17
October 30, 2026
Retailer 2£746 GBP
Retailer 17£828 GBP
Retailer 6£995 GBP
Retailer 14£1,017 GBP
Retailer 9£1,047 GBP
Retailer 13£1,408 GBP
Retailer 5£1,586 GBP
Retailer 12£1,789 GBP
Retailer 10£1,823 GBP
Retailer 15£1,844 GBP
Retailer 3£2,244 GBP
Retailer 11£2,468 GBP
Retailer 16£3,134 GBP
Retailer 4£4,126 GBP
Retailer 7£5,305 GBP
Retailer 8£6,466 GBP
Do Amore Diamonds£6,623 GBP

31 data points across 17 retailers

18 retailers£746 GBP to £6,623 GBP

A+
Cheapest Retailer
-
£746 GBP
$993 USD
A
Retailer 2
-
£828 GBP
$1,102 USD
View
A
Retailer 3
-
£995 GBP
$1,325 USD
View
A
Retailer 4
-
£1,017 GBP
$1,354 USD
View
A
Retailer 5
-
£1,047 GBP
$1,394 USD
View
Final sale: no returns
A
Retailer 6
-
£1,408 GBP
$1,875 USD
View
A
Retailer 7
-
£1,586 GBP
€2,011 EUR
View
A
Retailer 8
-
£1,789 GBP
$2,383 USD
View
A
Retailer 9
-
£1,823 GBP
$2,428 USD
View
A
Retailer 10
-
£1,844 GBP
$2,456 USD
View
Retailer 11
-
£2,244 GBP
A$4,597 AUD
View
Price last confirmed 8 days ago
A
Retailer 12
-
£2,468 GBP
$3,287 USD
View
B+
Retailer 13
-
£3,134 GBP
View
Retailer 14
-
£4,126 GBP
$5,495 USD
View
Price last confirmed 11 days ago
Retailer 15
-
£5,305 GBP
A$10,868 AUD
View
Price last confirmed 21 days ago
Retailer 16
-
£5,442 GBP
$7,247 USD
View
B
Retailer 17
-
£6,466 GBP
$8,610 USD
View
Most Expensive
B
Do Amore Diamonds
27-A3CD23EF5 · Oct 30
£6,623 GBP
$8,820 USD
View
17 more retailers have this diamond
Prices start from £746 GBPSave up to £5,878 GBP

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
£746 GBP