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Cushion|Lab Grown|IGI

5.17ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780662161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780662161

Diamond specifications and retailer prices

From £4,703 GBP
$6,301 USD
As of October 30, 2026
Save £26,203 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £30,906 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 5.17ct lab-grown cushion diamond

This 5.17ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662161 or 780662161. Listed at 11 retailers as of October 30, 2026, with prices from £4,703 to £30,906, a £26,203 spread on the same certified stone. Do Amore Diamonds lists it at £30,906. 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

5.17
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662161
Dimensions11.30 × 9.37 × 6.18 mm
L/W Ratio1.21
Girdle conditionFaceted
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
11.30 mm9.37 mm5.17 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662161
Side View
Table 58.0%Crown 32.1°Girdle: STK-THKPavilion 36.3°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £30,906 GBP|Low: £4,703 GBP|High: £36,647 GBP|Avg: £14,341 GBP|-14.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2£4,703 GBP
Retailer 8£5,150 GBP
Retailer 6£5,831 GBP
Retailer 12£6,821 GBP
Retailer 11£8,122 GBP
Retailer 3£9,217 GBP
Retailer 7£10,140 GBP
Retailer 9£11,560 GBP
Retailer 5£12,143 GBP
Retailer 10£14,456 GBP
Do Amore Diamonds£30,906 GBP
Retailer 4£36,647 GBP

30 data points across 12 retailers

11 retailers£4,703 GBP to £30,906 GBP

A+
Cheapest Retailer
-
£4,703 GBP
$6,301 USD
A
Retailer 2
-
£5,150 GBP
$6,900 USD
View
A
Retailer 3
-
£5,831 GBP
$7,813 USD
View
A
Retailer 4
-
£6,821 GBP
$9,140 USD
View
Final sale: no returns
A
Retailer 5
-
£8,122 GBP
$10,882 USD
View
Retailer 6
-
£9,217 GBP
$12,349 USD
View
Price last confirmed 82 days ago
A
Retailer 7
-
£10,140 GBP
€12,939 EUR
View
A
Retailer 8
-
£11,560 GBP
View
B+
Retailer 9
-
£12,143 GBP
$16,270 USD
View
B+
Retailer 10
-
£14,456 GBP
$19,369 USD
View
Most Expensive
B
Do Amore Diamonds
27-15999F6D0 · Oct 30
£30,906 GBP
$41,410 USD
View
10 more retailers have this diamond
Prices start from £4,703 GBPSave up to £26,203 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+
5.17ct Cushion
£4,703 GBP