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Cushion|Lab Grown|IGI

5.17ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG784644159

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG784644159

Diamond specifications and retailer prices

From £4,747 GBP
$6,360 USD
As of October 30, 2026
Save £26,465 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £31,212 GBP at Do Amore Diamonds · As of October 31, 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 LG784644159 or 784644159. Listed at 12 retailers as of October 30, 2026, with prices from £4,747 to £31,212, a £26,465 spread on the same certified stone. Do Amore Diamonds lists it at £31,212. 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 angle36.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644159
Dimensions9.99 × 9.87 × 6.72 mm
L/W Ratio1.01
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
9.99 mm9.87 mm5.17 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644159
Side View
Table 60.0%Crown 36.9°Girdle: THK-VTKPavilion 39.1°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
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: £31,212 GBP|Low: £4,747 GBP|High: £36,647 GBP|Avg: £14,826 GBP|-13.4%
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
Retailer 13
October 30, 2026
Retailer 2£4,747 GBP
Retailer 9£5,176 GBP
Retailer 7£5,842 GBP
Retailer 13£6,821 GBP
Retailer 12£8,175 GBP
Retailer 3£9,217 GBP
Retailer 8£10,243 GBP
Retailer 10£11,675 GBP
Retailer 6£12,143 GBP
Retailer 11£14,602 GBP
Retailer 5£20,489 GBP
Do Amore Diamonds£31,212 GBP
Retailer 4£36,647 GBP

30 data points across 13 retailers

12 retailers£4,747 GBP to £31,212 GBP

A
Cheapest Retailer
-
£4,747 GBP
$6,360 USD
A
Retailer 2
-
£5,176 GBP
$6,935 USD
View
A
Retailer 3
-
£5,842 GBP
$7,828 USD
View
A
Retailer 4
-
£6,821 GBP
$9,140 USD
View
Final sale: no returns
A
Retailer 5
-
£8,175 GBP
$10,953 USD
View
Retailer 6
-
£9,217 GBP
$12,349 USD
View
Price last confirmed 82 days ago
A
Retailer 7
-
£10,243 GBP
€13,071 EUR
View
A
Retailer 8
-
£11,675 GBP
View
B+
Retailer 9
-
£12,143 GBP
$16,270 USD
View
B+
Retailer 10
-
£14,602 GBP
$19,565 USD
View
B
Retailer 11
-
£20,489 GBP
$27,453 USD
View
Most Expensive
B
Do Amore Diamonds
27-3B0A4184E · Oct 31
£31,212 GBP
$41,820 USD
View
11 more retailers have this diamond
Prices start from £4,747 GBPSave up to £26,465 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
£4,747 GBP