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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780661578

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780661578

Diamond specifications and retailer prices

From £1,436 GBP
$1,924 USD
As of October 30, 2026
Save £6,557 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £7,993 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780661578 or 780661578. Listed at 11 retailers as of October 29, 2026, with prices from £1,436 to £7,993, a £6,557 spread on the same certified stone. Do Amore Diamonds lists it at £7,993. 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

3.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661578
Dimensions9.36 × 7.82 × 5.35 mm
L/W Ratio1.20
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
9.36 mm7.82 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661578
Side View
Table 61.0%Crown 36.9°Girdle: MED-STKPavilion 36.7°Culet: NoneDepth 68.4%

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: £7,993 GBP|Low: £1,436 GBP|High: £14,636 GBP|Avg: £4,618 GBP|-45.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2£1,436 GBP
Retailer 8£1,467 GBP
Retailer 4£1,846 GBP
Retailer 9£2,169 GBP
Retailer 5£2,494 GBP
Retailer 3£2,551 GBP
Retailer 7£3,733 GBP
Retailer 6£4,270 GBP
Retailer 11£4,825 GBP
Retailer 10£6,956 GBP
Do Amore Diamonds£7,993 GBP

31 data points across 11 retailers

11 retailers£1,436 GBP to £7,993 GBP

A+
Cheapest Retailer
-
£1,436 GBP
$1,924 USD
A
Retailer 2
-
£1,467 GBP
$1,965 USD
View
A
Retailer 3
-
£1,846 GBP
$2,473 USD
View
A
Retailer 4
-
£2,169 GBP
$2,906 USD
View
A
Retailer 5
-
£2,494 GBP
€3,183 EUR
View
A
Retailer 6
-
£2,551 GBP
$3,418 USD
View
Final sale: no returns
B+
Retailer 7
-
£3,733 GBP
$5,002 USD
View
B+
Retailer 8
-
£4,270 GBP
View
Retailer 9
-
£4,825 GBP
$6,465 USD
View
Price last confirmed 9 days ago
B
Retailer 10
-
£6,956 GBP
$9,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-9EA486FF2 · Oct 29
£7,993 GBP
$10,710 USD
View
10 more retailers have this diamond
Prices start from £1,436 GBPSave up to £6,557 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+
3.10ct Cushion
£1,436 GBP