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Cushion|Lab Grown|IGI

5.12ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG818636803

Shape and cutting style on the report: Rectangular cushion mixed cut

Certificate IGI LG818636803

Diamond specifications and retailer prices

From £1,741 GBP
$2,333 USD
As of October 31, 2026
Save £6,621 GBP (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £12,889 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 5.12ct lab-grown cushion diamond

This 5.12ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818636803 or 818636803. Listed at 16 retailers as of October 30, 2026, with a 380% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.12
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818636803
Dimensions12.81 × 7.99 × 5.51 mm
L/W Ratio1.60
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.81 mm7.99 mm5.12 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818636803
Side View
Table 61.0%Crown 38.6°Girdle: MED-THKPavilion 40.2°Culet: LargeDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
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 31
Current: £12,889 GBP|Low: £1,741 GBP|High: £13,456 GBP|Avg: £4,925 GBP|-4.2%
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
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 14£1,741 GBP
Retailer 7£2,098 GBP
Retailer 3£2,173 GBP
Retailer 12£2,295 GBP
Retailer 15£2,318 GBP
Retailer 9£3,052 GBP
Retailer 2£3,241 GBP
Retailer 6£4,140 GBP
Retailer 10£4,870 GBP
Retailer 8£4,875 GBP
Retailer 13£5,803 GBP
Retailer 4£6,021 GBP
Retailer 11£6,114 GBP
Retailer 5£8,362 GBP
Do Amore Diamonds£12,889 GBP

44 data points across 15 retailers

16 retailers£1,741 GBP to £8,362 GBP

A
Cheapest Retailer
-
£1,741 GBP
$2,333 USD
B+
Retailer 2
-
£2,098 GBP
$2,811 USD
View
Final sale: no returns
Retailer 3
-
£2,173 GBP
$2,912 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£2,295 GBP
$3,075 USD
View
B+
Retailer 5
-
£2,318 GBP
$3,106 USD
View
B+
Retailer 6
-
£3,052 GBP
$4,090 USD
View
B+
Retailer 7
-
£3,241 GBP
View
B
Retailer 8
-
£4,140 GBP
View
Retailer 9
-
£4,870 GBP
A$10,039 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
£4,875 GBP
ZAR 105,521 ZAR
View
B
Retailer 11
-
£5,803 GBP
$7,776 USD
View
B
Retailer 12
-
£6,021 GBP
$8,067 USD
View
B
Retailer 13
-
£6,114 GBP
View
B
Retailer 14
-
£8,362 GBP
$11,204 USD
View
Retailer 15
-
£10,501 GBP
$14,070 USD
View
Price under review
Most Expensive
Do Amore Diamonds
27-BC2FEE840 · Oct 31
£12,889 GBP
$17,270 USD
View
Price under review
15 more retailers have this diamond
Prices start from £1,741 GBPSave up to £6,621 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
5.12ct Cushion
£1,741 GBP