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Cushion|Lab Grown|IGI

1.83ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG839684867

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839684867

Diamond specifications and retailer prices

From £1,055 GBP
As of October 27, 2026
Save £3,724 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,779 GBP at Riddles Jewelry · As of October 27, 2026
View at Riddles Jewelry

About this 1.83ct lab-grown cushion diamond

This 1.83ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839684867 or 839684867. Listed at 19 retailers as of October 27, 2026, with prices from £1,055 to £4,779, a £3,724 spread on the same certified stone. Riddles Jewelry lists it at £4,779. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684867
Dimensions8.60 × 6.39 × 4.27 mm
L/W Ratio1.35
Girdle conditionFaceted
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
8.60 mm6.39 mm1.83 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684867
Side View
Table 61.0%Crown 35.9°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 66.8%

Caratlytics Score

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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 27
Current: £1,414 GBP|Low: £1,037 GBP|High: £4,779 GBP|Avg: £2,292 GBP|+0.5%
Retailer 1
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Retailer 19
Riddles Jewelry
October 27, 2026
Retailer 12£1,055 GBP
Retailer 4£1,057 GBP
Retailer 16£1,060 GBP
Retailer 8£1,142 GBP
Retailer 7£1,261 GBP
Retailer 17£1,294 GBP
Retailer 13£1,340 GBP
Retailer 1£1,414 GBP
Retailer 9£1,591 GBP
Retailer 15£1,695 GBP
Retailer 5£2,278 GBP
Retailer 3£2,502 GBP
Retailer 18£2,571 GBP
Retailer 6£2,819 GBP
Retailer 2£2,974 GBP
Retailer 14£3,160 GBP
Retailer 11£3,251 GBP
Retailer 19£3,898 GBP
Retailer 10£4,485 GBP
Riddles Jewelry£4,779 GBP

22 data points across 20 retailers

19 retailers£1,055 GBP to £4,779 GBP

A
Cheapest Retailer
-
£1,055 GBP
A
Retailer 2
-
£1,060 GBP
$1,420 USD
View
A
Retailer 3
-
£1,142 GBP
$1,530 USD
View
A
Retailer 4
-
£1,261 GBP
$1,690 USD
View
B+
Retailer 5
-
£1,294 GBP
$1,734 USD
View
A
Retailer 6
-
£1,340 GBP
View
B+
Retailer 7
-
£1,414 GBP
€1,804 EUR
View
B+
Retailer 8
-
£1,591 GBP
$2,132 USD
View
B+
Retailer 9
-
£1,695 GBP
ZAR 36,682 ZAR
View
B+
Retailer 10
-
£2,278 GBP
$3,052 USD
View
B
Retailer 11
-
£2,502 GBP
$3,353 USD
View
B
Retailer 12
-
£2,571 GBP
View
B
Retailer 13
-
£2,819 GBP
CA$5,246 CAD
View
B
Retailer 14
-
£2,974 GBP
$3,985 USD
View
B
Retailer 15
-
£3,160 GBP
View
B
Retailer 16
-
£3,251 GBP
$4,356 USD
View
Retailer 17
-
£3,898 GBP
$5,223 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
£4,485 GBP
$6,009 USD
View
Most Expensive
B
Riddles Jewelry
1988600944 · Oct 27
£4,779 GBP
$6,403 USD
View
18 more retailers have this diamond
Prices start from £1,055 GBPSave up to £3,724 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
1.83ct Cushion
£1,055 GBP