Cushion|Lab Grown|IGI

1.87ct D VS1 Cushion Lab Grown Diamond

VG • D/VS1 • IGI LG831617193

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

Certificate IGI LG831617193

Diamond specifications and retailer prices

From £231 GBP
$309 USD
As of October 30, 2026
Save £842 GBP (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,086 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.87ct lab-grown cushion diamond

This 1.87ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831617193 or 831617193. Listed at 14 retailers as of October 30, 2026, with a 365% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.87
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831617193
Dimensions7.19 × 7.08 × 4.80 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.19 mm7.08 mm1.87 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831617193
Side View
Table 62.0%Crown 35.5°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 67.8%

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 30
Current: £1,086 GBP|Low: £222 GBP|High: £1,101 GBP|Avg: £625 GBP|-1.4%
Rare Carat
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
October 31, 2026
Retailer 4£231 GBP
Retailer 11£286 GBP
Retailer 12£399 GBP
Retailer 5£422 GBP
Retailer 7£433 GBP
Retailer 10£440 GBP
Retailer 2£450 GBP
Retailer 14£572 GBP
Retailer 9£595 GBP
Retailer 3£860 GBP
Retailer 13£984 GBP
Retailer 8£1,030 GBP
Retailer 6£1,073 GBP
Rare Carat£1,086 GBP

38 data points across 14 retailers

14 retailers£231 GBP to £1,073 GBP

A
Cheapest Retailer
-
£231 GBP
$309 USD
Final sale: no returns
Retailer 2
-
£286 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
£399 GBP
$535 USD
View
A
Retailer 4
-
£422 GBP
$566 USD
View
A
Retailer 5
-
£433 GBP
€552 EUR
View
A
Retailer 6
-
£440 GBP
ZAR 9,514 ZAR
View
A
Retailer 7
-
£450 GBP
View
B+
Retailer 8
-
£572 GBP
$766 USD
View
B+
Retailer 9
-
£595 GBP
A$1,226 AUD
View
B
Retailer 10
-
£860 GBP
$1,153 USD
View
B
Retailer 11
-
£984 GBP
$1,319 USD
View
B
Retailer 12
-
£1,030 GBP
View
B
Retailer 13
-
£1,073 GBP
$1,438 USD
View
Most Expensive
Rare Carat
1009775 · Oct 21
£1,086 GBP
$1,455 USD
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from £231 GBPSave up to £842 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
1.87ct Cushion
£231 GBP