Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG780619300

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780619300

Diamond specifications and retailer prices

From £1,087 GBP
$1,457 USD
As of October 31, 2026
Save £4,202 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £8,090 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG780619300 or 780619300. Listed at 18 retailers as of October 31, 2026, with a 386% 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

1.89
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780619300
Dimensions9.28 × 6.52 × 4.03 mm
L/W Ratio1.42
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
9.28 mm6.52 mm1.89 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780619300
Side View
Table 61.0%Crown 32.6°Girdle: THN-STKPavilion 33.6°Culet: NoneDepth 62.0%

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: £2,135 GBP|Low: £1,087 GBP|High: £4,892 GBP|Avg: £2,815 GBP|-0.5%
Retailer 1
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 7£1,087 GBP
Retailer 4£1,317 GBP
Retailer 13£1,364 GBP
Retailer 12£1,493 GBP
Retailer 10£1,918 GBP
Retailer 1£2,135 GBP
Retailer 11£2,717 GBP
Retailer 8£2,768 GBP
Retailer 5£3,116 GBP
Retailer 15£3,676 GBP
Retailer 3£3,700 GBP
Retailer 6£3,724 GBP
Retailer 9£4,324 GBP
Retailer 14£4,485 GBP
Retailer 2£4,892 GBP

42 data points across 15 retailers

18 retailers£1,087 GBP to £5,289 GBP

A
Cheapest Retailer
-
£1,087 GBP
$1,457 USD
A
Retailer 2
-
£1,317 GBP
$1,764 USD
View
Final sale: no returns
Retailer 3
-
£1,364 GBP
$1,828 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£1,493 GBP
$2,000 USD
View
B+
Retailer 5
-
£1,918 GBP
$2,570 USD
View
B+
Retailer 6
-
£2,135 GBP
View
Retailer 7
-
£2,717 GBP
$3,640 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
£2,768 GBP
ZAR 59,927 ZAR
View
B
Retailer 9
-
£3,116 GBP
View
B
Retailer 10
-
£3,676 GBP
$4,926 USD
View
B
Retailer 11
-
£3,700 GBP
$4,957 USD
View
B
Retailer 12
-
£3,724 GBP
$4,990 USD
View
B
Retailer 13
-
£4,121 GBP
$5,521 USD
View
B
Retailer 14
-
£4,324 GBP
View
B
Retailer 15
-
£4,485 GBP
$6,010 USD
View
B
Retailer 16
-
£4,892 GBP
$6,555 USD
View
B
Retailer 17
-
£5,289 GBP
$7,087 USD
View
Most Expensive
Do Amore Diamonds
27-3BA7C789F · Oct 31
£8,090 GBP
$10,840 USD
View
Price under review
17 more retailers have this diamond
Prices start from £1,087 GBPSave up to £4,202 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
1.89ct Cushion
£1,087 GBP