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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 $2,074 AUD
$1,457 USD
As of October 31, 2026
Save $8,015 AUD (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,432 AUD 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

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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 31
Current: $4,073 AUD|Low: $2,074 AUD|High: $9,332 AUD|Avg: $5,370 AUD|-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$2,074 AUD
Retailer 4$2,511 AUD
Retailer 13$2,602 AUD
Retailer 12$2,847 AUD
Retailer 10$3,659 AUD
Retailer 1$4,073 AUD
Retailer 11$5,182 AUD
Retailer 8$5,281 AUD
Retailer 5$5,945 AUD
Retailer 15$7,013 AUD
Retailer 3$7,057 AUD
Retailer 6$7,103 AUD
Retailer 9$8,248 AUD
Retailer 14$8,556 AUD
Retailer 2$9,332 AUD

42 data points across 15 retailers

18 retailers$2,074 AUD to $10,089 AUD

A
Cheapest Retailer
-
$2,074 AUD
$1,457 USD
A
Retailer 2
-
$2,511 AUD
$1,764 USD
View
Final sale: no returns
Retailer 3
-
$2,602 AUD
$1,828 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
$2,847 AUD
$2,000 USD
View
B+
Retailer 5
-
$3,659 AUD
$2,570 USD
View
B+
Retailer 6
-
$4,073 AUD
£2,253 GBP
View
Retailer 7
-
$5,182 AUD
$3,640 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$5,281 AUD
ZAR 59,927 ZAR
View
B
Retailer 9
-
$5,945 AUD
£3,288 GBP
View
B
Retailer 10
-
$7,013 AUD
$4,926 USD
View
B
Retailer 11
-
$7,057 AUD
$4,957 USD
View
B
Retailer 12
-
$7,103 AUD
$4,990 USD
View
B
Retailer 13
-
$7,860 AUD
$5,521 USD
View
B
Retailer 14
-
$8,248 AUD
£4,562 GBP
View
B
Retailer 15
-
$8,556 AUD
$6,010 USD
View
B
Retailer 16
-
$9,332 AUD
$6,555 USD
View
B
Retailer 17
-
$10,089 AUD
$7,087 USD
View
Most Expensive
Do Amore Diamonds
27-3BA7C789F · Oct 31
$15,432 AUD
$10,840 USD
View
Price under review
17 more retailers have this diamond
Prices start from $2,074 AUDSave up to $8,015 AUD

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
$2,074 AUD