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Heart|Lab Grown|IGI

1.80ct I SI1 Heart Lab Grown Diamond

VG • I/SI1 • IGI LG425067609

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG425067609

Diamond specifications and retailer prices

From $1,495 AUD
$1,050 USD
As of October 30, 2026
Save $3,301 AUD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,346 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 1.8ct lab-grown heart diamond

This 1.8ct lab-grown heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425067609 or 425067609. Listed at 11 retailers as of October 29, 2026, with a 221% 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

1.80
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.6°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067609
Dimensions8.71 × 7.28 × 4.81 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.71 mm7.28 mm1.80 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067609
Side View
Table 64.0%Crown 32.6°Girdle: STK-THKPavilion 40°Culet: NoneDepth 55.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $7,346 AUD|Low: $1,495 AUD|High: $7,405 AUD|Avg: $3,959 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2$1,495 AUD
Retailer 5$2,205 AUD
Retailer 8$2,470 AUD
Retailer 6$2,558 AUD
Retailer 9$2,804 AUD
Retailer 10$3,465 AUD
Retailer 3$3,607 AUD
Retailer 7$4,026 AUD
Retailer 4$4,524 AUD
Retailer 11$7,326 AUD
MOH London$7,346 AUD

13 data points across 11 retailers

11 retailers$1,495 AUD to $4,796 AUD

B+
Cheapest Retailer
-
$1,495 AUD
$1,050 USD
B
Retailer 2
-
$2,205 AUD
$1,549 USD
View
B
Retailer 3
-
$2,400 AUD
$1,686 USD
View
B
Retailer 4
-
$2,470 AUD
$1,735 USD
View
Final sale: no returns
B
Retailer 5
-
$2,558 AUD
$1,797 USD
View
Retailer 6
-
$2,558 AUD
$1,797 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
$2,804 AUD
$1,970 USD
View
B
Retailer 8
-
$4,026 AUD
$2,828 USD
View
B
Retailer 9
-
$4,524 AUD
$3,178 USD
View
B
Retailer 10
-
$4,796 AUD
$3,369 USD
View
Most Expensive
MOH London
LG425067609 · Oct 21
$7,346 AUD
£4,063 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from $1,495 AUDSave up to $3,301 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.

B+
1.80ct Heart
$1,495 AUD