CaratHunter
Plans
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 $1,549 USD
As of October 27, 2026
Save $1,820 USD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,160 USD 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 27, 2026, with a 117% 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
Color
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
undefined
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 27
Current: $5,160 USD|Low: $1,487 USD|High: $5,202 USD|Avg: $2,791 USD|-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 18, 2026
Retailer 4$1,549 USD
Retailer 5$1,640 USD
Retailer 8$1,735 USD
Retailer 6$1,797 USD
Retailer 9$1,970 USD
Retailer 10$2,434 USD
Retailer 3$2,534 USD
Retailer 7$2,828 USD
Retailer 2$3,178 USD
Retailer 11$5,146 USD
MOH London$5,160 USD

12 data points across 11 retailers

11 retailers$1,549 USD to $3,369 USD

B+
Cheapest Retailer
-
$1,549 USD
B+
Retailer 2
-
$1,640 USD
View
B
Retailer 3
-
$1,686 USD
View
B
Retailer 4
-
$1,735 USD
View
Final sale: no returns
B
Retailer 5
-
$1,797 USD
View
B
Retailer 6
-
$1,797 USD
View
Price last confirmed 16 days ago
B
Retailer 7
-
$1,970 USD
View
B
Retailer 8
-
$2,828 USD
View
B
Retailer 9
-
$3,178 USD
View
B
Retailer 10
-
$3,369 USD
View
Most Expensive
B
MOH London
LG425067609 · Oct 21
$5,160 USD
£4,063 GBP
View
Price last confirmed 8 days ago
10 more retailers have this diamond
Prices start from $1,549 USDSave up to $1,820 USD

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
$1,549 USD