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Heart|Lab Grown|IGI

1.25ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG770664488

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG770664488

Diamond specifications and retailer prices

From $295 AUD
As of November 4, 2026
Save $1,357 AUD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,653 AUD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.25ct lab-grown heart diamond

This 1.25ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770664488 or 770664488. Listed at 13 retailers as of November 4, 2026, with prices from $295 to $1,653, a $1,357 spread on the same certified stone. Reve Diamonds lists it at $1,653. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.25
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770664488
Dimensions6.71 × 7.46 × 4.29 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.71 mm7.46 mm1.25 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770664488
Side View
Table 60.0%Crown 33.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 57.5%

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: Nov 4
Current: $585 AUD|Low: $175 AUD|High: $1,675 AUD|Avg: $891 AUD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 5, 2026
Retailer 2$175 AUD
Retailer 9$295 AUD
Retailer 6$578 AUD
Retailer 1$585 AUD
Retailer 8$616 AUD
Retailer 7$799 AUD
Retailer 4$1,113 AUD
Retailer 10$1,132 AUD
Retailer 5$1,208 AUD
Retailer 3$1,530 AUD
Reve Diamonds$1,653 AUD

32 data points across 11 retailers

13 retailers$295 AUD to $1,653 AUD

A
Cheapest Retailer
-
$295 AUD
Final sale: no returns
Retailer 2
-
$314 AUD
View
Price last confirmed 38 days ago
Retailer 3
-
$332 AUD
View
Price last confirmed 40 days ago
B+
Retailer 4
-
$578 AUD
View
B+
Retailer 5
-
$585 AUD
View
B+
Retailer 6
-
$616 AUD
View
B+
Retailer 7
-
$799 AUD
View
B
Retailer 8
-
$947 AUD
View
B
Retailer 9
-
$1,113 AUD
View
B
Retailer 10
-
$1,132 AUD
View
B
Retailer 11
-
$1,208 AUD
View
B
Retailer 12
-
$1,530 AUD
View
Most Expensive
B
Reve Diamonds
FA2468553 · Nov 4
$1,653 AUD
$1,136 USD
View
12 more retailers have this diamond
Prices start from $295 AUDSave up to $1,357 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
1.25ct Heart
$295 AUD