CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct J I1 Round Lab Grown Diamond

EX • J/I1 • IGI LG788685687

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788685687

Diamond specifications and retailer prices

From $221 AUD
$155 USD
As of November 1, 2026
Save $1,233 AUD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,454 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG788685687 or 788685687. Listed at 11 retailers as of November 1, 2026, with prices from $221 to $1,454, a $1,233 spread on the same certified stone. MOH London lists it at $1,454. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
J
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788685687
Dimensions7.39 × 7.43 × 4.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.43 mm1.51 ctJ / I1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788685687
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.0%

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: Nov 1
Current: $1,454 AUD|Low: $214 AUD|High: $1,568 AUD|Avg: $559 AUD|-7.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4$221 AUD
Retailer 9$251 AUD
Retailer 8$290 AUD
Retailer 10$310 AUD
Retailer 6$312 AUD
Retailer 2$396 AUD
Retailer 5$528 AUD
Retailer 3$680 AUD
Retailer 11$780 AUD
Retailer 7$999 AUD
MOH London$1,454 AUD

27 data points across 11 retailers

11 retailers$221 AUD to $1,454 AUD

A
Cheapest Retailer
-
$221 AUD
$155 USD
A
Retailer 2
-
$251 AUD
$176 USD
View
A
Retailer 3
-
$290 AUD
$204 USD
View
Retailer 4
-
$310 AUD
$218 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$312 AUD
$219 USD
View
B
Retailer 6
-
$396 AUD
$278 USD
View
B+
Retailer 7
-
$528 AUD
€353 EUR
View
B+
Retailer 8
-
$680 AUD
$478 USD
View
B+
Retailer 9
-
$780 AUD
$548 USD
View
B+
Retailer 10
-
$999 AUD
$702 USD
View
Most Expensive
B
MOH London
LG788685687 · Nov 1
$1,454 AUD
£804 GBP
View
10 more retailers have this diamond
Prices start from $221 AUDSave up to $1,233 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
1.51ct Round
$221 AUD