CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG816614263

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816614263

Diamond specifications and retailer prices

From $293 AUD
As of November 5, 2026
Save $1,406 AUD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,699 AUD at MOH London · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816614263 or 816614263. Listed at 15 retailers as of November 2, 2026, with prices from $293 to $1,699, a $1,406 spread on the same certified stone. MOH London lists it at $1,699. 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

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816614263
Dimensions7.41 × 7.35 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm7.35 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816614263
Side View
Table 60.0%Crown 35.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

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 5
Current: $1,699 AUD|Low: $293 AUD|High: $1,719 AUD|Avg: $921 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$293 AUD
Retailer 8$364 AUD
Retailer 9$630 AUD
Retailer 4$658 AUD
Retailer 3$661 AUD
Retailer 6$1,048 AUD
Retailer 5$1,172 AUD
Retailer 2$1,470 AUD
MOH London$1,699 AUD

43 data points across 9 retailers

15 retailers$293 AUD to $1,699 AUD

A
Cheapest Retailer
-
$293 AUD
A
Retailer 2
-
$339 AUD
View
A
Retailer 3
-
$364 AUD
View
Retailer 4
-
$364 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$621 AUD
View
B+
Retailer 6
-
$630 AUD
View
A
Retailer 7
-
$658 AUD
View
A
Retailer 8
-
$661 AUD
View
B+
Retailer 9
-
$1,048 AUD
View
B+
Retailer 10
-
$1,167 AUD
View
B
Retailer 11
-
$1,172 AUD
View
B
Retailer 12
-
$1,244 AUD
View
B
Retailer 13
-
$1,354 AUD
View
B
Retailer 14
-
$1,470 AUD
View
Most Expensive
B
MOH London
LG816614263 · Nov 2
$1,699 AUD
£919 GBP
View
14 more retailers have this diamond
Prices start from $293 AUDSave up to $1,406 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
$293 AUD