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Round|Lab Grown|IGI

1.51ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG770653207

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770653207

Diamond specifications and retailer prices

From $280 AUD
$197 USD
As of November 1, 2026
Save $1,343 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,624 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770653207 or 770653207. Listed at 14 retailers as of November 1, 2026, with prices from $280 to $1,624, a $1,343 spread on the same certified stone. MOH London lists it at $1,624. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770653207
Dimensions7.48 × 7.47 × 4.38 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.47 mm1.51 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770653207
Side View
Table 63.0%Crown 32.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 58.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,624 AUD|Low: $269 AUD|High: $1,643 AUD|Avg: $826 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 10$280 AUD
Retailer 3$313 AUD
Retailer 15$325 AUD
Retailer 4$347 AUD
Retailer 12$347 AUD
Retailer 13$604 AUD
Retailer 2$638 AUD
Retailer 5$816 AUD
Retailer 14$820 AUD
Retailer 11$1,110 AUD
Retailer 16$1,116 AUD
Retailer 9$1,120 AUD
Retailer 6$1,134 AUD
Retailer 8$1,270 AUD
Retailer 7$1,491 AUD
MOH London$1,624 AUD

19 data points across 16 retailers

14 retailers$280 AUD to $1,624 AUD

A
Cheapest Retailer
-
$280 AUD
$197 USD
A
Retailer 2
-
$313 AUD
$220 USD
View
Final sale: no returns
A
Retailer 3
-
$325 AUD
$228 USD
View
Retailer 4
-
$347 AUD
$244 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$347 AUD
$244 USD
View
B+
Retailer 6
-
$604 AUD
$424 USD
View
A
Retailer 7
-
$638 AUD
€427 EUR
View
A
Retailer 8
-
$816 AUD
$573 USD
View
A
Retailer 9
-
$820 AUD
$576 USD
View
A
Retailer 10
-
$1,110 AUD
$780 USD
View
A
Retailer 11
-
$1,116 AUD
$784 USD
View
A
Retailer 12
-
$1,120 AUD
$787 USD
View
A
Retailer 13
-
$1,134 AUD
SGD 1,076 SGD
View
Most Expensive
A
MOH London
LG770653207 · Nov 1
$1,624 AUD
£898 GBP
View
13 more retailers have this diamond
Prices start from $280 AUDSave up to $1,343 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
$280 AUD