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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 $350 NZD
$197 USD
As of November 1, 2026
Save $1,674 NZD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,024 NZD 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 $350 to $2,024, a $1,674 spread on the same certified stone. MOH London lists it at $2,024. 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: $2,024 NZD|Low: $335 NZD|High: $2,048 NZD|Avg: $1,029 NZD
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$350 NZD
Retailer 3$390 NZD
Retailer 15$405 NZD
Retailer 4$433 NZD
Retailer 12$433 NZD
Retailer 13$752 NZD
Retailer 2$796 NZD
Retailer 5$1,017 NZD
Retailer 14$1,022 NZD
Retailer 11$1,384 NZD
Retailer 16$1,391 NZD
Retailer 9$1,396 NZD
Retailer 6$1,413 NZD
Retailer 8$1,582 NZD
Retailer 7$1,859 NZD
MOH London$2,024 NZD

19 data points across 16 retailers

14 retailers$350 NZD to $2,024 NZD

A
Cheapest Retailer
-
$350 NZD
$197 USD
A
Retailer 2
-
$390 NZD
$220 USD
View
Final sale: no returns
A
Retailer 3
-
$405 NZD
$228 USD
View
Retailer 4
-
$433 NZD
$244 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$433 NZD
$244 USD
View
B+
Retailer 6
-
$752 NZD
$424 USD
View
A
Retailer 7
-
$796 NZD
€427 EUR
View
A
Retailer 8
-
$1,017 NZD
$573 USD
View
A
Retailer 9
-
$1,022 NZD
$576 USD
View
A
Retailer 10
-
$1,384 NZD
$780 USD
View
A
Retailer 11
-
$1,391 NZD
$784 USD
View
A
Retailer 12
-
$1,396 NZD
$787 USD
View
A
Retailer 13
-
$1,413 NZD
SGD 1,076 SGD
View
Most Expensive
A
MOH London
LG770653207 · Nov 1
$2,024 NZD
£898 GBP
View
13 more retailers have this diamond
Prices start from $350 NZDSave up to $1,674 NZD

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
$350 NZD