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1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG792616784

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792616784

Diamond specifications and retailer prices

From $343 NZD
$193 USD
As of November 1, 2026
Save $1,648 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,991 NZD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792616784 or 792616784. Listed at 19 retailers as of November 1, 2026, with prices from $343 to $1,991, a $1,648 spread on the same certified stone. MOH London lists it at $1,991. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792616784
Dimensions7.34 × 7.29 × 4.55 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
7.34 mm7.29 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792616784
Side View
Table 56.0%Crown 33.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
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: $1,991 NZD|Low: $336 NZD|High: $2,056 NZD|Avg: $967 NZD|-1.8%
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 2, 2026
Retailer 5$343 NZD
Retailer 15$384 NZD
Retailer 14$398 NZD
Retailer 10$427 NZD
Retailer 6$428 NZD
Retailer 16$745 NZD
Retailer 9$775 NZD
Retailer 12$805 NZD
Retailer 13$1,017 NZD
Retailer 2$1,116 NZD
Retailer 7$1,271 NZD
Retailer 11$1,370 NZD
Retailer 3$1,385 NZD
Retailer 4$1,465 NZD
Retailer 8$1,528 NZD
MOH London$1,991 NZD

37 data points across 16 retailers

19 retailers$343 NZD to $1,991 NZD

Retailer 1
-
$343 NZD
$193 USD
Price last confirmed 45 days ago
A
Retailer 2
-
$343 NZD
$193 USD
View
A
Retailer 3
-
$384 NZD
$216 USD
View
Final sale: no returns
A
Retailer 4
-
$398 NZD
$224 USD
View
Retailer 5
-
$418 NZD
$235 USD
View
Price last confirmed 44 days ago
A
Retailer 6
-
$427 NZD
$240 USD
View
Retailer 7
-
$428 NZD
$241 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$745 NZD
$419 USD
View
A
Retailer 9
-
$775 NZD
£343 GBP
View
A
Retailer 10
-
$805 NZD
$453 USD
View
B+
Retailer 11
-
$1,017 NZD
$572 USD
View
B+
Retailer 12
-
$1,116 NZD
$628 USD
View
Retailer 13
-
$1,271 NZD
$715 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$1,361 NZD
$766 USD
View
Price last confirmed 42 days ago
B
Retailer 15
-
$1,370 NZD
$771 USD
View
B+
Retailer 16
-
$1,385 NZD
SGD 1,053 SGD
View
B+
Retailer 17
-
$1,465 NZD
$824 USD
View
B
Retailer 18
-
$1,528 NZD
$860 USD
View
Most Expensive
B
MOH London
LG792616784 · Nov 2
$1,991 NZD
£882 GBP
View
18 more retailers have this diamond
Prices start from $343 NZDSave up to $1,648 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
$343 NZD