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1.30ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG445036875

Shape and cutting style on the report: Round brilliant

Certificate IGI LG445036875

Diamond specifications and retailer prices

From $1,331 NZD
$750 USD
As of November 2, 2026
Save $4,765 NZD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,095 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG445036875 or 445036875. Listed at 11 retailers as of November 2, 2026, with prices from $1,331 to $6,095, a $4,765 spread on the same certified stone. MOH London lists it at $6,095. 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

1.30
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445036875
Dimensions7.10 × 7.13 × 4.22 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.10 mm7.13 mm1.30 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445036875
Side View
Table 57.5%Crown 32°Girdle: UNDPavilion 40.2°Culet: NoneDepth 59.2%

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 2
Current: $6,095 NZD|Low: $1,331 NZD|High: $6,179 NZD|Avg: $2,759 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,331 NZD
Retailer 5$1,338 NZD
Retailer 8$1,498 NZD
Retailer 6$1,553 NZD
Retailer 4$1,863 NZD
Retailer 9$2,438 NZD
Retailer 7$2,511 NZD
Retailer 3$3,692 NZD
Retailer 10$4,444 NZD
MOH London$6,095 NZD

18 data points across 10 retailers

11 retailers$1,331 NZD to $6,095 NZD

A
Cheapest Retailer
-
$1,331 NZD
$750 USD
A
Retailer 2
-
$1,338 NZD
$754 USD
View
A
Retailer 3
-
$1,457 NZD
$821 USD
View
B+
Retailer 4
-
$1,498 NZD
$844 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,553 NZD
$875 USD
View
Retailer 6
-
$1,553 NZD
$875 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$1,863 NZD
$1,050 USD
View
B
Retailer 8
-
$2,511 NZD
$1,415 USD
View
B
Retailer 9
-
$3,692 NZD
$2,081 USD
View
B
Retailer 10
-
$4,365 NZD
$2,460 USD
View
Most Expensive
B
MOH London
LG445036875 · Nov 1
$6,095 NZD
£2,705 GBP
View
10 more retailers have this diamond
Prices start from $1,331 NZDSave up to $4,765 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
1.30ct Round
$1,331 NZD