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Oval|Lab Grown|IGI

1.00ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG450028009

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG450028009

Diamond specifications and retailer prices

From $1,029 NZD
$580 USD
As of October 31, 2026
Save $3,380 NZD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,947 NZD at MOH London · As of October 25, 2026
View at MOH London

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG450028009 or 450028009. Listed at 11 retailers as of October 31, 2026, with a 328% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450028009
Dimensions7.54 × 5.70 × 3.65 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD). Type IIa
Top View
7.54 mm5.70 mm1.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450028009
Side View
Table 55.0%Crown 35.7°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 64.0%

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: Oct 31
Current: $6,947 NZD|Low: $1,029 NZD|High: $7,021 NZD|Avg: $3,453 NZD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2$1,029 NZD
Retailer 4$1,764 NZD
Retailer 6$1,975 NZD
Retailer 7$2,360 NZD
Retailer 8$2,945 NZD
Retailer 5$3,268 NZD
Retailer 3$4,409 NZD
Retailer 9$5,859 NZD
MOH London$6,947 NZD

11 data points across 9 retailers

11 retailers$1,029 NZD to $4,409 NZD

A
Cheapest Retailer
-
$1,029 NZD
$580 USD
B+
Retailer 2
-
$1,764 NZD
$994 USD
View
B+
Retailer 3
-
$1,918 NZD
$1,081 USD
View
B+
Retailer 4
-
$1,975 NZD
$1,113 USD
View
Final sale: no returns
Retailer 5
-
$2,046 NZD
$1,153 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$2,046 NZD
$1,153 USD
View
B
Retailer 7
-
$2,360 NZD
$1,330 USD
View
B
Retailer 8
-
$3,268 NZD
$1,842 USD
View
B
Retailer 9
-
$3,834 NZD
$2,161 USD
View
B
Retailer 10
-
$4,409 NZD
$2,485 USD
View
Most Expensive
MOH London
LG450028009 · Oct 25
$6,947 NZD
£3,083 GBP
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from $1,029 NZDSave up to $3,380 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
1.00ct Oval
$1,029 NZD