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Oval|Lab Grown|IGI

1.00ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG508156211

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508156211

Diamond specifications and retailer prices

From $1,086 NZD
As of November 5, 2026
Save $2,253 NZD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,539 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508156211 or 508156211. Listed at 12 retailers as of November 4, 2026, with a 207% 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle41.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508156211
Dimensions7.89 × 5.45 × 3.42 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.89 mm5.45 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG508156211
Side View
Table 59.5%Crown 41.3°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,084 NZD|Low: $1,086 NZD|High: $5,911 NZD|Avg: $2,339 NZD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$1,086 NZD
Retailer 8$1,214 NZD
Retailer 3$1,515 NZD
Retailer 4$1,578 NZD
Retailer 7$2,064 NZD
Retailer 1$2,084 NZD
Retailer 5$3,339 NZD
Retailer 2$5,825 NZD

42 data points across 8 retailers

12 retailers$1,086 NZD to $3,339 NZD

B+
Cheapest Retailer
-
$1,086 NZD
B+
Retailer 2
-
$1,214 NZD
View
Final sale: no returns
B+
Retailer 3
-
$1,216 NZD
View
Retailer 4
-
$1,346 NZD
View
Price last confirmed 21 days ago
B
Retailer 5
-
$1,346 NZD
View
B
Retailer 6
-
$1,515 NZD
View
B
Retailer 7
-
$1,578 NZD
View
B
Retailer 8
-
$2,064 NZD
View
B
Retailer 9
-
$2,084 NZD
View
B
Retailer 10
-
$3,339 NZD
View
Most Expensive
NZ Jewellers
e73373b2-4bad-45ae-a88d-4df4b7d2da15 · Nov 5
$3,539 NZD
$1,962 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,086 NZDSave up to $2,253 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.

B+
1.00ct Oval
$1,086 NZD