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Oval|Lab Grown|IGI

1.15ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG508138207

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508138207

Diamond specifications and retailer prices

From $637 NZD
As of November 6, 2026
Save $1,068 NZD (63%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,704 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.15ct lab-grown oval diamond

This 1.15ct lab-grown oval sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG508138207 or 508138207. Listed at 5 retailers as of November 4, 2026, with prices from $637 to $1,704, a $1,068 spread on the same certified stone. MOH London lists it at $1,704. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.15
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508138207
Dimensions8.40 × 5.97 × 3.78 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.40 mm5.97 mm1.15 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508138207
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,704 NZD|Low: $599 NZD|High: $2,096 NZD|Avg: $1,007 NZD|-17.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$637 NZD
Retailer 5$660 NZD
Retailer 4$723 NZD
Retailer 3$812 NZD
MOH London$1,704 NZD

43 data points across 5 retailers

5 retailers$637 NZD to $1,704 NZD

A
Cheapest Retailer
-
$637 NZD
B+
Retailer 2
-
$660 NZD
View
B+
Retailer 3
-
$723 NZD
View
B+
Retailer 4
-
$812 NZD
View
Most Expensive
B
MOH London
LG508138207 · Nov 4
$1,704 NZD
£744 GBP
View
4 more retailers have this diamond
Prices start from $637 NZDSave up to $1,068 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
1.15ct Oval
$637 NZD