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Oval|Lab Grown|IGI

0.99ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG831639554

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG831639554

Diamond specifications and retailer prices

From $500 NZD
$282 USD
As of October 30, 2026
Save $724 NZD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,449 NZD at MOH London · As of October 18, 2026
View at MOH London

About this 0.99ct lab-grown oval diamond

This 0.99ct lab-grown oval sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG831639554 or 831639554. Listed at 9 retailers as of October 30, 2026, with a 145% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.99
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831639554
Dimensions7.83 × 5.55 × 3.58 mm
L/W Ratio1.41
Girdle conditionFaceted
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
7.83 mm5.55 mm0.99 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831639554
Side View
Table 61.0%Crown 33.5°Girdle: STK-THKPavilion 41.6°Culet: NoneDepth 64.5%

Caratlytics Score

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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: Oct 30
Current: $1,449 NZD|Low: $500 NZD|High: $1,526 NZD|Avg: $825 NZD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5$500 NZD
Retailer 3$527 NZD
Retailer 2$548 NZD
Retailer 7$575 NZD
Retailer 6$586 NZD
Retailer 8$875 NZD
Retailer 9$1,090 NZD
Retailer 4$1,224 NZD
MOH London$1,449 NZD

39 data points across 9 retailers

9 retailers$500 NZD to $1,224 NZD

A
Cheapest Retailer
-
$500 NZD
$282 USD
A
Retailer 2
-
$527 NZD
£234 GBP
View
A
Retailer 3
-
$548 NZD
€294 EUR
View
B+
Retailer 4
-
$575 NZD
$324 USD
View
B+
Retailer 5
-
$586 NZD
£260 GBP
View
B+
Retailer 6
-
$875 NZD
$493 USD
View
B
Retailer 7
-
$1,090 NZD
$614 USD
View
B
Retailer 8
-
$1,224 NZD
$690 USD
View
Most Expensive
MOH London
LG831639554 · Oct 18
$1,449 NZD
£643 GBP
View
Price last confirmed 13 days ago
8 more retailers have this diamond
Prices start from $500 NZDSave up to $724 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
0.99ct Oval
$500 NZD