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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 $361 SGD
$282 USD
As of October 30, 2026
Save $522 SGD (59%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,044 SGD 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 8 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: $1,044 SGD|Low: $361 SGD|High: $1,099 SGD|Avg: $595 SGD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4$361 SGD
Retailer 2$380 SGD
Retailer 6$393 SGD
Retailer 7$414 SGD
Retailer 5$422 SGD
Retailer 8$630 SGD
Retailer 9$785 SGD
Retailer 3$882 SGD
MOH London$1,044 SGD

39 data points across 9 retailers

8 retailers$361 SGD to $882 SGD

A
Cheapest Retailer
-
$361 SGD
$282 USD
A
Retailer 2
-
$380 SGD
£234 GBP
View
B+
Retailer 3
-
$414 SGD
$324 USD
View
B+
Retailer 4
-
$422 SGD
£260 GBP
View
B+
Retailer 5
-
$630 SGD
$493 USD
View
B
Retailer 6
-
$785 SGD
$614 USD
View
B
Retailer 7
-
$882 SGD
$690 USD
View
Most Expensive
MOH London
LG831639554 · Oct 18
$1,044 SGD
£643 GBP
View
Price last confirmed 13 days ago
7 more retailers have this diamond
Prices start from $361 SGDSave up to $522 SGD

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
$361 SGD