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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG833698580

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG833698580

Diamond specifications and retailer prices

From $128 USD
HK$1,000 HKD
As of October 30, 2026
Save $648 USD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $776 USD at MOH London · As of October 25, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG833698580 or 833698580. Listed at 9 retailers as of October 25, 2026, with prices from $128 to $776, a $648 spread on the same certified stone. MOH London lists it at $776. 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

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle40°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833698580
Dimensions6.36 × 4.45 × 2.79 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.36 mm4.45 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG833698580
Side View
Table 61.0%Crown 40°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
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: $776 USD|Low: $94 USD|High: $784 USD|Avg: $262 USD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 25, 2026
Retailer 10$95 USD
Retailer 3$128 USD
Retailer 6$175 USD
Retailer 2$180 USD
Retailer 7$202 USD
Retailer 5$224 USD
Retailer 8$226 USD
Retailer 9$270 USD
Retailer 4$280 USD
Retailer 11$305 USD
MOH London$776 USD

31 data points across 11 retailers

9 retailers$128 USD to $776 USD

A
Cheapest Retailer
-
$128 USD
HK$1,000 HKD
Retailer 2
-
$175 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$180 USD
£142 GBP
View
B+
Retailer 4
-
$224 USD
View
Retailer 5
-
$226 USD
View
Price last confirmed 12 days ago
Retailer 6
-
$270 USD
£212 GBP
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$280 USD
View
B+
Retailer 8
-
$305 USD
SGD 412 SGD
View
Most Expensive
B
MOH London
LG833698580 · Oct 25
$776 USD
£611 GBP
View
8 more retailers have this diamond
Prices start from $128 USDSave up to $648 USD

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
0.51ct Oval
$128 USD