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Oval|Lab Grown|IGI

1.51ct D SI2 Oval Lab Grown Diamond

D/SI2 • IGI LG691580333

Certificate IGI LG691580333

Diamond specifications and retailer prices

From $1,220 USD
As of October 30, 2026
Save $50 USD (4%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,270 USD at Kay Jewelers · As of October 30, 2026
View at Kay Jewelers

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included) and certified by IGI LG691580333 or 691580333. Listed at 3 retailers as of October 30, 2026, with a relatively tight 4% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.51
Carat
D
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG691580333
Dimensions9.34 × 6.46 mm
L/W Ratio1.45
Top View
9.34 mm6.46 mm1.51 ctD / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691580333
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $1,270 USD|Low: $1,220 USD|High: $1,860 USD|Avg: $1,540 USD|-26.2%
Kay Jewelers
Retailer 2
Retailer 3
October 2, 2026
Retailer 2$1,220 USD
Kay Jewelers$1,270 USD
Retailer 3$1,270 USD

9 data points across 3 retailers

3 retailers$1,220 USD to $1,270 USD

B
Cheapest Retailer
-
$1,220 USD
B
Retailer 2
-
$1,270 USD
View
Most Expensive
B
Kay Jewelers
254642456 · Oct 30
$1,270 USD
View
2 more retailers have this diamond
Prices start from $1,220 USDSave up to $50 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.

B
1.51ct Oval
$1,220 USD