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Oval|Lab Grown|IGI

1.68ct D SI2 Oval Lab Grown Diamond

D/SI2 • IGI LG691580431

Certificate IGI LG691580431

Diamond specifications and retailer prices

From $1,270 USD
As of October 30, 2026
Save $270 USD (18%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,540 USD at Kay Jewelers · As of October 28, 2026
View at Kay Jewelers

About this 1.68ct lab-grown oval diamond

This 1.68ct 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 LG691580431 or 691580431. Listed at 3 retailers as of October 28, 2026, with prices from $1,270 to $1,540, a $270 spread on the same certified stone. Kay Jewelers lists it at $1,540. 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

1.68
Carat
D
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG691580431
Dimensions9.42 × 6.69 mm
L/W Ratio1.41
Top View
9.42 mm6.69 mm1.68 ctD / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691580431
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.7%

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: $1,540 USD|Low: $1,270 USD|High: $2,110 USD|Avg: $1,804 USD|-21.4%
Kay Jewelers
Retailer 2
Retailer 3
September 28, 2026
Retailer 2$1,270 USD
Kay Jewelers$1,540 USD
Retailer 3$1,540 USD

6 data points across 3 retailers

3 retailers$1,270 USD to $1,540 USD

B
Cheapest Retailer
-
$1,270 USD
C
Retailer 2
-
$1,540 USD
View
Most Expensive
C
Kay Jewelers
254651219 · Oct 28
$1,540 USD
View
2 more retailers have this diamond
Prices start from $1,270 USDSave up to $270 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
1.68ct Oval
$1,270 USD