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Round|Lab Grown|IGI

1.51ct J SI2 Round Lab Grown Diamond

EX • J/SI2

Diamond specifications and retailer prices

From $6,662 SGD
$5,211 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $6,662 SGD at Blue Nile
View at Blue Nile

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 2 retailers as of October 31, 2026. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.29 × 7.33 × 4.60 mm
L/W Ratio1.01
Top View
7.29 mm7.33 mm1.51 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 31
Current: $6,662 SGD|Low: $5,157 SGD|High: $6,860 SGD|Avg: $5,947 SGD|-2.9%
Blue Nile
Retailer 2
October 20, 2026
Retailer 2$5,157 SGD
Blue Nile$6,662 SGD

6 data points across 2 retailers

2 retailers

Retailer 1
-
$5,157 SGD
$4,034 USD
Price last confirmed 11 days ago
Most Expensive
C
Blue Nile
28057949 · Oct 31
$6,662 SGD
$5,211 USD
View
1 more retailer has this diamond

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.

C
1.51ct Round
$6,662 SGD