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Round|Lab Grown|IGI

0.51ct I SI1 Round Lab Grown Diamond

VG • I/SI1 • IGI LG300914

Certificate IGI LG300914

Diamond specifications and retailer prices

From $863 USD
SGD 1,166 SGD
As of October 31, 2026
Save $13 USD (1%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $875 USD at Fonder Diamond · As of October 31, 2026
View at Fonder Diamond

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG300914 or 300914. Listed at 2 retailers as of October 31, 2026, with a relatively tight 1% 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

0.51
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG300914
Dimensions5.07 × 5.10 mm
L/W Ratio1.01
Top View
5.07 mm5.10 mm0.51 ctI / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG300914
Side View
Table 56.0%CrownGirdle: THN - STKPavilionCulet: NDepth 62.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $875 USD|Low: $418 USD|High: $1,104 USD|Avg: $737 USD|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 13, 2026
Retailer 6$418 USD
Retailer 3$515 USD
Retailer 2$570 USD
Fonder Diamond$875 USD
Retailer 5$936 USD
Retailer 4$1,104 USD

4 data points across 6 retailers

2 retailers$863 USD to $875 USD

B
Cheapest Retailer
-
$863 USD
SGD 1,166 SGD
Most Expensive
B
Fonder Diamond
97043650 · Oct 31
$875 USD
SGD 1,183 SGD
View
1 more retailer has this diamond
Prices start from $863 USDSave up to $13 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
0.51ct Round
$863 USD