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1.01ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • IGI LG301781220

Shape and cutting style on the report: Round brilliant

Certificate IGI LG301781220

Diamond specifications and retailer prices

From $456 SGD
€340 EUR
As of October 31, 2026
Save $502 SGD (52%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $959 SGD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.01ct lab-grown round diamond

This 1.01ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG301781220 or 301781220. Listed at 2 retailers as of October 31, 2026, with prices from $456 to $959, a $502 spread on the same certified stone. Brilliant Earth lists it at $959. 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

1.01
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG301781220
Dimensions6.51 × 6.54 × 3.89 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeMedium
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
6.51 mm6.54 mm1.01 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG301781220
Side View
Table 60.5%Crown 32.4°GirdlePavilion 40.8°Culet: MediumDepth 59.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $959 SGD|Low: $350 SGD|High: $34,467 SGD|Avg: $5,075 SGD|-2.6%
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$371 SGD
Retailer 2$456 SGD
Brilliant Earth$959 SGD

15 data points across 3 retailers

2 retailers$456 SGD to $959 SGD

B+
Cheapest Retailer
-
$456 SGD
€340 EUR
Most Expensive
C
Brilliant Earth
16335408A · Nov 1
$959 SGD
$750 USD
View
1 more retailer has this diamond
Prices start from $456 SGDSave up to $502 SGD

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+
1.01ct Round
$456 SGD