CaratHunter
Plans
Round|Lab Grown|GIA

1.18ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • GIA 1477656963

Certificate GIA 1477656963

Diamond specifications and retailer prices

From $450 USD
As of November 4, 2026
Save $540 USD (55%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $990 USD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.18ct lab-grown round diamond

This 1.18ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1477656963. Listed at 2 retailers as of November 4, 2026, with prices from $450 to $990, a $540 spread on the same certified stone. Brilliant Earth lists it at $990. 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

1.18
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabGIA
CertificateGIA 1477656963
Dimensions6.89 × 6.87 × 4.16 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Girdle conditionFaceted
Cert comments
This is a man-made diamond produced by CVD (Chemical Vapor Deposition) growth process and has evidence of post-growth treatments to change the color.
Key to symbols
Growth Remnant
Top View
6.89 mm6.87 mm1.18 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1477656963
Side View
Table 58.0%Crown 31.5°Girdle: MediumPavilion 41.4°Culet: NoneDepth 60.4%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $990 USD|Low: $450 USD|High: $1,040 USD|Avg: $736 USD|-4.8%
Brilliant Earth
Retailer 2
November 4, 2026
Retailer 2$450 USD
Brilliant Earth$990 USD

8 data points across 2 retailers

2 retailers$450 USD to $990 USD

B+
Cheapest Retailer
-
$450 USD
Most Expensive
B
Brilliant Earth
8191056A · Nov 5
$990 USD
View
1 more retailer has this diamond
Prices start from $450 USDSave up to $540 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+
1.18ct Round
$450 USD