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Round|Natural|GIA

1.20ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6405211720

Certificate GIA 6405211720

Diamond specifications and retailer prices

From $2,098 USD
As of November 5, 2026
Save $820 USD (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,918 USD at B2C Jewels · As of November 4, 2026
View at B2C Jewels

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6405211720. Listed at 4 retailers as of November 4, 2026, with prices from $2,098 to $2,918, a $820 spread on the same certified stone. B2C Jewels lists it at $2,918. 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

1.20
Carat
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6405211720
Dimensions6.78 × 6.81 × 4.23 mm
L/W Ratio1.00
Star length50%
Top View
6.78 mm6.81 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6405211720
Side View
Table 56.0%Crown 36.5°Girdle: MED-MEDPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $2,918 USD|Low: $2,098 USD|High: $3,334 USD|Avg: $2,756 USD|+5.0%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 3$2,098 USD
Retailer 2$2,222 USD
B2C Jewels$2,918 USD
Retailer 4$3,334 USD

43 data points across 4 retailers

4 retailers$2,098 USD to $2,918 USD

A
Cheapest Retailer
-
$2,098 USD
A
Retailer 2
-
$2,222 USD
View
Final sale: no returns
A
Retailer 3
-
$2,709 USD
View
Most Expensive
A
B2C Jewels
30815270 · Nov 4
$2,918 USD
View
3 more retailers have this diamond
Prices start from $2,098 USDSave up to $820 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.

A
1.20ct Round
$2,098 USD