Round|Natural|GIA

1.20ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6551079188

Certificate GIA 6551079188

Diamond specifications and retailer prices

From $2,406 USD
As of November 4, 2026
Save $2,874 USD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,090 USD at Queensmith · As of October 28, 2026
View at Queensmith

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 6551079188. Listed at 20 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551079188
Dimensions6.75 × 6.77 × 4.25 mm
L/W Ratio1.00
Top View
6.75 mm6.77 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551079188
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,090 USD|Low: $2,406 USD|High: $6,115 USD|Avg: $3,712 USD|+2.8%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$2,406 USD
Retailer 6$2,514 USD
Retailer 7$2,810 USD
Retailer 10$2,898 USD
Retailer 3$2,922 USD
Retailer 4$3,256 USD
Retailer 11$3,309 USD
Retailer 2$3,352 USD
Retailer 5$3,678 USD
Retailer 8$5,280 USD
Queensmith$6,090 USD

33 data points across 11 retailers

20 retailers$2,406 USD to $5,280 USD

A
Cheapest Retailer
-
$2,406 USD
A
Retailer 2
-
$2,514 USD
View
A
Retailer 3
-
$2,810 USD
View
A
Retailer 4
-
$2,898 USD
View
A
Retailer 5
-
$2,922 USD
View
Final sale: no returns
A
Retailer 6
-
$2,958 USD
View
Retailer 7
-
$3,199 USD
View
Price last confirmed 44 days ago
Retailer 8
-
$3,199 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$3,199 USD
View
Price last confirmed 21 days ago
A
Retailer 10
-
$3,256 USD
View
A
Retailer 11
-
$3,309 USD
View
Retailer 12
-
$3,322 USD
View
Price last confirmed 22 days ago
A
Retailer 13
-
$3,352 USD
View
A
Retailer 14
-
$3,678 USD
View
Retailer 15
-
$3,691 USD
View
Price last confirmed 45 days ago
Retailer 16
-
$3,691 USD
View
Price last confirmed 19 days ago
B+
Retailer 17
-
$5,280 USD
View
Retailer 18
-
$5,573 USD
View
Price last confirmed 46 days ago
Retailer 19
-
$5,573 USD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
6551079188 · Oct 28
$6,090 USD
£4,795 GBP
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $2,406 USDSave up to $2,874 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
$2,406 USD