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Round|Natural|GIA

1.20ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5566270858

Certificate GIA 5566270858

Diamond specifications and retailer prices

From $1,694 AUD
As of November 5, 2026
Save $1,512 AUD (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,206 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566270858. Listed at 8 retailers as of November 5, 2026, with prices from $1,694 to $3,206, a $1,512 spread on the same certified stone. Wholesale Diamonds Direct lists it at $3,206. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5566270858
Dimensions6.74 × 4.23 × 4.23 mm
L/W Ratio1.59
Culet sizeNone
Top View
6.74 mm4.23 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5566270858
Side View
Table 58.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,384 AUD|Low: $1,687 AUD|High: $4,719 AUD|Avg: $2,775 AUD|-12.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 6, 2026
Retailer 3$1,694 AUD
Retailer 5$1,977 AUD
Retailer 6$2,116 AUD
Retailer 1$2,384 AUD
Retailer 4$2,584 AUD
Retailer 7$2,668 AUD
Retailer 2$2,770 AUD
Wholesale Diamonds Direct$3,206 AUD

39 data points across 8 retailers

8 retailers$1,694 AUD to $3,206 AUD

A
Cheapest Retailer
-
$1,694 AUD
A
Retailer 2
-
$1,977 AUD
View
A
Retailer 3
-
$2,116 AUD
View
A
Retailer 4
-
$2,384 AUD
View
A
Retailer 5
-
$2,584 AUD
View
A
Retailer 6
-
$2,668 AUD
View
A
Retailer 7
-
$2,770 AUD
View
Most Expensive
B+
Wholesale Diamonds Direct
403843574 · Nov 6
$3,206 AUD
$2,244 USD
View
7 more retailers have this diamond
Prices start from $1,694 AUDSave up to $1,512 AUD

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
$1,694 AUD