Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6545229748

Certificate GIA 6545229748

Diamond specifications and retailer prices

From $1,971 USD
As of November 6, 2026
Save $2,557 USD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,418 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545229748. Listed at 21 retailers as of November 4, 2026, with a 130% 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
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6545229748
Dimensions6.85 × 6.81 × 4.16 mm
L/W Ratio1.01
Top View
6.85 mm6.81 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545229748
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

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 6
Current: $2,042 USD|Low: $1,971 USD|High: $4,589 USD|Avg: $2,879 USD|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$1,971 USD
Retailer 1$2,042 USD
Retailer 9$2,296 USD
Retailer 3$2,480 USD
Retailer 5$2,726 USD
Retailer 4$2,738 USD
Retailer 6$3,035 USD
Retailer 8$3,163 USD
Retailer 7$3,210 USD
Retailer 10$4,528 USD

26 data points across 10 retailers

21 retailers$1,971 USD to $4,528 USD

A
Cheapest Retailer
-
$1,971 USD
A
Retailer 2
-
$2,042 USD
View
B+
Retailer 3
-
$2,296 USD
View
B+
Retailer 4
-
$2,424 USD
View
B+
Retailer 5
-
$2,438 USD
View
B+
Retailer 6
-
$2,440 USD
View
B+
Retailer 7
-
$2,480 USD
View
Retailer 8
-
$2,592 USD
View
Price last confirmed 39 days ago
Retailer 9
-
$2,592 USD
View
Price last confirmed 25 days ago
B+
Retailer 10
-
$2,650 USD
View
Retailer 11
-
$2,711 USD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$2,726 USD
View
B
Retailer 13
-
$2,732 USD
View
B
Retailer 14
-
$2,738 USD
View
Retailer 15
-
$2,990 USD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$3,035 USD
View
B
Retailer 17
-
$3,163 USD
View
B+
Retailer 18
-
$3,210 USD
View
B
Retailer 19
-
$4,528 USD
View
Retailer 20
-
$5,418 USD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
7345e70d-e7af-4eb5-af27-664b25f58f0f · Oct 3
$5,418 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $1,971 USDSave up to $2,557 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
$1,971 USD