Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1549993420

Certificate GIA 1549993420

Diamond specifications and retailer prices

From $1,817 USD
As of November 6, 2026
Save $2,361 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,051 USD at NZ Jewellers · As of September 28, 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 1549993420. 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 angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1549993420
Dimensions6.73 × 6.77 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Etch Channel, Crystal, Cloud, Needle
Top View
6.73 mm6.77 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549993420
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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: $1,886 USD|Low: $1,817 USD|High: $4,235 USD|Avg: $2,604 USD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$1,817 USD
Retailer 1$1,886 USD
Retailer 8$2,117 USD
Retailer 3$2,256 USD
Retailer 4$2,288 USD
Retailer 10$2,515 USD
Retailer 5$2,524 USD
Retailer 6$2,743 USD
Retailer 7$2,919 USD
Retailer 9$2,967 USD
Retailer 11$4,178 USD

26 data points across 11 retailers

21 retailers$1,817 USD to $4,178 USD

A
Cheapest Retailer
-
$1,817 USD
A
Retailer 2
-
$1,886 USD
View
A
Retailer 3
-
$2,117 USD
View
B+
Retailer 4
-
$2,256 USD
View
B+
Retailer 5
-
$2,267 USD
View
B+
Retailer 6
-
$2,270 USD
View
B+
Retailer 7
-
$2,288 USD
View
Retailer 8
-
$2,392 USD
View
Price last confirmed 25 days ago
Retailer 9
-
$2,392 USD
View
Price last confirmed 27 days ago
Retailer 10
-
$2,416 USD
View
Price last confirmed 39 days ago
B+
Retailer 11
-
$2,515 USD
View
B+
Retailer 12
-
$2,524 USD
View
Retailer 13
-
$2,528 USD
View
Price last confirmed 38 days ago
B+
Retailer 14
-
$2,531 USD
View
B+
Retailer 15
-
$2,743 USD
View
Retailer 16
-
$2,788 USD
View
Price last confirmed 38 days ago
B
Retailer 17
-
$2,919 USD
View
B+
Retailer 18
-
$2,967 USD
View
B
Retailer 19
-
$4,178 USD
View
Retailer 20
-
$5,000 USD
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
161a6c3e-d155-4bbf-a6ce-94c9247895ef · Sep 28
$5,051 USD
View
Price last confirmed 39 days ago
20 more retailers have this diamond
Prices start from $1,817 USDSave up to $2,361 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
$1,817 USD