Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6552711170

Certificate GIA 6552711170

Diamond specifications and retailer prices

From $1,804 USD
As of November 4, 2026
Save $2,352 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,162 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552711170. 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

1.30
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552711170
Dimensions6.87 × 6.92 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.87 mm6.92 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552711170
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 62.9%

Caratlytics Score

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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: $2,254 USD|Low: $1,792 USD|High: $4,377 USD|Avg: $2,474 USD|-4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 2$1,804 USD
Retailer 8$1,876 USD
Retailer 15$1,890 USD
Retailer 5$1,946 USD
Retailer 9$1,950 USD
Retailer 12$1,970 USD
Retailer 16$1,975 USD
Retailer 4$1,997 USD
Retailer 1$2,254 USD
Retailer 3$2,297 USD
Retailer 6$2,450 USD
Retailer 7$2,459 USD
Retailer 10$2,546 USD
Retailer 11$2,744 USD
Retailer 13$2,876 USD
Retailer 14$4,156 USD

32 data points across 16 retailers

21 retailers$1,804 USD to $4,156 USD

A
Cheapest Retailer
-
$1,804 USD
Retailer 2
-
$1,876 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$1,890 USD
View
A
Retailer 4
-
$1,946 USD
View
A
Retailer 5
-
$1,950 USD
View
A
Retailer 6
-
$1,970 USD
View
Final sale: no returns
A
Retailer 7
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$1,975 USD
View
A
Retailer 8
-
$1,997 USD
View
A
Retailer 9
-
$2,254 USD
View
A
Retailer 10
-
$2,297 USD
View
Retailer 11
-
$2,379 USD
View
Price last confirmed 21 days ago
Retailer 12
-
$2,450 USD
View
Price last confirmed 21 days ago
Retailer 13
-
$2,459 USD
View
Price last confirmed 21 days ago
Retailer 14
-
$2,469 USD
View
Price last confirmed 29 days ago
Retailer 15
-
$2,489 USD
View
Price last confirmed 22 days ago
A
Retailer 16
-
$2,546 USD
View
B+
Retailer 17
-
$2,744 USD
View
Retailer 18
-
$2,745 USD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$2,876 USD
View
B
Retailer 20
-
$4,156 USD
View
Most Expensive
NZ Jewellers
6436d4c8-9028-4492-ac5c-9710bee4c788 · Oct 3
$5,162 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $1,804 USDSave up to $2,352 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
1.30ct Round
$1,804 USD