CaratHunter
Plans
Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6552711170

Certificate GIA 6552711170

Diamond specifications and retailer prices

From $2,577 AUD
As of November 4, 2026
Save $3,360 AUD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,374 AUD 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
Colour
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

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 4
Current: $3,220 AUD|Low: $2,560 AUD|High: $6,253 AUD|Avg: $3,534 AUD|-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$2,577 AUD
Retailer 8$2,680 AUD
Retailer 15$2,700 AUD
Retailer 5$2,780 AUD
Retailer 9$2,786 AUD
Retailer 12$2,814 AUD
Retailer 16$2,821 AUD
Retailer 4$2,853 AUD
Retailer 1$3,220 AUD
Retailer 3$3,281 AUD
Retailer 6$3,500 AUD
Retailer 7$3,513 AUD
Retailer 10$3,637 AUD
Retailer 11$3,920 AUD
Retailer 13$4,108 AUD
Retailer 14$5,937 AUD

32 data points across 16 retailers

21 retailers$2,577 AUD to $5,937 AUD

A
Cheapest Retailer
-
$2,577 AUD
Retailer 2
-
$2,680 AUD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$2,700 AUD
View
A
Retailer 4
-
$2,780 AUD
View
A
Retailer 5
-
$2,786 AUD
View
A
Retailer 6
-
$2,814 AUD
View
Final sale: no returns
A
Retailer 7
-
$2,821 AUD
View
A
Retailer 8
-
$2,853 AUD
View
A
Retailer 9
-
$3,220 AUD
View
A
Retailer 10
-
$3,281 AUD
View
Retailer 11
-
$3,398 AUD
View
Price last confirmed 21 days ago
Retailer 12
-
$3,500 AUD
View
Price last confirmed 21 days ago
Retailer 13
-
$3,513 AUD
View
Price last confirmed 21 days ago
Retailer 14
-
$3,527 AUD
View
Price last confirmed 29 days ago
Retailer 15
-
$3,556 AUD
View
Price last confirmed 22 days ago
A
Retailer 16
-
$3,637 AUD
View
B+
Retailer 17
-
$3,920 AUD
View
Retailer 18
-
$3,921 AUD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$4,108 AUD
View
B
Retailer 20
-
$5,937 AUD
View
Most Expensive
NZ Jewellers
6436d4c8-9028-4492-ac5c-9710bee4c788 · Oct 3
$7,374 AUD
$5,162 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $2,577 AUDSave up to $3,360 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
1.30ct Round
$2,577 AUD