Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6551678903

Certificate GIA 6551678903

Diamond specifications and retailer prices

From $3,315 USD
HK$25,900 HKD
As of October 29, 2026
Save $4,037 USD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,151 USD at NZ Jewellers · As of September 25, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551678903. Listed at 17 retailers as of October 29, 2026, with a 122% 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551678903
Dimensions6.98 × 6.93 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.98 mm6.93 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551678903
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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: Oct 29
Current: $7,352 USD|Low: $3,315 USD|High: $7,471 USD|Avg: $4,541 USD|-1.6%
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
Retailer 17
October 29, 2026
Retailer 16$3,315 USD
Retailer 14$3,552 USD
Retailer 9$3,595 USD
Retailer 15$3,701 USD
Retailer 11$3,823 USD
Retailer 17$3,839 USD
Retailer 3$3,955 USD
Retailer 4$3,970 USD
Retailer 6$4,038 USD
Retailer 10$4,245 USD
Retailer 2$4,403 USD
Retailer 8$4,672 USD
Retailer 7$5,042 USD
Retailer 12$5,591 USD
Retailer 5$5,860 USD
Retailer 13$6,827 USD
Retailer 1$7,352 USD

31 data points across 17 retailers

17 retailers$3,315 USD to $7,352 USD

A
Cheapest Retailer
-
$3,315 USD
HK$25,900 HKD
A
Retailer 2
-
$3,552 USD
View
Returns within 30 days
A
Retailer 3
-
$3,701 USD
View
Returns within 30 days
A
Retailer 4
-
$3,823 USD
€3,641 EUR
View
Returns within 14 days
A
Retailer 5
-
$3,839 USD
View
Final sale: no returns
A
Retailer 6
-
$3,955 USD
View
Returns within 40 days
A
Retailer 7
-
$3,970 USD
View
Returns within 30 days
A
Retailer 8
-
$4,038 USD
View
Returns within 30 days
A
Retailer 9
-
$4,245 USD
£3,342 GBP
View
Returns within 30 days
A
Retailer 10
-
$4,380 USD
A$6,738 AUD
View
A
Retailer 11
-
$4,403 USD
View
Price last confirmed 7 days ago
Returns within 30 days
A
Retailer 12
-
$4,672 USD
A$7,188 AUD
View
Price last confirmed 19 days ago
B+
Retailer 13
-
$5,591 USD
ZAR 90,324 ZAR
View
Returns within 7 days
B+
Retailer 14
-
$5,860 USD
View
Returns within 60 days
B+
Retailer 15
-
$6,827 USD
View
Returns within 3 days
B+
Retailer 16
-
$7,352 USD
£5,789 GBP
View
Most Expensive
B
NZ Jewellers
9a869dfd-3c5c-419e-899d-e93f71b54a19 · Sep 25
$8,151 USD
View
Price last confirmed 33 days ago
Returns within 30 days
16 more retailers have this diamond
Prices start from $3,315 USDSave up to $4,037 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
$3,315 USD