Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5556390031

Certificate GIA 5556390031

Diamond specifications and retailer prices

From $3,413 USD
As of October 28, 2026
Save $4,318 USD (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $8,032 USD at NZ Jewellers · As of September 10, 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 5556390031. Listed at 25 retailers as of October 27, 2026, with a 127% 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
FluorescenceStrong
Crown angle31.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5556390031
Dimensions7.03 × 7.07 × 4.32 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.03 mm7.07 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5556390031
Side View
Table 59.0%Crown 31.5°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.2%

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 28
Current: $7,731 USD|Low: $3,032 USD|High: $7,731 USD|Avg: $4,552 USD
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 28, 2026
Retailer 9$3,413 USD
Retailer 8$3,437 USD
Retailer 6$3,467 USD
Retailer 16$3,500 USD
Retailer 5$3,538 USD
Retailer 7$3,710 USD
Retailer 19$3,835 USD
Retailer 3$4,020 USD
Retailer 12$4,020 USD
Retailer 18$4,020 USD
Retailer 11$4,084 USD
Retailer 10$4,294 USD
Retailer 21$4,376 USD
Retailer 2$4,484 USD
Retailer 4$4,639 USD
Retailer 14$4,648 USD
Retailer 13$4,894 USD
Retailer 15$5,404 USD
Retailer 20$6,418 USD
Retailer 17$7,106 USD
NZ Jewellers$7,731 USD

36 data points across 21 retailers

25 retailers$3,413 USD to $7,731 USD

A
Cheapest Retailer
-
$3,413 USD
A
Retailer 2
-
$3,437 USD
View
A
Retailer 3
-
$3,467 USD
View
A
Retailer 4
-
$3,500 USD
View
A
Retailer 5
-
$3,538 USD
View
A
Retailer 6
-
$3,678 USD
A$5,658 AUD
View
A
Retailer 7
-
$3,710 USD
View
Final sale: no returns
A
Retailer 8
-
$3,835 USD
View
A
Retailer 9
-
$4,020 USD
View
A
Retailer 10
-
$4,020 USD
View
A
Retailer 11
-
$4,020 USD
View
A
Retailer 12
-
$4,084 USD
View
A
Retailer 13
-
$4,177 USD
View
Price last confirmed 47 days ago
A
Retailer 14
-
$4,294 USD
View
A
Retailer 15
-
$4,376 USD
View
A
Retailer 16
-
$4,484 USD
£3,531 GBP
View
A
Retailer 17
-
$4,639 USD
View
A
Retailer 18
-
$4,648 USD
A$7,151 AUD
View
Price last confirmed 19 days ago
A
Retailer 19
-
$4,819 USD
View
Price last confirmed 48 days ago
A
Retailer 20
-
$4,894 USD
€4,661 EUR
View
B+
Retailer 21
-
$5,404 USD
ZAR 87,297 ZAR
View
B+
Retailer 22
-
$6,418 USD
View
B+
Retailer 23
-
$7,106 USD
£5,595 GBP
View
Price last confirmed 11 days ago
B
Retailer 24
-
$7,731 USD
View
Most Expensive
B
NZ Jewellers
e517ba02-28b9-4889-ae77-714b4f2529f1 · Sep 10
$8,032 USD
View
Price last confirmed 48 days ago
24 more retailers have this diamond
Prices start from $3,413 USDSave up to $4,318 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
$3,413 USD