Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5556390031

Certificate GIA 5556390031

Diamond specifications and retailer prices

From HK$26,781 HKD
$3,413 USD
As of October 28, 2026
Save HK$33,880 HKD (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$63,022 HKD 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
Colour
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: HK$60,661 HKD|Low: HK$23,790 HKD|High: HK$60,661 HKD|Avg: HK$35,703 HKD
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 29, 2026
Retailer 9HK$26,781 HKD
Retailer 8HK$26,968 HKD
Retailer 6HK$27,203 HKD
Retailer 16HK$27,466 HKD
Retailer 5HK$27,761 HKD
Retailer 7HK$29,110 HKD
Retailer 19HK$30,091 HKD
Retailer 3HK$31,543 HKD
Retailer 12HK$31,543 HKD
Retailer 18HK$31,543 HKD
Retailer 11HK$32,045 HKD
Retailer 10HK$33,692 HKD
Retailer 21HK$34,336 HKD
Retailer 13HK$35,185 HKD
Retailer 4HK$36,399 HKD
Retailer 14HK$36,469 HKD
Retailer 2HK$38,714 HKD
Retailer 15HK$42,399 HKD
Retailer 20HK$50,357 HKD
Retailer 17HK$55,754 HKD
NZ JewellersHK$60,661 HKD

36 data points across 21 retailers

25 retailersHK$26,781 HKD to HK$60,661 HKD

A
Cheapest Retailer
-
HK$26,781 HKD
$3,413 USD
A
Retailer 2
-
HK$26,968 HKD
$3,437 USD
View
A
Retailer 3
-
HK$27,203 HKD
$3,467 USD
View
A
Retailer 4
-
HK$27,466 HKD
$3,500 USD
View
A
Retailer 5
-
HK$27,761 HKD
$3,538 USD
View
A
Retailer 6
-
HK$28,856 HKD
A$5,658 AUD
View
A
Retailer 7
-
HK$29,110 HKD
$3,710 USD
View
Final sale: no returns
A
Retailer 8
-
HK$30,091 HKD
$3,835 USD
View
A
Retailer 9
-
HK$31,543 HKD
$4,020 USD
View
A
Retailer 10
-
HK$31,543 HKD
$4,020 USD
View
A
Retailer 11
-
HK$31,543 HKD
$4,020 USD
View
Retailer 12
-
HK$32,045 HKD
$4,084 USD
View
Price last confirmed 7 days ago
Retailer 13
-
HK$32,774 HKD
$4,177 USD
View
Price last confirmed 49 days ago
A
Retailer 14
-
HK$33,692 HKD
$4,294 USD
View
A
Retailer 15
-
HK$34,336 HKD
$4,376 USD
View
A
Retailer 16
-
HK$35,185 HKD
£3,531 GBP
View
A
Retailer 17
-
HK$36,399 HKD
$4,639 USD
View
Retailer 18
-
HK$36,469 HKD
A$7,151 AUD
View
Price last confirmed 20 days ago
Retailer 19
-
HK$37,812 HKD
$4,819 USD
View
Price last confirmed 49 days ago
A
Retailer 20
-
HK$38,714 HKD
€4,699 EUR
View
B+
Retailer 21
-
HK$42,399 HKD
ZAR 87,297 ZAR
View
B+
Retailer 22
-
HK$50,357 HKD
$6,418 USD
View
Retailer 23
-
HK$55,754 HKD
£5,595 GBP
View
Price last confirmed 12 days ago
B
Retailer 24
-
HK$60,661 HKD
$7,731 USD
View
Most Expensive
NZ Jewellers
e517ba02-28b9-4889-ae77-714b4f2529f1 · Sep 10
HK$63,022 HKD
$8,032 USD
View
Price last confirmed 49 days ago
24 more retailers have this diamond
Prices start from HK$26,781 HKDSave up to HK$33,880 HKD

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
HK$26,781 HKD